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Noiseless coding for the magnetometerFuture unmanned space missions will continue to seek a full understanding of magnetic fields throughout the solar system. Severely constrained data rates during certain portions of these missions could limit the possible science return. This publication investigates the application of universal noiseless coding techniques to more efficiently represent magnetometer data without any loss in data integrity. Performance results indicated that compression factors of 2:1 to 6:1 can be expected. Feasibility for general deep space application was demonstrated by implementing a microprocessor breadboard coder/decoder using the Intel 8086 processor. The Comet Rendezvous Asteroid Flyby mission will incorporate these techniques in a buffer feedback, rate-controlled configuration. The characteristics of this system are discussed.
Document ID
19870020159
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Rice, Robert F. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Lee, Jun-Ji (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 5, 2013
Publication Date
June 15, 1987
Subject Category
Spacecraft Instrumentation
Report/Patent Number
NAS 1.26:181325
JPL-PUBL-87-19
NASA-CR-181325
Accession Number
87N29592
Funding Number(s)
CONTRACT_GRANT: NAS7-918
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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