Study Of Radar Clutter Cancellation And Realized By DSP

This paper is mainly concern about the technology of radar moving target indication of phased array radar. Some properties of clutters and some methods of clutter rejection including ground and moving clutter rejection are discussed at first. In this thesis, the emphasis is put on the moving clutter rejection, which adopts the means of adaptive moving target indication (AMT1). Some algorithms of AMTI are introduced in the paper. In certain phased array radar, there are only several pluses in a radar beam, which makes against clutter cancellation. The four-pulse canceler is commonly adopted in this instance. We bring forward some schemes of clutter rejection to improve performance of radar system. And some emulational results are given. These improved methods consist amplitude and phase compensate of fixed cancellation. At last we introduce a processing method of radar moving target indication all by ADSP21062. It is simple in structure, small in size and can be easily handled. It also can enhance system stability. And it is successfully adopted in certain phased array radar. It has high ratio of performance over price.