Moon Tiled DSK File for 118M DEM USGS V1 Surface by ESA SPICE Service ================================================================================ This file contains one of 1024 tiles comprising Lunar digital shape model using shape data derived by the Lunar Reconnaissance Orbiter (LRO) mission based on LOLA data. It has been created with the utility MKDSK by the ESA SPICE Service on June 30, 2023. Objects ------------------------------------------------------------------------ This file contains DSK data for the MOON surface. NAIF ID code for MOON is 301. DSK Surface name is MOON_118M_DEM_USGS_V1 and the Surface NAIF ID code is 3010000. References ------------------------------------------------------------------------ [1] DSK Required Reading. [2] MKDSK User Guide. [3] DSKEXP User Guide. [4] https://astrogeology.usgs.gov/search/details/Moon/LRO/LOLA/ Lunar_LRO_LOLA_Global_LDEM_118m_Mar2014/cub Contact Information ------------------------------------------------------------------------ If you have any questions regarding this file contact SPICE support at ESAC: Alfredo Escalante Lopez (+34) 91-8131-429 spice@sciops.esa.int or NAIF at JPL: Boris Semenov (818) 354-8136 Boris.Semenov@jpl.nasa.gov Related SPICE kernels ------------------------------------------------------------------------ This file should be used together with the kernel set described below (*): Kernel Comments ------------------------ ------------------------------------- moon_lola_dem_118m_v00.tf is the Frame Kernel that contains the DSK Surface ID Codes for Moon. moon_080317.tf Contains lunar frame specifications compatible with the current lunar binary PCK file moon_pa_de421_1900-2050.bpc. moon_pa_de421_1900-2050.bpc This kernel contains high-accuracy lunar orientation data from the JPL Solar System Dynamics Group's planetary ephemeris DE-421. pck00010.tpc is the Planetary Constants Kernel that provides the cartographic and physical constants data for Solar System bodies. de405.bsp Contains DE405 ephemeris data for planet barycenters, and for the Sun, planets and satellites mass centers. naif0012.tls is a Leapseconds Kernel file used in conversions between ephemeris time and UTC (coordinated universal time). (*) or any higher version of the same kernels About the DSK generation ------------------------------------------------------------------------ In order to retain the maximum spatial resolution of the source data, a set of tiled DSKs have been produced to provide full coverage of the Moon. The planet is separated in 32 by 32 latitudinal and longitudinal divisions, each of them covering 11.25 degrees longitude and 5.625 degrees latitude. The latitudinal sector YY and longitudinal sector XX of the tiled grid is indicated in the DSK filename. moon_lola_dem_118m_YY_XX_v02.bds For example, the tile 01_01 covers latitude range from 84.375 to 90.0 and longitude range 0.0 to 11.25, the tile 01_02 -- covers latitude range from 84.375 to 90.0 and longitude range from 11.25 to 22.5, and the tile 32_32 -- covers latitude range from -90.0 to -84.375 and longitude range from 348.75 to 360.0. The plate model data used to generate this DSK is obtained from the Digital Elevation Model from USGS [4]. In order to make sure there are no gaps at the boundaries between tiles, each segment has been created using ``padding'' including additional plates extending slightly beyond the segments boundaries (consecutive tiles overlap by few rows of plates). This ensures that no ray emanating from the origin and hitting the sphere within the segment's longitude-latitude coverage can miss all of the segment's plates. For more details see Segment Coverage Errors section in [1]. This DSK has been generated using MKDSK [2] by Alfredo Escalante Lopez from the following file: {objfile} from the following dataset: Lunar_LRO_LOLA_Global_LDEM_118m_Mar2014.tif The data set description hereafter is taken from [4]: Data Set Overview ================= The LOLA has collected over more than 6.5 billion measurements of global surface height with a vertical precision of 10 cm and an accuracy of 1m (Mazarico et al., 2013). With such highly accurate global coverage, the resulting topographic map has become the reference geodetic framework for the lunar community. This digital elevation model (DEM) is based on data from the Lunar Orbiter Laser Altimeter (LOLA; Smith et al., 2010), an instrument on the National Aeronautics and Space Agency (NASA) Lunar Reconnaissance Orbiter (LRO) spacecraft (Tooley et al., 2010). The created DEM represents more than 6.5 billion measurements gathered between July 2009 and July 2013, adjusted for consistency in the coordinate system described below, and then converted to lunar radii (Mazarico et al., 2012). Entity and Attribute Detailed Description ========================================= Conversion to local height (meters) is accomplished via the following equation: Height = (Pixel Value * Scaling Factor) Conversion to local Radius (meters) is computed as follows: Radius = (Pixel Value * Scaling factor) + 1737400 where Scaling Factor = 0.5 (as listed in the label as Multiplier). PDS label for the input shape data file ======================================= PDS_VERSION_ID = PDS3 DD_VERSION_ID = PDSCAT1R100 LABEL_REVISION_NOTE = "2017-05-01, David P. Mayer (USGS), initial PDS3 label pointing to GeoTIFF;" RECORD_TYPE = FIXED_LENGTH DATA_SET_ID = LRO-L-LOLA-4-GDR-V1.0 PRODUCER_ID = LRO_LOLA_TEAM PRODUCER_FULL_NAME = "DAVID E. SMITH" PRODUCER_INSTITUTION_NAME = "GODDARD SPACE FLIGHT CENTER" PRODUCT_ID = LDEM_256_FLOAT_JULY2013 INSTRUMENT_HOST_NAME = "LUNAR RECONNAISSANCE ORBITER" INSTRUMENT_NAME = "LUNAR ORBITER LASER ALTIMETER" INSTRUMENT_ID = LOLA RECORD_BYTES = 184320 TARGET_NAME = MOON ^IMAGE = ("Lunar_LRO_LOLA_Global_LDEM_118m_Mar2014 .tif", 738234 ) OBJECT = IMAGE LINES = 46080 LINE_SAMPLES = 92160 SAMPLE_BITS = 16 SAMPLE_TYPE = LSB_INTEGER BANDS = 1 BAND_STORAGE_TYPE = BAND_SEQUENTIAL END_OBJECT = IMAGE OBJECT = IMAGE_MAP_PROJECTION MAP_PROJECTION_TYPE = SIMPLE_CYLINDRICAL A_AXIS_RADIUS = 1737.4 B_AXIS_RADIUS = 1737.4 C_AXIS_RADIUS = 1737.4 FIRST_STANDARD_PARALLEL = N/A SECOND_STANDARD_PARALLEL = N/A POSITIVE_LONGITUDE_DIRECTION = EAST CENTER_LATITUDE = N/A CENTER_LONGITUDE = 0.0 REFERENCE_LATITUDE = N/A REFERENCE_LONGITUDE = N/A LINE_FIRST_PIXEL = 1 LINE_LAST_PIXEL = 46080 SAMPLE_FIRST_PIXEL = 1 SAMPLE_LAST_PIXEL = 92160 MAP_PROJECTION_ROTATION = 0.0 MAP_RESOLUTION = 256.0 MAP_SCALE = 118.450588 MAXIMUM_LATITUDE = 90.0 MINIMUM_LATITUDE = -90.0 EASTERNMOST_LONGITUDE = 180.0 WESTERNMOST_LONGITUDE = -180.0 LINE_PROJECTION_OFFSET = 23039.499922195406 SAMPLE_PROJECTION_OFFSET = 46079.49984439081 COORDINATE_SYSTEM_TYPE = "BODY-FIXED ROTATING" COORDINATE_SYSTEM_NAME = PLANETOCENTRIC PROJECTION_LATITUDE_TYPE = PLANETOCENTRIC END_OBJECT = IMAGE_MAP_PROJECTION END DSKBRIEF Output ------------------------------------------------------------------------ {dskbrief} MKDSK Configuration File ------------------------------------------------------------------------ This section contains the configuration data that was used by the MKDSK program to generate this DSK file from the the .tab input file. {mkdsk}