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Ground radar detection of meteoroids in spaceA special test to lower the detection threshold for satellite fragments potentially dangerous to spacecraft was carried out by NORAD for NASA, using modified radar software. The Perimeter Acquisition Radar Attack Characterization System, a large, planar face, phased radar, operates at a nominal 430 MHz and produces 120 pulses per second, 45 of which were dedicated to search. In a time period of 8.4 hours of observations over three days, over 6000 objects were detected and tracked of which 37 were determined to have velocities greater than escape velocity. Six of these were larger objects with radar cross sections greater than 0.1 sq m and were probably orbiting satellites. A table gives the flux of both observed groups.
Document ID
Document Type
Conference Proceedings
Kessler, D. J. (NASA Johnson Space Center Houston, Tex., United States)
Landry, P. M. (North American Air Defense Command Peterson AFB, CO, United States)
Gabbard, J. R. (USAF, North American Air Defense Command, Peterson AFB Colo., United States)
Moran, J. L. T. (Bell Telephone Laboratories, Inc. Whippany, N.J., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Subject Category
Meeting Information
Symposium on Solid particles in the solar system(Ottawa)
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