Fault tolerant, radiation hard, high performance digital signal processorAn architecture has been developed for a high-performance VLSI digital signal processor that is highly reliable, fault-tolerant, and radiation-hard. The signal processor, part of a spacecraft receiver designed to support uplink radio science experiments at the outer planets, organizes the connections between redundant arithmetic resources, register files, and memory through a shuffle exchange communication network. The configuration of the network and the state of the processor resources are all under microprogram control, which both maps the resources according to algorithmic needs and reconfigures the processing should a failure occur. In addition, the microprogram is reloadable through the uplink to accommodate changes in the science objectives throughout the course of the mission. The processor will be implemented with silicon compiler tools, and its design will be verified through silicon compilation simulation at all levels from the resources to full functionality. By blending reconfiguration with redundancy the processor implementation is fault-tolerant and reliable, and possesses the long expected lifetime needed for a spacecraft mission to the outer planets.
Document ID
19910070027
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Holmann, Edgar (Stanford Univ. CA, United States)
Linscott, Ivan R. (Stanford Univ. CA, United States)
Maurer, Michael J. (Stanford Univ. CA, United States)
Tyler, G. L. (Stanford University CA, United States)
Libby, Vibeke (Lockheed Research Laboratories Palo Alto, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Meeting Information
Meeting: IEEE/AIAA/NASA Digital Avionics Systems Conference