Communications: directive radio wave systems and devices (e.g. – Synthetic aperture radar
Patent
1990-07-13
1992-11-03
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Synthetic aperture radar
342160, G01S 1390
Patent
active
051609320
ABSTRACT:
An over-the-horizon, synthetic aperture radar (OTHSAR) system (10) is disclosed. The OTHSAR system is used to locate moving objects (14) at long distances in response to modulated high-frequency radiation reflected by the objects and distinguishes the objects from stationary clutter (16) that also reflects the radiation. Specifically, a central processor (26) synthesizes information received from an antenna (18) and receiver (22) over an interval of time t.sub.s to enhance azimuth resolution. Although ambiguous Doppler information is likely to be received from the moving object and the stationary clutter, the antenna is selected to have a real antenna beam that resolves the ambiguous data, ensuring that conflicting clutter data is eliminated.
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Schleher, "Introduction to Electronic Warfare", Artech House, 1986, pp. 295-299.
Barron Jr. Gilberto
The Boeing Company
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