Communications: directive radio wave systems and devices (e.g. – Synthetic aperture radar
Reexamination Certificate
2005-11-29
2005-11-29
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Synthetic aperture radar
C342S02500R, C342S02500R, C342S059000, C342S089000, C342S090000, C342S175000, C342S176000, C342S179000, C342S195000, C342S196000, C342S357490, C342S357490
Reexamination Certificate
active
06970128
ABSTRACT:
A see-through-the-wall (STTW) imaging system uses a plurality of geographically separated positioning transmitters to transmit non-interfering positioning signals. An imaging unit generates a synthetic aperture image of a target by compensating for complex movement of the imaging unit using the positioning signals. The imaging unit includes forward and aft positioning antennas to receive at least three of the positioning signals, an imaging antenna to receive radar return signals from the target, and a signal processor to compensate the return signals for position and orientation of the imaging antenna using the positioning signals. The signal processor may construct the synthetic aperture image of a target from the compensated return signals as the imaging unit is moved with respect to the target. The signal processor may determine the position and the orientation of the imaging unit by measuring a relative phase of the positioning signals.
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Adams Vinh N.
Beylor Michael R.
Dwelly Wesley H.
Alkov Leonard A.
Finn Thomas J.
Gregory Bernarr E.
Raytheon Company
Vick Karl A.
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