摘要
论述了雷达脉冲压缩技术的原理以及采用数字信号处理芯片ADSP TSxxx实现雷达脉冲压缩的方法。介绍了用可编程逻辑器件完成数字信号的正交变换 ,用ADSP TSxxx浮点数字处理器实现高性能、高精度的数字压缩、用堑域快速卷积法实现脉冲压缩 ,并讨论了算法FFT点数的选择问题。给出了相应的硬件框图、软件流程、算法实现及优化。实践表明 ,该方法具有快速稳定、结构简单、性能价格比较高等特点。
In this paper, after the introduction of the principle of real time pulse compression in radar, the adoptation of the newest chip ADSP TSxxx to realize the real time pulse compression and the adoptation of CPLD to realize orthonormal transform are introduced. High performance and accuracy of digital compression is achieved by ADSP TSxxx point digital signal processor. An algorithm of FFT in frequency domain is used and the selection of FFT points is discussed. Then the block diagram of hardware, the algorithm implementation and optimization, the flow diagram and the data of the result are presented .The fast speed and high stability, simple construction, high ratio between performance and price are exhibited in practice. It is the development trend of radar in our county.
出处
《电子工程师》
2004年第4期1-3,共3页
Electronic Engineer
