PDS_VERSION_ID = PDS3 PRODUCT_ID = "AAREADME.TXT" RECORD_TYPE = STREAM RELEASE_ID = 0001 REVISION_ID = 0000 OBJECT = TEXT PUBLICATION_DATE = 2016-10-01 NOTE = "AAREADME.TXT describes the MEX MARSIS EDR data archive for the Planetary Science Archive, PSA and the Planetary Data System, PDS." END_OBJECT = TEXT END Mars Express Experiment Data Record Volume MEX-M-MARSIS-2-EDR-EXT5-V1.0 * Introduction * Volume Overview - Quick Start Guide * Volume Contents and Structure * Data File Format * Disclaimer * Acknowledgments ============================================================================== Introduction ============================================================================== This volume set contains the MARSIS Experiment Data Record (EDR) data products for the entire primary mission. This data set consists of the instrument telemetry correlated with the auxiliary information needed to locate observations in space and time. Level 1b data intended users are radar scientists interested in re-doing the entire processing of the received signal. ============================================================================== Volume Overview - Quick Start Guide ============================================================================== MARSIS data in the MARS EXPRESS MARS MARSIS EXPERIMENT DATA RECORD EXTENSION 5 V1.0 are located in the DATA directory, and are organized into sub-directories containing ten orbits each. A Data Product contains data from one or more observations collected using the same operation mode, instrument status and on-board processing scheme within the same orbit. Thus, the content of each MARSIS data product is highly variable in terms of number of echoes, and depends on how operations for the instrument were planned during a given data collection period. An echo is a sequence of time or spectrum samples of a received signal, complemented by auxiliary information. A Data Product is a table, in which each line contains data from a single echo, and each column contains the value of a single parameter or time sample across different frames. A Data Product consists of two files: a binary file containing the instrument telemetry, and a binary table of quantities describing the geometry of observation, generated on-ground from spacecraft navigation data. Each Data Product file is described by an attached PDS label. Format files for table data objects contained in data files, of which several exist according to operation mode, instrument status and on-board processing scheme, are contained in the LABEL directory of each Data Set Volume. Binary data are big-endian numbers of variable size, either integer or floating point. Format descriptors in the LABEL contain all information needed to write import routines for processing software. MARSIS data products can be read by the PDS software NASAView, which reads a PDS label and displays the associated image or table. ============================================================================== Volume Contents and Structure ============================================================================== [MEX-M-MARSIS-2-EDR-EXT5-V1.0] (root directory) | |-AAREADME.TXT Plain text describing volume contents, | organization, and its use (this file). | |-ERRATA.TXT Describes known deficiencies or caveats in the | data on this volume. | |-VOLDESC.CAT High level description of volume contents. | | |-[CATALOG] Information about the Mars Express mission, spacecraft, | and the MARSIS instrument; lists the cognizant personnel | and references relevant documentation. | |-[DATA] Binary archived data from the MARSIS instrument. | | | |-[EDR####X] MARSIS Data for a group of ten orbits from ####0 to | ####9. | | |-[DOCUMENT] Instrument Flight User Manual, Experiment Interface | Control Document, etc. | |-[INDEX] Volume and cumulative indices of archive products. | |-[LABEL] Format descriptions of the archived data products. ============================================================================== Whom to Contact for Information ============================================================================== MEX Project Scientist: Dmitri Titov email: dmitri.titov@esa.int phone: +31 71 565 37 70 fax : +31 71 565 46 97 smail: ESA-ESTEC, SRE-SM Keplerlaan 1, PO Box 299 2200 AG Noordwijk ZH The Netherlands MEX Archive Scientist: Emmanuel Grotheer email: egrotheer@sciops.esa.int phone: +34 91 813 11 00(3) fax : +34 91 813 11 39 smail: ESA-ESAC Camino bajo del Castillo, s/n Urbanización Villafranca del Castillo Villanueva de la Cañada E-28692 Madrid Spain ============================================================================== Acknowledgments ============================================================================== The archiving effort at Istituto Nazionale di Astrofisica - Istituto di Radioastronomia was supported by Federico Cantini, Marco Cartacci, Andrea Cicchetti, Anton B. Ivanov and Raffaella Noschese. We are thankful to David Heather and Emmanuel Grotheer of the Planetary Science Archive for their tireless support.