PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2007-07-18 INTERCHANGE_FORMAT = ASCII NOTE = "N/A" END_OBJECT = TEXT END Dual-Polarization Calibrated Radar Map of the Moon 1. Introduction Radar backscatter power from the lunar surface was collected at a wavelength of 70 cm, using the 305 m Radio Telescope at Arecibo to transmit and the NRAO's 105 m Robert C. Byrd Green Bank Telescope to receive. 2. File Formats The data in this archive are organized into folders based on NASA data processing level. Data in the 'level1' folder correspond to NASA Level 1B, or PDS Level 4 Resampled Data. According to the PDS Standards Reference, these are 'data that have been resampled in time or space domains in such a way that the original edited data cannot be reconstructed.' Data in the 'level2' folder correspond to NASA Level 2, or PDS Level 5 Derived Data. According to the PDS Standards Reference, these are 'derived results, as maps, reports, graphics, etc.' Each image file in the archive has an accompanying detached PDS label. Please see lrm_ds.cat for detailed information describing the data. All detached label and document files are stream format files, with a carriage return (ASCII 13) and a line feed character (ASCII 10) at the end of each record. This allows the files to be read by the MacOS, Windows, and Unix operating systems. All tabular files are described by detached PDS labels, which are label files having the same name as the data files they describe, with the extension .LBL. For example, the file INDEX.TAB is accompanied by the detached label file INDEX.LBL in the same directory. Tabular files are formatted so that they may be read directly into many database management systems (DBMS) or spreadsheet programs on various computers. All fields are separated by commas, and character fields are enclosed in double quotation marks ("). The "start byte" and "bytes" values listed in a PDS label do not include the commas between fields or the quotation marks surrounding character fields. The records are of fixed length, and the last two bytes of each record contain the ASCII carriage return and line feed characters. This allows a table to be treated as a fixed length record file on computers that support this file type and as a normal text file on other computers. 3. Archive Contents Files in this archive are organized into a series of subdirectories below the top-level directory. The archive organization and the contents of each directory are described below. Top-level Directory ------------------- AAREADME.TXT The file you are currently reading. VOLDESC.CAT This text file contains a description of the volume contents as a PDS catalog object. It is a required file on PDS archive volumes. ERRATA.TXT This text file contains comments and errata concerning the archive volume. CATALOG Directory ----------------- Files in the CATALOG directory are text files containing documentation formatted in PDS object description language. The files contain information about the observatories and instruments involved in acquiring the data, the data set, references, and personel involved in archiving the data. See the file CATINFO.TXT for details. DATA Directory -------------- The data files and associated PDS labels are stored in the DATA directory. Data are organized based on NASA processing level. See DATAINFO.TXT for details. INDEX Directory --------------- The INDEX directory contains a PDS index file for this archive. An index file is an ASCII table with each record (or line) in the table containing information about a single data product in the archive. See the file INDXINFO.TXT for additional details. DOCUMENT Directory ------------------ The DOCUMENT directory contains document files relating to this archive. See DOCINFO.TXT for a description of the files in the DOCUMENT directory. BROWSE Directory ---------------- The BROWSE directory contains reduced resolution versions of the data products, organized based on NASA processing level. See BROWINFO.TXT for additional details. 4. Whom to Contact for Information For questions concerning this volume set, contact: PDS Geosciences Node Washington University 1 Brookings Drive, Campus Box 1169 St. Louis, MO 63130 314-935-9295 Web Site: http://pds-geosciences.wustl.edu/ E-mail: geosci@wunder.wustl.edu For general information related to the PDS, contact: Planetary Data System, PDS Operator M/S 202-101 Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena, CA 91109-8099 818-354-4321 WWW Site: http://pds.jpl.nasa.gov/ E-mail: pds_operator@jpl.nasa.gov 5. Cognizant Persons This archive volume designed and produced at the PDS Geosciences Node, Washington University, St. Louis, Missouri by Edward Guinness, Susan Slavney, and Jennifer Ward.