Communications: directive radio wave systems and devices (e.g. – With particular circuit – Display
Patent
1990-05-31
1992-07-21
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Display
342 25, 343705, G01S 1389, H01Q 128
Patent
active
051326930
ABSTRACT:
An imaging radar system for an aircraft includes four transmit antennas, connected to a central transmitter, and four receive antenna arrays for respectively receiving reflections of signals transmitted by the transmit antennas. A receiver circuit, associated with each antenna element of each receive antenna array, heterodynes the received signal to yield a resultant signal and combines the resultant signal with a reference signal to yield an interference grating signal. The grating signal of each receiver circuit is digitized and provided to a central processing unit that performs a spatial Fourier transform on the grating signals to determine angles of reflecting objects relative to each receive array.
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Barron Jr. Gilberto
The Boeing Company
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