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In the aperture synthetic radiometer system, the calibration of phase error plays an important role in improving the image quality. Errors of both antenna and receiving channel will cause aperture synthetic phase error in each sub-aperture, so arouse deterioration in image quality. An in-orbit external calibration method for aperture synthetic radiometer(More)
Spaced-based radar (SBR) systems have plenty of advantages, and it can provide both ground-moving-target indicator (GMTI) and airborne-moving-target indicator(AMT) data. The distributed arrays are attractive to SBR because they provide a high angular resolution with a long baseline. Also, they can inherently adopt small identical independent spacecrafts as(More)
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