JPL/IK NEAR Laser Rangefinder IK file ----------------------------------------------------------------------- Version 4 (production version) by GAN, NASA-GSFC, September 05, 2001 Changed TKFRAME_-93006_ANGLES to minimize crossovers. Version 1.2 (prototype) by JAB, NAIF/JPL, September 11, 1997 SC_BUS frame definitions were swapped with SC_BUS_PRIME, to follow the NEAR project's use of the code -93000 for the SC_BUS_PRIME frame. Version 1.1 (prototype) by BVS, NAIF/JPL, August 11, 1997 The frame definitions were changed to reflect correct transformation sense specified by FRAMES.REQ document released in SPICE toolkit N0047. Version 1.0 (prototype) by BVS, NAIF/JPL, April 16, 1997 Spacecraft frame definitions. Required to support automatic frame transformations. Two frames are defined for NEAR s/c: - s/c frame (or s/c technological frame); - s/c prime frame; rotated -135 degrees around Z relative to the s/c frame; Orientation of the first frame is provided in CK files relative to some inertial or non-inertial frame; orientation of the second frame is a constant from the first frame offset specified in the frame definition. Note that these definitions are duplicated in IK files for all other NEAR instruments. Note that angles in the frame definitions are specified for "from instrument to base (relative to) frame" transformation. \begindata FRAME_NEAR_SC_BUS_PRIME = -93000 FRAME_-93000_NAME = 'NEAR_SC_BUS_PRIME' FRAME_-93000_CLASS = 3 FRAME_-93000_CLASS_ID = -93000 FRAME_-93000_CENTER = -93 CK_-93000_SCLK = -93 CK_-93000_SPK = -93 FRAME_NEAR_SC_BUS = -93100 FRAME_-93100_NAME = 'NEAR_SC_BUS' FRAME_-93100_CLASS = 4 FRAME_-93100_CLASS_ID = -93100 FRAME_-93100_CENTER = -93 TKFRAME_-93100_SPEC = 'ANGLES' TKFRAME_-93100_RELATIVE = 'NEAR_SC_BUS_PRIME' TKFRAME_-93100_ANGLES = ( -135.0, 0.0, 0.0 ) TKFRAME_-93100_AXES = ( 3, 2, 1 ) TKFRAME_-93100_UNITS = 'DEGREES' \begintext NLR instrument frame definition. Required to support automatic frame transformations. Orientation of this frame is a constant offset from s/c prime frame specified in the frame definition. Note that angles in the frame definitions are specified for "from instrument to base (relative to) frame" transformation. \begindata FRAME_NEAR_NLR = -93006 FRAME_-93006_NAME = 'NEAR_NLR' FRAME_-93006_CLASS = 4 FRAME_-93006_CLASS_ID = -93006 FRAME_-93006_CENTER = -93 TKFRAME_-93006_SPEC = 'ANGLES' TKFRAME_-93006_RELATIVE = 'NEAR_SC_BUS_PRIME' TKFRAME_-93006_ANGLES = (-0.040, -0.05, 0.0 ) TKFRAME_-93006_AXES = ( 3, 2, 1 ) TKFRAME_-93006_UNITS = 'DEGREES' \begintext Instrument FOV shape/orientation definitions. Conform to specification in the header of the GETFOV subroutine. FOV boundaries are defined assuming that: - FOV has circular shape; - FOV angular diameter of the circle is 235 microradians; - boresight vector intersects FOV exactly at the center of the circle; \begindata INS-93006_FOV_FRAME = 'NEAR_NLR' INS-93006_FOV_SHAPE = 'CIRCLE' INS-93006_BORESIGHT = ( 1.0 0.0 0.0 ) INS-93006_FOV_BOUNDARY_CORNERS = ( 1.0 0.0 0.0001175 ) \begintext