NOAA Technical Report NESDIS 82
NOAA Technical Report NESDIS 82:
An Introduction to the GOES I-M Imager and Sounder Instruments and the GVAR Retransmission Format
NOAA TECHNICAL REPORT NESDIS 82 OFFICE OF SYSTEMS DEVELOPMENT GROUND SYSTEMS DIVISION WASHINGTON, D.C. October 1994 AN INTRODUCTION TO THE GOES I-M IMAGER AND SOUNDER INSTRUMENTS AND THE GVAR RETRANSMISSION FORMAT PREPARED BY RAYMOND J. KOMAJDA THE MITRE CORPORATION EDITED BY KEITH MCKENZIE OFFICE OF SYSTEMS DEVELOPMENT U.S. DEPARTMENT OF COMMERCE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION NATIONAL ENVIRONMENTAL SATELLITE, DATA, AND INFORMATION SERVICE PREFACE This document is an update of NOAA Technical Report NESDIS 33, published in October, 1987. It is addressed to experienced direct readout users of the GOES Mode AAA processed instrument data. Readers wanting a greater familiarity with Mode AAA are referred to the following documents: GOES GH Data Book, Hughes Aircraft Company, March 1986 Operational VAS Mode AAA Format, Specification, NOAA/NESDIS Office of Systems Development, February 1987, SFP002 The purpose of this document is to acquaint these users with the characteristics of the processed instrument data that are available from the new series of GOES satellites, GOES I-M. This document includes a comparison of the GOES D-H VAS instrument with the instruments on the GOES I-M series of satellites and a definition of the processed instrument data format for GOES I-M. It is the intent of this document to provide direct readout (Mode AAA) users with sufficient background information for them to phaseover to GOES I-M. The topic of this report is the GVAR processed data as it will be retransmitted to direct readout users. Information on the spacecraft, the imaging and sounding instruments, and the ground system is presented only to provide sufficient background and context for an understanding of the GVAR format. GVAR contains Imager and Sounder data. The other on-board instruments and their data and the special purpose transponders are not addressed in this report. GOES I was launched April 13, 1994; redesignated GOES-8 upon attaining geostationary orbit, it is undergoing checkout through October, 1994. The remaining spacecraft in the GOES I-M series are in various stages of assembly. GOES-J is scheduled for launch in 1995; its instruments are in test at this time. The defining document for the GVAR format is Section 3 of Space Systems/Loral Operations Ground Equipment (OGE) Interface Specification DRL 504-02-1, Contract NAS5-29500. The most recent version available at the time of publication is Revision C dated 01/28/94. Much of the material contained herein is compiled directly from documents delivered to the Government under contract by Ford Aerospace and Communications Corporation, Space Systems/Loral, and their subcontractors.
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