Structure resonant radar detection apparatus and method
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United States of America Patent
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-
Jan 30, 1990
Grant Date -
N/A
app pub date -
Jan 14, 1986
filing date -
Jan 14, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Certain man-made structures located in a complex background, such as railroad ties, telephone poles, and fences are detected by a flying craft, using a low powered structure resonant radar system. The radar system transmits a radar signal which includes wavelengths of the same order of magnitude as twice the spacing of the elements of the man-made structure or grating multiples thereof, and transmits them in a plurality of different directions and frequencies. Reflections of the transmitted radar are received and structural resonance backscatter is detected wherein the backscatter amplitude at the resonant frequency is much higher than that at adjacent frequencies or that of the clutter background, indicating the presence of the search-for type of structure. The bright structural resonance backscatter can then be exploted by the structure resonant radar for guidance, homing, etc.
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