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In the SAR system, some closed iso-range or iso-doppler contours in the area illuminated by the transmitter mean the ambiguity of some scattering points. However, whether the iso-range or iso-doppler contours will be closed is closely related with the extremum points of range-surface or doppler-surface. Therefore in the paper the extremum points of range-surface and doppler-surface for airborne bistatic...
Ambiguous area of bistatic SAR will vary with the change of bistatic geometrical configuration and is difficult to be predetermined. Ambiguous scattering points in the scene can be found through observing the momentary image grid formed by iso-range contours and iso-doppler contours, but it is an attended method which is invalid in many unattended occasions. In the paper the problem has been converted...
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