Moving Target Indication for Multichannel FMCW SAR via Iterative Adaptive Approach

Inhalt:
Frequency-Modulated Continuous-Wave Synthetic Aperture Radar (FMCW SAR) is a compact promising remote imaging sensor. It has an intrinsic advantage of multichannel processing, which allows for effective clutter suppression and high resolution slow moving target indication. To obviate the need of secondary data and to obtain high resolution spectrum estimation, a weighted least squares based iterative adaptive approach (IAA) is introduced to FMCW SAR. Via modified two-dimensional IAA, the targets can be clearly and accurately indicated in the angle-Doppler image.