A Comparative Study Of Adaptive Cancellation Techniques In Radar Signal Processor

In this thesis, several methods of calculating adaptive clutter cancellation filter weights are introduced, and a series of comparisons are made from the aspects of the improvement factor of AMTI, computation burden, application to multiple-clutter environment and staggered-PRF operation mode. In this thesis, the emphasis is put on the practical realization of Adaptive Clutter Cancellation. Based upon the development of the moving target processor, some practical problems we met are discussed, such as the method of estimating the Doppler frequency center of moving clutter, etc. especially, a new method of phase-rectification is brought forward, to which the corresponding simulation is presented as well. Thus, a practical method of realizing adaptive clutter cancellation in the case of fewer radar beams emitted is brought forward. Finally, based on the implementation of adaptive clutter cancellation in certain radar system, the moving target processing system realized by 6 ADSP21062s is introduced.