The imaging principle and method based on distributed multi-channel radars

We propose the imaging principle based on distributed multi-channel radars, in which multiple sparse transmitters and receivers are appropriately arranged according to the request about wave-number samples. The imaging radar can reconstruct target two-dimensional reflectivity function by coherent processing the echo signals in multi-channels. Moreover, large antennas are not required, and movement compensation need not be performed. For the distributed radars with the given distribution of transmitters and receivers, the phase errors are analyzed and the coherent processing methods in ISAR technique are applied to image targets. Finally the simulations are given to validate the imaging performance.