Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978smse.conf.....l&link_type=abstract
American Institute of Aeronautics and Astronautics and NASA, Conference on 'Smart' Sensors, Hampton, Va., Nov. 14-16, 1978, AIAA
Astronomy and Astrophysics
Astronomy
Airborne/Spaceborne Computers, Data Processing, Infrared Astronomy Satellite, Infrared Telescopes, Aerospace Technology Transfer, Computerized Simulation, Infrared Filters, Microprocessors, Noise Reduction, Numerical Control, Signal Processing
Scientific paper
Onboard data processing has been developed for the Infrared Astronomical Satellite (IRAS) telescope system to effectively utilize the RF bandwidth and minimize the ground-data processing costs. Use of filtering techniques, data deglitching circuits, and data encoding algorithms are combined with a microprocessor-controlled telescope system to achieve a system dynamic range of 100,000 with a noise equivalent flux density of no less than 10 to the minus 19th W/sq cm. Extraneous data, e.g., noise due to radiation hits, will be removed prior to transmission, thereby optimizing ground-data processing for the highest sensitivity and reliability. Simulation results are presented which demonstrate the advantages gained through the use of onboard data processing and illustrate the possible merging of these techniques with an array for the future evolution of 'smart' sensors.
Long Eoin
Lum H.
Neal Peter
Wong David
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