Computer Science – Performance
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984spie..445..254e&link_type=abstract
IN: Instrumentation in astronomy V; Proceedings of the Fifth Meeting, London, England, September 7-9, 1983 (A85-25360 10-89). Be
Computer Science
Performance
Analog Circuits, Infrared Astronomy, Infrared Astronomy Satellite, Infrared Telescopes, Spaceborne Telescopes, Spacecraft Electronic Equipment, Equivalent Circuits, Infrared Detectors, Performance Prediction, Polar Orbits, Signal To Noise Ratios, Transfer Functions
Scientific paper
The Infrared Astronomical Satellite (IRAS) operates in a circular sun-synchronous orbit at 900 km. This orbit carries it through the radiation zones of the South Atlantic Anomaly and the polar regions. Penetrating radiation, mainly protons and electrons, produce spurious detector pulses which can be large compared to the outputs generated by infrared sources. To preserve the infrared (IR) sensitivity of the main IRAS instrument, pulse circumvention circuitry discriminates between signals from IR sources and those due to penetrating charged particles. This paper describes the pulse circumvention concept used and its implementation in the IRAS survey instrument. An analysis is given of the operation of the circuit and of the optimization of its parameters for maximum IR sensitivity. Early flight data validates the operation of the system. In the South Atlantic Anomaly a typical reduction in pulse generated system noise of two orders of magnitude is being obtained with this circuit.
Arentz R. F.
Downey Charles H.
Emming Jan G.
Long C. E.
Smeins Larry G.
No associations
LandOfFree
Pulse circumvention circuit for the Infrared Astronomical Satellite telescope does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Pulse circumvention circuit for the Infrared Astronomical Satellite telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse circumvention circuit for the Infrared Astronomical Satellite telescope will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-938672