Prototype architecture for a VLSI level zero processing systemThe prototype architecture and implementation of a high-speed level zero processing (LZP) system are discussed. Due to the new processing algorithm and VLSI technology, the prototype LZP system features compact size, low cost, high processing throughput, and easy maintainability and increased reliability. Though extensive control functions have been done by hardware, the programmability of processing tasks makes it possible to adapt the system to different data formats and processing requirements. It is noted that the LZP system can handle up to 8 virtual channels and 24 sources with combined data volume of 15 Gbytes per orbit. For greater demands, multiple LZP systems can be configured in parallel, each called a processing channel and assigned a subset of virtual channels. The telemetry data stream will be steered into different processing channels in accordance with their virtual channel IDs. This super system can cope with a virtually unlimited number of virtual channels and sources. In the near future, it is expected that new disk farms with data rate exceeding 150 Mbps will be available from commercial vendors due to the advance in disk drive technology.
Document ID
19900041854
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shi, Jianfei (NASA Goddard Space Flight Center; RMS Technologies, Inc. Greenbelt, MD, United States)
Grebowsky, Gerald J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Horner, Ward P. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chesney, James R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)