Detection, location and imaging of fast moving targets using multi-frequency antenna array SAR

An antenna array approach is presented, where transmitting single wavelength signals are generalized to transmitting multiple wavelength signals. It is shown that, using multi-frequency antenna array SAR, not only the clutters can be suppressed but also locations of both slow and fast moving targets can be accurately estimated. A robust Chinese Remainder Theorem (CRT) is developed and used for the location of fast and slowly moving targets. Simulations of SAR imaging of ground moving targets are presented to illustrate the effectiveness of the multifrequency antenna array SAR imaging algorithm.