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EOSDIS TEST SYSTEM (ETS) HIGH-RATE SYSTEM (HRS)Mirchandani, Chandru, Daniel, Kenneth Jr, Nguyen, Diem, Hilinski, Stan 10 1900 (has links)
International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada / NASA’s use of high bandwidth packetized Consultative Committee for Space Data
Systems (CCSDS) telemetry in the Earth Observing System (EOS) mission presents a
great challenge to ground data system developers. The EOS mission calls for high data rate
interfaces and small packet sizes which would dramatically increase the real-time
workload on ground packet processing systems.
NASA’s Goddard Space Flight Center (GSFC) has been developing packet processing
subsystems for over a decade. This paper will discuss the design of a high-rate telemetry
test system and a simulation software package. The system will support CCSDS telemetry
formats and perform frame synchronization, error detection and correction, packet
reassembly and sorting, error checking, and data set creation. In addition, a highly
automated operation environment is designed to minimize human intervention in control
and monitoring, and data distribution. The design is based on a Very Large Scale
Integration (VLSI) Level Zero Processing (LZP) System technologies, VLSI telemetry
data simulation and processing functional components, Object-Oriented Design
methodologies, C++ programming environment, shareware and Open Software Foundation
(OSF)/Motif-based Graphical User Interfaces (GUI).
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RECONFIGURABLE GATEWAY SYSTEMS FOR SPACE DATA NETWORKINGDavis, Don, Bennett, Toby, Costenbader, Jay 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / Over a dozen commercial remote sensing programs are currently under development
representing billions of dollars of potential investment. While technological advances have
dramatically decreased the cost of building and launching these satellites, the cost and
complexity of accessing their data for commercial use are still prohibitively high.
This paper describes Reconfigurable Gateway Systems which provide, to a broad
spectrum of existing and new data users, affordable telemetry data acquisition, processing
and distribution for real-time remotely sensed data at rates up to 300 Mbps. These
Gateway Systems are based upon reconfigurable computing, multiprocessing, and process
automation technologies to meet a broad range of satellite communications and data
processing applications. Their flexible architecture easily accommodates future
enhancements for decompression, decryption, digital signal processing and image / SAR
data processing.
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