Abstract
Ground Noise SAR exploits either special antenna with pattern synthesis or Tx/Rx antenna motion along a rail path. In both cases, the azimuth resolution is limited by the available/achievable length of Tx/Rx physical antenna motion. However, in many applications it may be not sufficient to provide the required azimuth resolution. At the same time, a sub-meter range resolution is readily achievable with nowadays fast ADCs and wideband sources of random signals. We consider a special operational mode for enhancement of the azimuth resolution via implementing of alternation of SAR and interferometric modes to enhance azimuth resolution (when a target was detected with a high range resolution) via coherent processing of the data obtained from different Rx units of bistatic Ground Noise SAR.
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