A global search and rescue concept using synthetic aperture radar and passive user targets
W. E. Sivertson, Langley Research Center, United States. National Aeronautics and Space Administration
U.S. National Aeronautics and Space Administration, 1976 - Technology & Engineering - 29 pages
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Airborne Imaging Radars aircraft flight test all-weather assigned center frequency basic concept basic search boresight alinement circular trihedral corner day or night decibels densitometer depression angle distress target Earth orbit ERIM evaluate the basic Fourier function of radar geometric configuration global search ground swath H-H and H-V horizontal Individual reflectors intensity L-band radar L-pattern Langley Research Center Luneberg lens manmade targets matched filter Merritt Island meters misalinement NASA object spectrum optical processor position radar cross section radar signal recording radar system recording assigned center reflectors in conjunction rescue concept rescue operation rescue system resolution return-signal search and rescue shown in figure signal film signal recording assigned signal-to-noise signal-to-noise ratio spatial filter synthetic aperture radar target cross section target groups target radar cross target reflector terrain Test results test was conducted tethered Theoretical total radar image transmitter power triangular trihedral corner trihedral corner reflector X-band