Data Set Overview : The Mini-RF Calibrated Data Archive is a time-ordered collection of calibrated Level 2 SAR images collected by the Mini-RF instrument during the LRO mission to the Moon. They are provided in an oblique cylindrical map projection. They also contain stokes parameters files, polarization ratio files, a radar albedo file, and a browse image. Please see documentation in the DOCUMENT directory for additional information on the data files and their format. Parameters : See individual SIS documents, which are located in the DOCUMENT directory, for detailed descriptions of each file contained in this data archive. Processing : The Level 2 burst mode data products are CDRs that the POC produces by ingesting the Level 1 CDRs into the Level 2 SAR processor. The Level 2 CDRs differ from the Level 1 products in that they are orthorectified and are re-sampled into oblique cylindrical map projections. The 'equator' of the map projection will correspond to the line of longitude that the subspacecraft point crossed at the equator before the data collection. A full PDS label accompanies each data file and gives a detailed description of the content and format. Data : These data are stored in the DATA/SAR//LEVEL2 directory on archival volumes. File names are described in MRFLRO_DP_SIS.PDF. These products are map-projected calibrated single swath CDR image data. The science products produced from data collected from the lunar polar regions are in an oblique cylindrical projection. Those produced from more equitorial regions are in an equirectangular projection. Each pixel is represented by two 4-byte floating point values and an 8-byte complex value (one 4-byte floating point real and one 4-byte floating point imaginary value) for a total of 16 bytes per pixel. The first two numbers are the intensity images for H and V receive, respectively. The complex value is the cross power intensity image between the H & V receive. All Level 2 CDR image products are each accompanied by four stokes parameters files, a circular polarization ratio image, a same-sense polarization image and an opposite-sense polarization image. The Mini-RF transmits a right circular polarized signal, and receives Horizontal and vertical polarized signals, and the phase between the polarizations. The Level 2 file consists of four pieces of information per pixel. The received power on the horizontal polarization (ERH), the received power in the vertical polarization (ERV) and the real and imaginary portions of the cross product between the two polarization signals (Re ERH ERV* & Im ERH ERV* ). The four stokes parameters (S1, S2, S3, and S4) are related to the data in the level 1 files by the following equations: S1 : ERH + ERV S2 : ERH - ERV S3 : 2 Re ERH ERV* S4 : -2 Im ERH ERV* These data are stored in the DATA/SAR//LEVEL1 directory on archival volumes. File names are described in LRO_DP_SIS.PDF. Ancillary Data : An extensive set of ancillary files is needed for proper analysis and interpretation of the derived data. Users should refer to the INDEX.TAB listing to locate ancillary files and to the Mini-RF data product SIS for data formats and naming conventions. Coordinate System : The lunar body-fixed frame used by the Mini-RF investigation is referenced to the Moon Principle Axis (PA) coordinate system, as realized using NASA's SPICE products (Frames Kernel). Software : No software is included with this archival data set. Media/Format : These products are delivered on a hard-drive or by ftp and not on a specific formatted medium.

Overview:Data presented here are an accurate representationof the Mini-RF data as received from the spacecraft, with no Doppler orspatial processing.Review:The Mini-RF EDR was reviewed internally by the Mini-RF team prior to releaseto the PDS. PDS also performed an external review of the Mini-RF EDR.Data Coverage and Quality:Data reported are the minimally processed data received from the spacecraftduring five mission phases: Launch, Cruise, Lunar_Orbit_Acquisition,Commissioning, and Exploration_Mission. These mission phases are defined as: Start time End time Phase Name Date (DOY) Date (DOY) ----------------- ---------------- ---------------- LAUNCH 18 Jun 2009 (169) 18 Jun 2009 (169) CRUISE 18 Jun 2009 (169) 23 Jun 2009 (174) LUNAR ORBIT ACQUISITION 23 Jun 2009 (174) 23 Jun 2009 (174) COMMISSIONING 23 Jun 2009 (174) 14 Sep 2009 (257) NOMINAL MISSION 15 Sep 2009 (258) 14 Sep 2010 (257) SCIENCE MISSION 15 Sep 2010 (258) 14 Sep 2012 (258)No Mini-RF data were collected during Launch, Cruise, orLunar_Orbit_Acquisition phases. The Mini-RF collected data during each ofthe other two mission phases. During these planned operational periods, theMini-RF functioned nominally and the data quality was good.An S-Band receive calibration test was conducted on 20 August, 2009. S-Bandtransmit calibration tests were conducted on 22-23 August, 2009. Thesecalibrations permit the characterization of both transmit polarization purityas well as determining how precisely polarization can be measured by theinstrument.Communications demonstration. Mini-RF experiments to demonstrate half-duplexcommunications were conducted on 16 August and 20 August, 2009.The Mini-RF began collecting data over the lunar south polar region 13 July2009 to support LCROSS targeting by characterizing the surfaces ofpermanently shadowed regions. This data collection phase continued until theLCROSS impact on 9 October. 2009.From Oct 14 through Dec. 17, Mini-RF was largely restricted to collectingdata over non-polar sites that lie equatorward of 63 degrees latitude Northand South.Limitations:This data set is minimally processed data. The data are received from thespacecraft telemetry, ingested into the LRO Missions Operations Center (MOC),and then transferred to the APL Payload Operations Center (POC).