urn:nasa:pds:clementine1_lidar:data:r100_199 1.0 1.19.0.0 Product_Observational 2023-02-14 1.0 PDS4 migrated product. 1994-03-12T23:28:48.863Z 1994-04-02T15:30:49.465Z Deep Space Program Science Experiment Mission urn:nasa:pds:context:investigation:mission.deep_space_program_science_experiment data_to_investigation Clementine 1 Clementine 1 Host urn:nasa:pds:context:instrument_host:spacecraft.clem1 is_instrument_host Radio Science Subsystem Instrument urn:nasa:pds:context:instrument:clem1.lidar is_instrument Moon Satellite urn:nasa:pds:context:target:satellite.earth.moon data_to_target r100_199.tab This file contains aggregated topographic ranges, radii, and related data along each observational pass during which LIDAR laser range data were acquired. The data were created using preliminary spacecraft timing, orientation, and orbital solutions. The laser ranges have been converted from counts to meters using a calibration factor of 39.972 m per count. Timing information may have substantial errors owing to spacecraft computer resets and clock ambiguity. The lidar electronics triggered on photon pulses continuously, and recorded up to four pulses within a programmable range window. The last trigger before and the first trigger after the range window were also recorded. Usually, but not always, the first trigger within the range window was the valid range. For a few laser shots, multiple pulses were detected within the expected time interval for lunar reflections. Note: the fields START_ORBIT_NUMBER and STOP_ORBIT_NUMBER in this label refer to the Clementine revolution numbers, which increment at the start of the observational pass. 0 42028 The Clementine lidar table contains the laser ranges and related data for each orbit. Each row in the table contains the date/time, boresight angle, position of laser bounce points, radii, relative elevations, revolution number, range gates, and thresholds. The (delimited) data require 348 ASCII characters; these are followed by an ASCII carriage-return, and an ASCII line-feed. Carriage-Return Line-Feed 37 0 350 universal time 1 1 ASCII_Date_Time_YMD 23 The date and time of the laser fire, in Universal Time Coordinates (UTC), for that point in the orbit. A 2-ms delay occurs before the actual laser fire. camera frame 2 24 ASCII_Integer 6 The camera frame number of the laser shot. revolution number 3 30 ASCII_Integer 4 The revolution during which a data pass was acquired for that point. The revolutions included are from 8-346. Ranges acquired on calibration passes 8-19 were considered too noisy for topographic ranging. elevation 4 34 ASCII_Real 9 degree The latitude of the laser bounce point, in IAU body-fixed coordinates. longitude 5 43 ASCII_Real 9 degee The longitude of the laser bounce point, in IAU body-fixed coordinates. spacecraft radial distance 6 52 ASCII_Real 10 meter The spacecraft distance from the center of mass of the Moon at the laser fire time. radius of lunar spheroid 7 62 ASCII_Real 10 meter The radius at the laser bounce point latitude of a spheroid of radius 1738 km at the equator, with a flattening of 1/3234.93 corresponding to the flattening of the geoid. s/c position X 8 72 ASCII_Real 10 meter The X component of the spacecraft in IAU body-fixed coordinates. s/c position Y 9 82 ASCII_Real 10 meter The Y component of the spacecraft in IAU body-fixed coordinates. s/c position Z 10 92 ASCII_Real 10 meter The Z component of the spacecraft in IAU body-fixed coordinates. right ascension 11 102 ASCII_Real 7 degrees Right ascension angle of the lidar instrument. declination 12 109 ASCII_Real 7 degrees Declination angle of the lidar instrument. twist 13 116 ASCII_Real 7 degrees Twist angle of the lidar instrument. predicted range 14 123 ASCII_Real 10 meter The range to the spheroid predicted at the time of the laser fire, rounded upward to nearest 100 m. predicted slant range 15 133 ASCII_Real 10 meter The slant range to the spheroid predicted at the time of the laser fire, rounded upward to nearest 100 m. first range before window 16 143 ASCII_Real 10 meter The first range immediately before the opening of the range gate window. Values of 0 indicate that no such trigger occurred. 0 first range inside window 17 153 ASCII_Real 10 meter The first range to trigger inside the range gate window. Values of 0 indicate that no such trigger occurred. 0 second range inside window 18 163 ASCII_Real 10 meter The second range to trigger inside the range gate window. Values of 0 indicate that no such trigger occurred. 0 third range inside window 19 173 ASCII_Real 10 meter The third range to trigger inside the range gate window. Values of 0 indicate that no such trigger occurred. 0 last range inside window 20 183 ASCII_Real 10 meter The last range to trigger inside the range gate window, if any, possibly the same as one of the earlier ranges. first range after window 21 193 ASCII_Real 10 meter The first range to trigger immediately after the closing of the range gate window, if any. Values of 0 indicate that no such trigger occurred. 0 first radius before window 22 203 ASCII_Real 10 meter The first radius immediately before the opening of the range gate window. Values of -99999.99 indicate that no such trigger occurred. -99999.99 first radius inside window 23 213 ASCII_Real 10 meter The first radius to trigger inside the range gate window. Values of -99999.99 indicate that no such trigger occurred. -99999.99 second radius inside window 24 223 ASCII_Real 10 meter The second radius to trigger inside the range gate window. Values of -99999.99 indicate that no such trigger occurred. -99999.99 third radius inside window 25 233 ASCII_Real 10 meter The third radius to trigger inside the range gate window. Values of -99999.99 indicate that no such trigger occurred. -99999.99 last radius inside window 26 243 ASCII_Real 10 meter The last radius to trigger inside the range gate window, if any, possibly the same as one of the earlier ranges. -99999.99 first radius after window 27 253 ASCII_Real 10 meter The first radius to trigger immediately after the closing of the range gate window, if any. Values of -99999.99 indicate that no such trigger occurred. -99999.99 first elevation before window 28 263 ASCII_Real 10 meter The first elevation above the spheroid immediately before the opening of the range gate window. Values of -99999.99 indicate that no such trigger occurred. -99999.99 first elevation inside window 29 273 ASCII_Real 10 meter The first elevation above the spheroid to trigger inside the range gate window. Values of -99999.99 indicate that no such trigger occurred. -99999.99 second elevation inside window 30 283 ASCII_Real 10 meter The second elevation above the spheroid to trigger inside the range gate window. Values of -99999.99 indicate that no such trigger occurred. -99999.99 third elevation inside window 31 293 ASCII_Real 10 meter The third elevation above the spheroid to trigger inside the range gate window. Values of -99999.99 indicate that no such trigger occurred. -99999.99 last elevation inside window 32 303 ASCII_Real 10 meter The last elevation above the spheroid to trigger inside the range gate window, if any, possibly the same as one of the earlier values. Values of -99999.99 indicate that no such trigger occurred. -99999.99 first elevation after window 33 313 ASCII_Real 10 meter The first elevation above the spheroid to trigger immediately after the closing of the range gate window, if any. Values of -99999.99 indicate that no such trigger occurred. -99999.99 range gate window opening 34 323 ASCII_Real 10 meter The range window setting after which up to four distinct triggers are recorded per laser shot, as well as the latest trigger before this setting. range gate window closing 35 333 ASCII_Real 10 meter The range window setting after which at most one more trigger is recorded. range threshold A 36 343 ASCII_Integer 3 A programmable voltage setting for range triggers. range threshold B 37 346 ASCII_Integer 3 A programmable voltage setting for range triggers. r100_199.lbl 0 PDS3 Original PDS3 label Carriage-Return Line-Feed