Study of 32-Point, Complex FFT in CCD Correlation Tracker

This paper analyses the basic structure of CCD correlation tracker and predicts its necessary and importance in the system for Chinese planetoids going up to outer space. And in order to meet the real_time requirement for the CCD correlation tracker to track image signal in the observation from satellites to the earth, it is necessary that FFT is used to make correlation analysis of images. Through the comparison between different algorithms, this paper researches how to realize 32_point, complex FFT function module by using FPGA in the high speed DSP with an algorithm mixed radix 2 and 4 decimation in frequency architecture.