Requirement Specifications For Level-2 Parameters Required Stored or Derived by The Near Earth Asteroid Rendezvous (NEAR) Gamma-Ray Spectrometer (GRS) Ground System Irina Mikheeva (UA) and Tim McClanahan (GSFC) Revision 1.5: May 25, 2001 (This text version has a complete set of associated TIF files, one for each page of the original WORD document. Pointers inserted below identify the associated files that capture the figures, equations, or tables not shown in this file.) Table of Contents A. Introduction and Purpose..............................................1 B. The UA-LPL Ground Processing Environment..............................2 C. Description of NEAR GRS Data File Standards...........................3 D. Fractional Footprint Accounting.......................................4 E. Listings of Parameters for GRS Level-2 Integral Records...............5 E.1-E.7. NEAR GRS Spectra............................................5 E.8. NEAR GRS Science Housekeeping (SCI HK) Parameters...........5 E.9. NEAR GRS Engineering Housekeeping (ENG HK)Parameters........6 E.10. NEAR GRS Derived Engineering (DER ENG) Parameters..........10 E.11. NEAR GRS Spatial (SPATIAL) Parameters......................10 F. Listings of Parameters for GRS Level-2 Summary Record................11 F.1-F.7. NEAR GRS Summarized Spectra................................11 F.8. NEAR GRS Summarized Engineering (ENG)Parameters............11 F.9. NEAR GRS Summarized Spatial (SPATIAL) Parameters...........12 G. Listings of Parameters for GRS Fractional Footprint Accounting System............................................12 H. Numerical Specifications for GRS Level-2 Integral Records......................................................12 H.1-H.7. NEAR GRS Spectra...........................................12 H.8. NEAR GRS Science Housekeeping (SCI HK) Parameters..........13 H.9. NEAR GRS Engineering Housekeeping (ENG HK) Parameters......13 H.10. NEAR GRS Derived Engineering (DER ENG) Parameters..........13 H.11. NEAR GRS Spatial (SPATIAL) Parameters......................14 I. Numerical Specifications for GRS Level-2 Summary Record.......................................................22 I.1-I.7. NEAR GRS Summarized Spectra................................22 I.8. NEAR GRS Summarized Engineering (ENG) Parameters...........23 I.9. NEAR GRS Summarized Spatial (SPATIAL) Parameters...........24 J. Numerical Specifications for GRS Fractional Footprint Accounting System.......................................................27 APPENDIX 1. Definitions for: Instr_Angular_Response_Fct_YYMeV (where YY can be 0.3, 0.6, 1.0, 3.0 or 6.0); NC_Angular_Fct; NC_Geom_Weight_YYMeV; NC_Weight_YYMeV; NR_Geom_Weight_YYMeV; NR_Weight_YYMeV......................30 APPENDIX 2. Approximations for: Instr_Angular_Response_Fct_YYMeV, (where YY can be 0.3, 0.6, 1.0, 3.0 or 6.0); NC_Angular_Fct.............................................32 APPENDIX 3 Location of GRS Level-2 Parameters in the U of A Database.................................................36 NEAR GRS Requirements Specs Revision Notes...................................4 NEAR GRS Glossary and Acronym List...........................................4 A. Introduction and Purpose The following document will act as one part of a two part requirement specification for all Level-2 parameters required to be stored or derived by the Near Earth Asteroid Rendezvous (NEAR) X-ray and Gamma-Ray spectrometer ground system (XGRS). It will relate specifically to the Gamma-Ray spectrometer (GRS) requirements. The document will act as a primary common reference for both NEAR X-ray and Gamma-ray spectrometer (XGRS) science team members, systems development staff and future users of these data. The goal is to assist in the development and understanding of parameters defined as key to the NEAR XGRS Science objectives. A primary data server residing at the University of Arizona, Lunar and Planetary Laboratory (UA-LPL) is designated with the function of deriving and serving mission critical parameters during cruise and encounter phases of the NEAR mission scheduled from February 1996 through February 2001. The intent of the first level product is to include all NEAR XGRS mission critical information needed for asteroid mapping, health of instrument, control, and science analysis systems. Level-1 products will include integral spectral data in either raw or instrument calibrated format. Bundled with the spectral data products will be scientific housekeeping and engineering housekeeping data sampled by the XGRS instrumentation at the same time as the integral spectra onboard the spacecraft. This information is then telemetered through NASA's Deep Network (DSN) managed by the Jet Propulsion Laboratory in Pasadena, California, and NEAR related telemetry is forwarded to the Applied Physics Laboratory (APL). The Level-0 XGRS raw spectral and engineering data is then broken out of the NEAR mission specific data stream and stored online at the APL Science Data Center (SDC). These data are stored in the Hierarchical Data Format (HDF) file standard. These files are then picked up by the automated (UA-LPL) data processing ingest system. Figure 1.0 NEAR XGRS OPERATIONAL FLOW OF INFORMATION (See file GRS_REQS_7_2_003.TIF for the figure) B. The UA-LPL Ground Processing Environment The core of the UA-LPL data processing system (Figure 2.0) consists of a Sybase Relational Database (UA-RDBMS) that stores tables of NEAR XGRS raw spectral, science housekeeping, engineering housekeeping, derived engineering and spatial data products. XRS and GRS data processing systems are logically partitioned into separate processing environments on the UA-LPL server. A scientific data processing system has been developed around the UA-RDBMS to provide automated data ingest and science team interaction. Critical spatial and derived engineering data products are generated either at ingest time or query time. Core query time processing options include calibration and summation processing, compression and bundling of query results for return to the scientific user community over the Internet file transfer protocol (FTP). Figure 2.0 NEAR XGRS Ground Processing System at the UA-LPL (See file GRS_REQS_7_2_004.TIF for the figure) UA-LPL database ingest systems automatically monitor the APL SDC for new and updated postings of XGRS data sets. These file sets are recovered via the file transfer protocol (FTP) to the UA-LPL data system. Raw spectral and engineering data products are then loaded into XGRS RDBMS tables with Mission Elapsed Time (MET) acting as the primary key for database access. Mission Elapsed Time is used with spacecraft ephemeris data SPICE system, APL Science Data Center and JPL/NASA Ancillary Information Facility) to derive spatial data products. Spacecraft navigation and pointing information is converted to SPICE data for the NEAR XGRS ground system and will be generated by participating scientists at APL/SDC. These products will then be maintained within the UA-RDBMS database system. At Goddard Space Flight Center participating scientists will be charged with monitoring instrument health, calibration, and bad data flagging systems. These data are then forwarded to on-line ingest processes at the UA-RDBMS. The calibration system will be used to convert spectral data products to a common energy standard specified at query time. Calibration processing is optionally selected at query time. Bad flagging information is generated during instrument health checks as a function of identification of problem (MET) record sets. These (MET)'s are forwarded to the UA-LPL RDBMS for tagging. Query time summation processes will be used to sum multiple integral record sets into a single output record. This record will include one spectrum per spectral classification and selected engineering products. Summed output will generally be specific to regional coverage and science analysis. The primary motivation for summation processing is to limit large volume network transfers incurred in this distributed processing environment. Results are then accumulated in the Xternal Data Representation (XDR) binary file standard (Sun Microsystems) then compressed, bundled and forwarded to the query initiator. C. Description of NEAR GRS Data File Standards In the NEAR GRS data processing system there are 3 data file standards possible for output. These different file standards reflect the different UA-LPL ground processes selectable at query time. Output format type is selected at query time through the UA-LPL WWW query interface. Integral raw GRS products will be used primarily in the calibration, instrument health and mission planning activities. Calibrated data will be used primarily in the science analysis activity. Formats for the three record standards are as follows. Figure 3a FORMAT 1: GRS Integral Raw: (See file GRS_REQS_7_2_005.TIF for the figure) Figure 3b FORMAT 2: GRS Integral Calibrated: (See file GRS_REQS_7_2_005.TIF for the figure) Nomenclature for GRS integral data products: FORMATS 1 and 2 (Calibrated and Raw) g(yyyy)(ddd)(hh)(mm)(ss).xdr Example: g1998234010159.xdr NEAR GRS Summation Processing: (Format 3) The NEAR XGRS data processing ground system is a distributed system that currently spans institutions in the United States and Europe. The summation processing system has been specified to render the possibly very large volumes of data (> Gbytes) returned from a single query down to a single summary record. The intention of summation processing will be to minimize the per query network data transfer size (bytes), by rendering a single summed spectrum from a relationally defined set. Correlated parameters will be bundled with this summed set. The summation ground processing step will be supported only on calibrated spectral data products. Figure 3c FORMAT 3: GRS Summed: (See file GRS_REQS_7_2_006.TIF for the figure) Nomenclature for GRS integral data products: FORMATS 3 (Summed) h(yyyy)(ddd)(hh)(mm)(ss).xdr Example: h1998234010159.xdr Summation processing will be query specific and all derived engineering tracking is done internal to each query process. All (XDR) file sets returned from the query will be run through the summation processing system. Integral calibrated spectra will be summed into single GRS specific output sets. Selected engineering and spatial parameters are also averaged into values representative of the parameter over the range of output (MET) records and specific to each query. Parameter rendering algorithms are listed in the numerical specifications (Section I). D. Fractional Footprint Accounting The 433Eros asteroid is highly irregular in shape and deviates significantly from a spherical geometry. A system was developed by NEAR XGRS staff to partition a virtual representation of the 433Eros asteroid into surface regions (bins) of roughly equal surface area, not based on spherical geometry. The bin system is internal to the UA-RDBMS ground processing system. Individual spectral accumulations will most likely span multiple asteroid surface bins. This system will be used to discriminate and identify the applicability of integral footprints, based on their fractional coverage of the asteroid surface bin being queried. During UA-RDBMS ingest processing each integral footprint will be broken down into a set of records, one bin record for each bin subtended by the footprint. The current plan does not include the possibility of using the fractional footprint as a weighting function when automatically summing spectral data at query time. The fractional footprint accounting will be used as a query time threshold criteria for inclusion of the integral MET to summation processing. Figure 4.0 Fractional Footprint (See file GRS_REQS_7_2_007.TIF for the figure) A query time specification requesting all integrations (MET records) from Bin C with a fractional footprint area >= 0.4 would return the example integration and others whose fractional coverage are at least 0.4. Information related to the bin processing is included in sections G and J. E. Listings of Parameters for GRS level-2 Integral Records FORMATS 1,2 - List of RDBMS parameters for Single Raw and Calibrated GRS Level-2 record (output) E.1. - E.7. NEAR GRS Spectra: 4 spectra*1024 channels*(Real*4), 1 spectrum*21 channels(Real*4), 1 spectrum*1024 channels*(Real*4), 1 spectrum*21 channels(Real*4) 0 - 1023 Sodium Iodide (NAI) spectrum 0 - 1023 Bismuth Germanate (BGO) spectrum 0 - 1023 Anti-Coincidence (ANTICO) spectrum 0 - 1023 Sodium Iodide (NAI1ESC) single escape spectrum 0 - 20 Bismuth Germanate (BGO1ESC) single escape spectrum 0 - 1023 Sodium Iodide (NAI2ESC) double escape spectrum 0 - 20 Bismuth Germanate (BGO2ESC) double escape spectrum E.8. NEAR GRS Science Housekeeping (SCI HK) Parameters: 31*(Integer*4) The following parameters are described in detail in the NEAR XGRS DPU Software Requirements Specification JHU/APL Version 7 7358-9002. Version 7 of the software was uploaded in May 1999. 0 MET 1 UTC 2 DQI * Data Quality Index 3 TIME_TAG 4 INTEGRATION_TIME 5 BGO_PROTON_FLARE_FLG 6 BGO_LEVEL_1_SAFE_FLG Version 7 7 BGO_LEVEL_2_SAFE_FLG 8 NAI_LEVEL_1_SAFE_FLG 9 NAI_LEVEL_2_SAFE_FLG 10 NAI_INT_OVERFLOW_FLG 11 BGO_INT_OVERFLOW_FLG 12 NAI_ANTICOINCID_OVFL_FLG 13 NAI_SINGLE_ESCP_OVFL_FLG 14 NAI_DOUBLE_ESCP_OVFL_FLG 15 BGO_SINGLE_ESCP_OVFL_FLG 16 BGO_DOUBLE_ESCP_OVFL_FLG 17 NAI_RAW_EVENT_RATE 18 BGO_RAW_EVENT_RATE 19 COINCIDENCE_COUNTER Version 7 20 COMMAND_COUNTER Version 7 21 PROBLEM_COUNTER Version 7 22 PROBLEM_CODE Version 7 23 NUM_NAI_ANTICOINCID_EVENTS 24 NUM_NAI_VALID_EVENTS 25 NUM_BGO_VALID_EVENTS 26 NAI_DC_OFFSET Downlinked value. No conversion to energy bins is performed. (no division by 2 as required by NEAR XFRS DPU Software Requirements Specifications JHU/APL 7358-9002 Version 7) 27 BGO_DC_OFFSET - " - 28 NAI_STAND_DEV - " - 29 BGO_STAND_DEV - " - 30 GRAY_DATA_QUALITY_BIT Version 7 E.9. NEAR GRS Engineering Housekeeping (ENG HK) Parameters: 152*(REAL*4) The following parameters are described in detail in the NEAR XGRS DPU Software Requirements Specification JHU/APL Version 7 7358-9002. Version 7 of the software was uploaded in May 1999. ENG_HK Parameters 0:137 are common to XRS and GRS. Parameters are sampled at XRS and GRS Resolutions. 0 DETECTOR_ELECTR_CURR 1 XRAY_PIN_DIODE_FET_BIAS 2 HVCE_TEMPERATURE 3 UNF_XRAY_HVPS_VOLT 4 MG_XRAY_HVPS_VOLT 5 AL_XRAY_HVPS_VOLT 6 XRAY_GAS_HVPS_VOLT 7 XRAY_PIN_HVPS_VOLT 8 NAI_HVPS_VOLT 9 BGO_HVPS_VOLT 10 DPU_DC_DC_TEMP 11 XGRS_DC_DC_TEMP 12 UNF_XRAY_HVPS_TEMP 13 MG_XRAY_HVPS_TEMP 14 AL_XRAY_HVPS_TEMP 15 XRAY_GAS_HVPS_TEMP 16 XRAY_PIN_HVPS_TEMP 17 NAI_HVPS_TEMP 18 BGO_HVPS_TEMP 19 TEC_CURRENT 20 NAI_HVPS_VOLT_CMD 21 BGO_HVPS_VOLT_CMD 22 UNF_HVPS_VOLT_CMD 23 MG_HVPS_VOLT_CMD 24 AL_HVPS_VOLT_CMD 25 HVPS_POWER_ON_OFF 26 XRAY_CALIB_HOME_FLG 27 XRAY_CALIB_MOTOR_ON_OFF 28 XRAY_CALIB_MOTOR_ENABLE 29 GAS_HVPS_VOLT_CMD 30 PIN_HVPS_VOLT_CMD 31 GAMMA_RAY_HEATER_CURR 32 spare0 33 XRAY_CALIB_MOTOR_DIR 34 XRAY_CALIB_MOTOR_CURR 35 XRAY_CALIB_MOTOR_GOAL 36 XRAY_CALIB_MOTOR_POS 37 XRAY_CALIB_MOTOR_FID_SENS 38 XRAY_CALIB_MOTOR_FID_BRIT 39 XRAY_MOTOR_IN_CALIB_POSITION 40 XRAY_MOTOR_IN_NORM_POSITION 41 ACTIVE_SOLAR_TOGGLE_MODE 42 XRAY_CALIB_MAX_STEPS 43 Spare 44 TEC_ENABLE 45 XRAY_CALIB_CUM_MOTOR_STPS 46 GRAY_BURST_THRESH_VAL 47 XRAY_SAFING_THRESH 48 XRAY_CALIB_MOTOR_DIAG 49 TEC_POWER_ON_OFF 50 TEC_MODE 51 TEC_COOL_HEAT_FLG 52 TEC_TEMPERATURE 53 TEC_COOL_MODE_TEMP_UP_LMT 54 TEC_COOL_MODE_TEMP_LOW_LMT 55 TEC_HEAT_MODE_TEMP_UP_LMT 56 TEC_HEAT_MODE_TEMP_LOW_LMT 57 GAMMA_RAY_TEMP_HYSTERESIS 58 GAMMA_RAY_HEAT_TEMP_LOW_LMT 59 FULL_GAMMA_RAY_SCIENCE_MODE 60 FULL_XRAY_SCIENCE_MODE 61 SUMM_GRAY_XRAY_SCIENCE_MODE 62 GRAY_BURST_SCI_REC_MODE 63 HVCE_TEMP_SET_POINT 64 CMDED_END_XRAY_INTEG_PER 65 CMDED_GAMMA_RAY_INTEG_PER 66 BGO_PROTON_FLARE_FLG 67 GAMMA_RAY_BIN_OVER_FLG_CMD 68 UNF_XRAY_BIN_OVER_FLG_CMD 69 MG_BIN_OVER_FLG_CMD 70 AL_BIN_OVER_FLG_CMD 71 ACT_BIN_OVER_FLG_CMD 72 NAI_BIN_OVERFLOW_FLG 73 BGO_BIN_OVERFLOW_FLG 74 NAI_ANTICOIN_OVERFLOW_FLG 75 NAI_SING_ESC_OVERFLOW_FLG 76 NAI_DOUB_ESC_OVERFLOW_FLG 77 BGO_SING_ESC_OVERFLOW_FLG 78 BGO_DOUB_ESC_OVERFLOW_FLG 79 UNF_XRAY_BIN_OVERFLOW_FLG 80 MG_BIN_OVERFLOW_FLG 81 AL_BIN_OVERFLOW_FLG 82 ACT_BIN_OVERFLOW_FLG 83 GAMMA_RAY_HEAT_ON_OFF 84 GAMMA_RAY_HEAT_MODE 85 BGO_LEVEL_1_SAFING_FLG 86 BGO_LEVEL_2_SAFING_FLG 87 Spare 88 XRAY_INTEGR_TIME 89 HVPS_ON_OFF 90 PIN_SENSOR_MASK_FLG 91 GAS_SENSOR_MASK_FLG 92 AL_SENSOR_MASK_FLG 93 MG_SENSOR_MASK_FLG 94 UNF_SENSOR_MASK_FLG 95 BGO_SENSOR_MASK_FLG 96 NAI_SENSOR_MASK_FLG 97 UNF_XRAY_RISE_TIME_THRESH 98 MG_RISE_TIME_THRESH 99 AL_RISE_TIME_THRESH 100 GAS_RISE_TIME_THRESH 101 UNF_RISE_TIME_VALID_THRESH Downlinked value. No ground conversion specified in NEAR XFRS DPU Software Requirements Specifications JHU/APL 7358-9002 Version 7 is performed. 102 MG_RISE_TIME_VALID_THRESH - " - 103 AL_RISE_TIME_VALID_THRESH - " - 104 GAS_RISE_TIME_VALID_THRESH - " - 105 GAMMA_RAY_INTEGR_TIME 106 GAMMA_SING_ESC_WIND_CENTER - " - 107 GAMMA_SING_ESC_WIND_WIDTH 108 GAMMA_DOUB_ESC_WIND_CENTER - " - 109 GAMMA_DOUB_ESC_WIND_WIDTH 110 NAI_LOW_LEVEL_AMPL_THRESH Ground conversion is: (downlinked value * 3.413 + 3.0), which is different from specified in NEAR XFRS DPU Software Requirements Specifications JHU/APL 7358-9002 Version 7 111 BGO_LOW_LEVEL_AMPL_THRESH - " - 112 UNF_LOW_LEVEL_AMPL_THRESH 113 MG_LOW_LEVEL_AMPL_THRESH 114 AL_LOW_LEVEL_AMPL_THRESH 115 GAS_LOW_LEVEL_AMPL_THRESH 116 PIN_LOW_LEVEL_AMPL_THRESH 117 GAMMA_RAY_SENSOR_TEMP 118 NAI_LEVEL_1_SAFING_FLG 119 UNF_LEVEL_1_SAFING_FLG 120 MG_LEVEL_1_SAFING_FLG 121 AL_LEVEL_1_SAFING_FLG 122 GAS_LEVEL_1_SAFING_FLG 123 PIN_LEVEL_1_SAFING_FLG 124 NAI_LEVEL_2_SAFING_FLG 125 UNF_LEVEL_2_SAFING_FLG 126 MG_LEVEL_2_SAFING_FLG 127 AL_LEVEL_2_SAFING_FLG 128 GAS_LEVEL_2_SAFING_FLG 129 PIN_LEVEL_2_SAFING_FLG 130 XRAY_SENS_SAFING_REST_LEVEL 131 GAMMA_SENS_SAFING_REST_LEVEL 132 XRAY_SAFING_REST_MAX_RETRY 133 GAMMA_SAFING_REST_MAX_RETRY 134 GAMMA_HEATER_DUTY_CYCLE 135 GAMMA_SENS_SAFING_THRESH 136 HVPS_CURRENT 137 BGO_PROTON_FLARE_THRESH 138 VERSION_NUMBER Version 7 139 NAI_SPECTRUM_0 Version 7 140 HW_NAI_RAW Version 7 141 NAI_HIGH_ENERGY Version 7 142 BGO_SPECTRUM_0 Version 7 143 HW_BG Version 7 144 BGO_HIGH_ENERGY Version 7 145 NAI_ANTICOIN_SPECTRUM_0 Version 7 146 HW_NAI_ANTICOIN Version 7 147 NAI_ANTICOIN_HIGH_ENERGY Version 7 148 SINGLE_ESC_SPECTRUM_0 Version 7 149 SINGLE_ESC_HIGH_ENERGY Version 7 150 DOUBLE_ESC_SPECTRUM_0 Version 7 151 DOUBLE_ESC_HIGH_ENERGY Version 7 E.10. NEAR GRS Derived Engineering (DER ENG) Parameters: 17*(Real*4), 1*(Integer*4), 1*(4*Integer*4) These parameters are not stored in the University of Arizona RDBMS but derived at a query time. "Not valid" - is designated as = -1 0 GAIN_STANDARD_BGO Not valid if not calibrated 1 GAIN_STANDARD_NAI Not valid if not calibrated 2 ZERO_STANDARD_BGO Not valid if not calibrated 3 ZERO_STANDARD_NAI Not valid if not calibrated 4 REAL_GAIN_BGO 5 REAL_GAIN_NAI 6 REAL_ZERO_BGO 7 REAL_ZERO_NAI 8 LIVE_TIME_BGO 9 LIVE_TIME_NAI 10 BGO_VALID_CHANNEL_HI Not valid if not calibrated 11 NAI_VALID_CHANNEL_HI Not valid if not calibrated 12 BGO_VALID_CHANNEL_LOW Not valid if not calibrated 13 NAI_VALID_CHANNEL_LOW Not valid if not calibrated 14 Pos_ESC_1 15 Pos_ESC_2 16 GCR_FLUX 17 Bad_Flag 18 Query_ID E.11. NEAR GRS Spatial (SPATIAL) Parameters: 1*(Integer*4), 32*(Real*4) These parameters are derived in the University of Arizona at the ingest phase. "Not valid" - is designated as = -1 0 MET 1 PLATEID_BORESITE_INTERSECT NOT VALID IF FOV_STATUS=0 2 BINID_BORESIGHT_INTERSECT NOT VALID IF FOV_STATUS=0 3 SC_POSITION, X 4 SC_POSITION, Y 5 SC_POSITION, Z 6 BS_VECTOR, X 7 BS_VECTOR, Y 8 BS_VECTOR, Z 9 FOV_STATUS 10 DOWNLINK_STATUS 11 AVERAGE_SC_DISTANCE NOT VALID IF FOV_STATUS=0 12 AVERAGE_EMISSION_ANGLE NOT VALID IF FOV_STATUS=0 13 TOTAL_EFF_SOLID_ANGLE =0 IF FOV_STATUS=0 14 TOTAL_AREA_FOOTPRINT NOT VALID 15 TOTAL_VISIBLE_AREA =0 IF FOV_STATUS=0 16 NC_WEIGHT_0.3MEV =0 IF FOV_STATUS=0 17 NR_WEIGHT_0.6MEV =0 IF FOV_STATUS=0 18 NC_WEIGHT_0.6MEV =0 IF FOV_STATUS=0 19 NR_WEIGHT_1.0MEV =0 IF FOV_STATUS=0 20 NC_WEIGHT_1.0MEV =0 IF FOV_STATUS=0 21 NR_WEIGHT_3.0MEV =0 IF FOV_STATUS=0 22 NC_WEIGHT_3.0MEV =0 IF FOV_STATUS=0 23 NC_WEIGHT_6.0MEV =0 IF FOV_STATUS=0 24 BORESIGHT_INTERSECT_LAT NOT VALID IF FOV STATUS = 0 25 BORESIGHT_INTERSECT_LON NOT VALID IF FOV STATUS = 0 26 BORESIGHT_INTERSECT_R NOT VALID IF FOV STATUS = 0 27 SPICE_KERNEL_ID 28 PLATE_MODEL_ID 29 PROCESSING_SOFTWARE_ID 30 DATABASE_VERSION_ID F. Listings of Parameters for GRS Level-2 Summary Record FORMAT 3 - List of RDBMS parameters for Summarized GRS Level-2 record (output) F.1. - F.7. NEAR GRS Summarized Spectra: 4 spectra*1024 channels*(Real*4), 1 spectrum*21 channels(Real*4), 1 spectrum*1024 channels*(Real*4), 1 spectrum*21 channels(Real*4) 0 - 1023 Sodium Iodide (NAI) spectrum 0 - 1023 Bismuth Germanate (BGO) spectrum 0 - 1023 Anti-Coincidence (ANTICO) spectrum 0 - 1023 Sodium Iodide (NAI1ESC) single escape spectrum 0 - 20 Bismuth Germanate (BGO1ESC) single escape spectrum 0 - 1023 Sodium Iodide (NAI2ESC) double escape spectrum 0 - 20 Bismuth Germanate (BGO2ESC) double escape spectrum F.8. NEAR GRS Summarized Engineering (ENG) Parameters: 13*(Real*4) 0 GAIN_STANDARD_BGO 1 GAIN_STANDARD_NAI 2 ZERO_STANDARD_BGO 3 ZERO_STANDARD_NAI 4 TOTAL_INTEG_TIME 5 TOTAL_LIVE_TIME_BGO 6 TOTAL_LIVE_TIME_NAI 7 BGO_VALID_CHANNEL_HI 8 NAI_VALID_CHANNEL_HI 9 BGO_VALID_CHANNEL_LOW 10 NAI_VALID_CHANNEL_LOW 11 AVG_GCR_FLUX 12 NUMBER_MET F.9. NEAR GRS Summarized Spatial (SPATIAL) Parameters: 13*(Real*4) "Not valid" - is designated as = -1 0 AVG_SC_DISTANCE NOT VALID IF FOV_STATUS=0 1 AVG_EMI_ANGLE NOT VALID IF FOV_STATUS=0 2 AVG_TOTAL_EFF_SOLID_ANGLE =0 IF FOV_STATUS=0 3 NR_WEIGHT_0.3MEV =0 IF FOV_STATUS=0 4 NC_WEIGHT_0.3MEV =0 IF FOV_STATUS=0 5 NR_WEIGHT_0.6MEV =0 IF FOV_STATUS=0 6 NC_WEIGHT_0.6MEV =0 IF FOV_STATUS=0 7 NR_WEIGHT_1.0MEV =0 IF FOV_STATUS=0 8 NC_WEIGHT_1.0MEV =0 IF FOV_STATUS=0 9 NR_WEIGHT_3.0MEV =0 IF FOV_STATUS=0 10 NC_WEIGHT_3.0MEV =0 IF FOV_STATUS=0 11 NC_WEIGHT_6.0MEV =0 IF FOV_STATUS=0 12 ESTIMATED_COVERED_AREA =0 IF FOV_STATUS=0 G. Listing of Parameters for GRS Fractional Footprint Accounting System Internal to the University of Arizona RDBMS information for accounting purposes only. This information will not be output at the query time. 0 MET INTEGER*4 1 FOOTPRINT_BIN_TOTAL_AREA REAL*4 NOT VALID 2 FOOTPRINT_BIN_VISIBLE_AREA REAL*4 3 TOTAL_EFF_SOLID_ANGLE_FRACTION REAL*4 4 NR_SPECTRUM_FRACTION REAL*4 5 NC_SPECTRUM_FRACTION REAL*4 6 BINID REAL*4 H. Numerical Specifications for GRS level-2 Integral Records FORMATS 1,2 - Numerical specifications for Single Raw and Calibrated GRS Level-2 record (output) H.1. - H.7. NEAR GRS Spectra: 4 spectra*1024 channels*(Real*4), 1 spectrum*21 channels(Real*4), 1 spectrum*1024 channels*(Real*4), 1 spectrum*21 channels(Real*4) The following parameters are described in detail in the NEAR XGRS DPU Software Requirements Specification JHU/APL Version 7 7358-9002. Version 7 of the software was uploaded in May 1999. H.8. NEAR GRS Science Housekeeping (SCI HK) Parameters: 31*(Integer*4) The following parameters are described in detail in the NEAR XGRS DPU Software Requirements Specification JHU/APL Version 7 7358-9002. Version 7 of the software was uploaded in May 1999. H.9. NEAR GRS Engineering Housekeeping (ENG HK) Parameters: 152*(REAL*4) The following parameters are described in detail in the NEAR XGRS DPU Software Requirements Specification JHU/APL Version 7 7358-9002. Version 7 of the software was uploaded in May 1999. H.10. NEAR GRS Derived Engineering (DER ENG) Parameters: 17*(Real*4), 1*(Integer*4), 1*(4*Integer*4) PARAMETER NAME UNITS 0 GAIN_STANDARD_BGO keV/channel User specified of default 1 GAIN_STANDARD_NAI keV/channel - " - 2 ZERO_STANDARD_BGO keV - " - 3 ZERO_STANDARD_NAI keV - " - 4 REAL_GAIN_BGO keV/channel a1+a2*x+a3*x^2+a4*x^3+..., where x is day since launch, a1..an are derived coefficients, provided by GSFC. 5 REAL_GAIN_NAI keV/channel - " - 6 REAL_ZERO_BGO keV - " - 7 REAL_ZERO_NAI keV - " - 8 LIVE_TIME_BGO Unitless LIVE_TIME_BGO = NUM_BGO_VALID_EVENTS(SCI_HK:25)/(BGO_RAW_EVENT_RATE(SCI_HK:18) - 0.5*BGO_HIGH_ENERGY(ENG_HK:144)) 9 LIVE_TIME_NAI Unitless LIVE_TIME_NAI = NUM_NAI_VALID_EVENTS(SCI_HK:24) / (NAI_RAW_EVENT_RATE(SCI_HK:17) - 0.2*NAI_HIGH_ENERGY(ENG_HK:141)) 10 BGO_VALID_CHANNEL_HI Channel Highest channel of the spectrum in new (after calibration) energy scale. =N(1021), if N(1021)<=1023 =1023, if N(1021)>1023, N(1021): channel number in the new energy scale, corresponding to 1021 channel of the original spectrum. (See file GRS_REQS_7_2_015.TIF for the equation) 11 NAI_VALID_CHANNEL_HI Channel - " - 12 BGO_VALID_CHANNEL_LOW Channel Lowest channel of the spectrum in new (after calibration) energy scale. =N(LLD), if N(LLD)>=0 =0, if N(LLD)<0, N(LLD): channel number in the new energy scale, corresponding to low level discriminator setting of the original spectrum N(LLD_0)= BGO_LOW_LEVEL_AMPL_ THRESH (Eng_HK:111) or 10, whatever is higher. 13 NAI_VALID_CHANNEL_LOW Channel - " - N(LLD_0)= NAI_LOW_LEVEL_AMPL_ THRESH (Eng_HK:110) 14 Pos_ESC_1 keV Energy, corresponding to the middle of 1-st escape window (Eng_HK:106) (See file GRS_REQS_7_2_016.TIF for the equation) 15 Pos_ESC_2 keV Energy, corresponding to the middle of 2-nd escape window (Eng_HK:108) 16 GCR_Flux Counts/Seconds Parameter reflects changes in galactic cosmic ray flux. Updated after calibration (See file GRS_REQS_7_2_016.TIF for the equation) 17 Bad_Flag 18 Query_ID H.11. NEAR GRS Spatial (SPATIAL) Parameters: 1*(Integer*4), 32*(Real*4) All spatial derivations, unless specified differently, are made for the middle of integration period. * ET - ephemeris time corresponding to clock fixed Mission Elapsed Time in the middle of the integration period. Measuring units are seconds before January 1, 2000. PARAMETER NAME UNITS 0 MET Seconds Mission Elapsed Time at start of integration 1 PlateID_Boresite_Intersect Plate Index ID of the plate that boresight intersects in the middle of integration period 2 BinID_Boresite_Intersect Bin Index ID of the plate that boresight intersects in the middle of integration period 3 SC_Position, X Coord X, km Position of spacecraft 4 SC_Position, Y Coord Y, km (ET*) in Eros fixed 5 SC_Position, Z Coord Z, km coord. system (ET*) 6 BS_Vector, X Vector X, normal Boresight vector of GRS 7 BS_Vector, Y Vector Y, normal (ET*) in Eros fixed 8 BS_Vector, Z Vector Z, normal coord. system (ET*) 9 FOV_Status Status value = 0: Field of view (FOV) is completely off the asteroid (if there are no plates in the field of view). = 1: Field of view is on the asteroid (totally or partially). 10 Downlink_Status Status Value = 0: No downlink = 1: Yes downlink (The angle between antenna direction and vector spacecraft(ET*) Earth(ET*) is less than 2 degrees) 11 Average_SC_Distance Kilometers Average distance from the spacecraft to the surface of the asteroid in the middle of integration period. (See file GRS_REQS_7_2_017.TIF for the equation) 12 Avg_Emission_Angle Degrees Average emission angle (See file GRS_REQS_7_2_018.TIF for the equation) 13 Total_Eff_Solid_Angle Steradians Overall solid angle of all plates in the footprint weighted by the instrument angular response function for the 1 MeV radiation. (See file GRS_REQS_7_2_018.TIF for the equation) 14 Total_Area_Footprint Sq. Kilometers NOT VALID 15 Total_Visible_Area Sq. Kilometers Total area of plates in the footprint visible from the spacecraft (See file GRS_REQS_7_2_018.TIF for the equation) 16 Footprint_Solid_Angle Steradians Overall solid angle of all plates in the footprint as seen from the spacecraft. (See file GRS_REQS_7_2_018.TIF for the equation) 17 NR_Geom_Weight_0.3MeV Steradians Normalization coefficient. It relates the gamma-ray flux at the detector and the intensity of gamma-ray radiation from the asteroid surface in the direction normal to the surface (for 0.3 MeV natural radioactivity radiation). For complete definition see Appendix 1. (See file GRS_REQS_7_2_019.TIF for the equation) 18 NC_Geom_Weight_0.3MeV Steradians Normalization coefficient. It relates the gamma-ray flux at the detector and the intensity of gamma-ray radiation from the asteroid surface in the direction normal to the surface (for 0.3 MeV non-elastic scattering and thermal neutron capture radiation). For complete definition see Appendix 1. (See file GRS_REQS_7_2_019.TIF for the equation) 19 NR_Geom_Weight_0.6MeV Steradians Normalization coefficient. It relates the gamma-ray flux at the detector and the intensity of gamma-ray radiation from the asteroid surface in the direction normal to the surface (for 0.6 MeV natural radioactivity radiation). For complete definition see Appendix 1. (See file GRS_REQS_7_2_020.TIF for the equation) 20 NC_Geom_Weight_0.6MeV Steradians Normalization coefficient. It relates the gamma-ray flux at the detector and the intensity of gamma-ray radiation from the asteroid surface in the direction normal to the surface (for 0.6 MeV non-elastic scattering and thermal neutron capture radiation). For complete definition see Appendix 1. (See file GRS_REQS_7_2_020.TIF for the equation) 21 NR_Geom_Weight_1.0MeV Steradians Normalization coefficient. It relates the gamma-ray flux at the detector and the intensity of gamma-ray radiation from the asteroid surface in the direction normal to the surface (for 1.0 MeV natural radioactivity radiation). For complete definition see Appendix 1. (See file GRS_REQS_7_2_021.TIF for the equation) 22 NC_Geom_Weight_1.0MeV Steradians Normalization coefficient. It relates the gamma-ray flux at the detector and the intensity of gamma-ray radiation from the asteroid surface in the direction normal to the surface (for 1.0 MeV non-elastic scattering and thermal neutron capture radiation). For complete definition see Appendix 1. (See file GRS_REQS_7_2_021.TIF for the equation) 23 NR_Geom_Weight_3.0MeV Steradians Normalization coefficient. It relates the gamma-ray flux at the detector and the intensity of gamma-ray radiation from the asteroid surface in the direction normal to the surface (for 3.0 MeV natural radioactivity radiation). For complete definition see Appendix 1. (See file GRS_REQS_7_2_022.TIF for the equation) 24 NC_Geom_Weight_3.0MeV Steradians Normalization coefficient. It relates the gamma-ray flux at the detector and the intensity of gamma-ray radiation from the asteroid surface in the direction normal to the surface (for 3.0 MeV non-elastic scattering and thermal neutron capture radiation). For complete definition see Appendix 1. (See file GRS_REQS_7_2_022.TIF for the equation) 25 NC_Geom_Weight_6.0MeV Steradians Normalization coefficient. It relates the gamma-ray flux at the detector and the intensity of gamma-ray radiation from the asteroid surface in the direction normal to the surface (for 6.0 MeV non-elastic scattering and thermal neutron capture radiation). For complete definition see Appendix 1. (See file GRS_REQS_7_2_023.TIF for the equation) 26 Boresight_Intersect_Lat Degrees Latitude of boresight intersection in the middle of integration period Coordinate transformation Asteroid Body Fixed, Cartesian to Asteroid Body Fixed, Spherical. Intersection point (x,y,z) of boresight with asteroid surface converted to Latitude. LAT = Degrees(ARC_SIN(Z/R)) (R solved for in eqn 28) 27 Boresight_Intersect_Lon Degrees Longitude of boresight intersection in the middle of integration period Coordinate transformation Asteroid Body Fixed, Cartesian to Asteroid Body Fixed, Spherical. Intersection point (x,y,z) of boresight with asteroid surface converted to Longitude. 1. LON = -1.*Degrees(ARC_TAN(Y/X)) 2. LON = 270 for x = 0 AND y > 0 3. LON = 90 for x = 0 AND y < 0 28 Boresight_Intersect_R Kilometers Radius-vector of boresight intersection in the middle of integration period Coordinate transformation Asteroid Body Fixed, Cartesian to Asteroid Body Fixed, Spherical. Intersection point (x,y,z) of boresight with asteroid surface converted to Radius from center of asteroid mass. R = SQRT( X^2 + Y^2 + Z^2) (R is needed in sol'n 26) 29 SPICE_Kernel_ID Version Number Specified by NAIF 30 Plate_Model_ID Version Number 31 Processing_Software_ID Version Number 32 DataBase_Version_ID Version Number I. Numerical Specifications for GRS Level-2 Summary Record FORMAT 3 : Numerical specifications for summarized GRS Level-2 record (output) I.1. - I.7. NEAR GRS Summarized Spectra: 4 spectra*1024 channels*(Real*4), 1 spectrum*21 channels(Real*4), 1 spectrum*1024 channels*(Real*4), 1 spectrum*21 channels(Real*4) Measuring units: Counts/Channel (See file GRS_REQS_7_2_024.TIF for the equations for I.1. - I.7.) Sodium Iodide summed spectrum: Bismuth Germanate summed spectrum: Anti-Coincidence summed spectrum: Sodium Iodide single escape summed spectrum: Bismuth Germanate single escape summed spectrum: Sodium Iodide double escape summed spectrum: Bismuth Germanate double escape summed spectrum: I.8. NEAR GRS Summarized Engineering (ENG) Parameters: 13*(Real*4) PARAMETER NAME UNITS 0 GAIN_STANDARD_BGO keV/Channel User specified or default 1 GAIN_STANDARD_NAI keV/Channel - " - 2 ZERO_STANDARD_BGO keV - " - 3 ZERO_STANDARD_NAI keV - " - 4 TOTAL_INTEG_TIME Seconds (See file GRS_REQS_7_2_025.TIF for the equation) 5 TOTAL_LIVE_TIME_BGO Seconds (See file GRS_REQS_7_2_025.TIF for the equation) 6 TOTAL_LIVE_TIME_NAI Seconds (See file GRS_REQS_7_2_025.TIF for the equation) 7 BGO_VALID_CHANNEL_HI Channel Highest channel of summed spectrum uncorrupted by energy scale adjustments. Lowest BGO_VALID_CHANNEL_HI among all MET records in a sum. 8 NAI_VALID_CHANNEL_HI Channel - " - Lowest NAI_VALID_CHANNEL_HI among all MET records in a sum. 9 BGO_VALID_CHANNEL_LOW Channel Lowest channel of summed spectrum uncorrupted by energy scale adjustments. Highest BGO_VALID_CHANNEL_LOW among all MET records in a sum. 10 NAI_VALID_CHANNEL_LOW Channel - " - Highest NAI_VALID_CHANNEL_LOW among all MET records in a sum. 11 Avg_GCR_FLUX Counts/Second Characteristics of average galactic cosmic ray flux (See file GRS_REQS_7_2_025.TIF for the equation) 12 Number_MET Number of MET records in a query I.9. NEAR GRS Summarized Spatial (SPATIAL) Parameters: 13*(Real*4) PARAMETER NAME UNITS 0 AVG_SC_DISTANCE Kilometers Distance from the spacecraft to the surface of the asteroid averaged over MET records in a sum. (See file GRS_REQS_7_2_026.TIF for the equation) 1 AVG_EMI_ANGLE Degrees Emission angle averaged over MET records in a sum. (See file GRS_REQS_7_2_026.TIF for the equation) 2 AVG_TOTAL_EFF_SOLID_ANGLE Steradians Total effective solid angle averaged over MET records in a sum. (See file GRS_REQS_7_2_026.TIF for the equation) 3 NR_Weight_0.3MeV Steradians*Seconds Normalization coefficient. It relates the number of counts in summed spectrum gamma-line to the intensity of gamma-ray radiation of corresponding energy from the asteroid surface in the direction normal to the surface (for natural radioactivity radiation and energy range < 0.45 MeV). For complete definition see Appendix 1. (See file GRS_REQS_7_2_027.TIF for the equation) 4 NC_Weight_0.3MeV Steradians*Counts Normalization coefficient. It relates the number of counts in summed spectrum gamma-line to the intensity of gamma-ray radiation of corresponding energy from the asteroid surface in the direction normal to the surface normalized for GCR flux = 1 proton/(s*cm2) (for non-elastic scattering and thermal neutron capture radiation and energy range < 0.45 MeV). For complete definition see Appendix 1. (See file GRS_REQS_7_2_027.TIF for the equation) 5 NR_Weight_0.6MeV Steradians*Seconds Normalization coefficient. It relates the number of counts in summed spectrum gamma-line to the intensity of gamma-ray radiation of corresponding energy from the asteroid surface in the direction normal to the surface (for natural radioactivity radiation and energy range 0.45..0.8 MeV). For complete definition see Appendix 1. (See file GRS_REQS_7_2_027.TIF for the equation) 6 NC_Weight_0.6MeV Steradians*Counts Normalization coefficient. It relates the number of counts in summed spectrum gamma-line to the intensity of gamma-ray radiation of corresponding energy from the asteroid surface in the direction normal to the surface normalized for GCR flux = 1 proton/(s*cm2) (for non-elastic scattering and thermal neutron capture radiation and energy range 0.45..0.8 MeV). For complete definition see Appendix 1. (See file GRS_REQS_7_2_027.TIF for the equation) 7 NR_Weight_1.0MeV Steradians*Seconds Normalization coefficient. It relates the number of counts in summed spectrum gamma-line to the intensity of gamma-ray radiation of corresponding energy from the asteroid surface in the direction normal to the surface (for natural radioactivity radiation and energy range 0.8..2.0 MeV). For complete definition see Appendix 1. (See file GRS_REQS_7_2_028.TIF for the equation) 8 NC_Weight_1.0MeV Steradians*Counts Normalization coefficient. It relates the number of counts in summed spectrum gamma-line to the intensity of gamma-ray radiation of corresponding energy from the asteroid surface in the direction normal to the surface normalized for GCR flux = 1 proton/(s*cm2) (for non-elastic scattering and thermal neutron capture radiation and energy range 0.8..2.0 MeV). For complete definition see Appendix 1. (See file GRS_REQS_7_2_028.TIF for the equation) 9 NR_Weight_3.0MeV Steradians*Seconds Normalization coefficient. It relates the number of counts in summed spectrum gamma-line to the intensity of gamma-ray radiation of corresponding energy from the asteroid surface in the direction normal to the surface (for natural radioactivity radiation and energy range 2.0..4.5 MeV). For complete definition see Appendix 1. (See file GRS_REQS_7_2_028.TIF for the equation) 10 NC_Weight_3.0MeV Steradians*Counts Normalization coefficient. It relates the number of counts in summed spectrum gamma-line to the intensity of gamma-ray radiation of corresponding energy from the asteroid surface in the direction normal to the surface normalized for GCR flux = 1 proton/(s*cm2) (for non-elastic scattering and thermal neutron capture radiation and energy range 2.0..4.5 MeV). For complete definition see Appendix 1. (See file GRS_REQS_7_2_029.TIF for the equation) 11 NC_Weight_6.0MeV Steradians*Counts Normalization coefficient. It relates the number of counts in summed spectrum gamma-line to the intensity of gamma-ray radiation of corresponding energy from the asteroid surface in the direction normal to the surface normalized for GCR flux = 1 proton/(s*cm2) (for non-elastic scattering and thermal neutron capture radiation and energy range > 4.5 MeV). For complete definition see Appendix 1. (See file GRS_REQS_7_2_029.TIF for the equation) 12 ESTIMATED_COVERED_AREA Sq. Kilometers Estimated area of the asteroid surface covered by MET records in a sum For a spatial query (See file GRS_REQS_7_2_029.TIF for the equations) For a temporal query J. Numerical Specifications for GRS Fractional Footprint Accounting System PARAMETER NAME UNITS 0 MET Seconds Mission Elapsed Time at start of integration. 1 Footprint_Bin_Total_Area Sq. Kilometers NOT VALID 2 Footprint_Bin_Visible_Area Sq. Kilometers Total area of all plates in the footprint that belong to the bin, visible from the spacecraft. Fractions are considered as in H11 param.15 (See file GRS_REQS_7_2_029.TIF for the equation) 3 Total_Eff_Solid_Angle_Fraction Unitless Fraction of the total effective solid angle tha can be attributed to the bin. (See file GRS_REQS_7_2_030.TIF for the equation) 4 NR_Spectrum_Fraction Unitless Fraction of the spectrum that can be attributed to the bin (for natural radioactivity radiation). (See file GRS_REQS_7_2_030.TIF for the equation) 5 NC_Spectrum_Fraction Unitless Fraction of the spectrum that can be attributed to the bin (for non-elastic scattering and thermal neutron capture radiation). (See file GRS_REQS_7_2_031.TIF for the equation) 6 Binid Value Bin identifier generated by the Bin generation system APPENDIX 1 Definitions for: Instr_Angular_Response_Fct_YYMeV, where YY can be 0.3, 0.6, 1.0, 3.0 or 6.0; NC_Angular_Fct; NC_Geom_Weight_YYMeV; NC_Weight_YYMeV; NR_Geom_Weight_YYMeV; NR_Weight_YYMeV (See files GRS_REQS_7_2_032.TIF and GRS_REQS_7_2_033.TIF for the full appendix and equations) APPENDIX 2 Approximations for: Instr_Angular_Response_Fct_YYMeV, where YY can be 0.3, 0.6, 1.0, 3.0 or 6.0; NC_Angular_Fct (See file GRS_REQS_7_2_034.TIF for the full appendix and equations) (See file GRS_REQS_7_2_035.TIF for the figure) Figure 1. GRS angular response function for radiation 0.3 MeV (See file GRS_REQS_7_2_035.TIF for the figure) Figure 2. GRS angular response function for radiation 0.6 MeV (See file GRS_REQS_7_2_036.TIF for the figure) Figure 3. GRS angular response function for radiation 1.0 MeV (See file GRS_REQS_7_2_036.TIF for the figure) Figure 4. GRS angular response function for radiation 3.0 MeV (See file GRS_REQS_7_2_037.TIF for the figure) Figure 5. GRS angular response function for radiation 6.0 MeV (See file GRS_REQS_7_2_037.TIF for the figure) Figure 6. Angular dependence of non-elastic scattering and thermal neutron capture gamma-ray emission from the surface (approximation). APPENDIX 3 Location of GRS Level-2 Parameters in the U of A Database (The tables in Appendix 3 are not included but can be accessed through the TIF files identified below or in the WORD or PDF complete files.) E.8. NEAR GRS Science Housekeeping (SCI HK) Parameters: 31*(Integer*4) (See files GRS_REQS_7_2_038.TIF to GRS_REQS_7_2_041.TIF for tables) E.9. NEAR GRS Engineering Housekeeping (ENG HK) Parameters: 152*(REAL*4) (See files GRS_REQS_7_2_042.TIF to GRS_REQS_7_2_046.TIF for tables) E.10. NEAR GRS Derived Engineering (DER ENG) Parameters: 17*(Real*4), 1*(Integer*4), 1*(4*Integer*4) (See file GRS_REQS_7_2_046.TIF for tables) E.11. NEAR GRS Spatial (SPATIAL) Parameters: 1*(Integer*4), 32*(Real*4) (See files GRS_REQS_7_2_047.TIF to GRS_REQS_7_2_048.TIF for tables) G. Listing of Parameters for GRS Fractional Footprint Accounting System (See file GRS_REQS_7_2_048.TIF for table) NEAR GRS Requirements Specs Revision Notes NEAR XGRS Team Meeting, September 15, 1999, (Version 7 Upgrades) 1. Pg.3 Removed 2 Eng_hk redundant parameters from record: Formats 1 and 2: Eng_HK changed from 154 to 152 total parameters. Two parameters: gray_burst_thresh_val: Partition Offset (46,139) kept at 46 gray_burst_sci_rec_mode: positions (62,140) kept at 62 Related: Forced changes in E.9 title (pg.6) and list (Pg.9), H.9 (title) pg.13 Modified SCIHK for new V7 totals 2. Pg.6 Added 6 SCI_HK parameters E.8 and labeled for version 7 sofware upgrade. 3. Pg.9 Added 14 ENG_HK parameters E.9 and labeled for version 7 software upgrade. 4. Pg.9 E.10 BADID and QUERYID is a total 5*(I*4) field in Title 5. Pg.12 Added elaboration of 6 BINID to section G. (Fractional Footprint Accounting System) 6. Pg.13 Modified Live Time Eqns for NAI, BGO 7. Pg.21 Corrected Boresite intersection point for Lat-lon-R eqns Spatial Partition Offsets (32,33,34) Resp. -1. designates 180 degree rotation in longitude to match Cornell from test data 8. Pg.15 Changed Bsite km to normal 9. Pg.29 Added elaboration of 6 BINID to section J. See item 5. (Fractional Footprint Accounting System) 10.Pg.32 * Need to make eqn mods for Instrument_Angular_Response_Fct_0.3Mev, 20