This paper describes the design and realization of the azimuth preprocess in the real-time imaging processor of SAR with programmable logic device by the method of sub-aperture using band-pass filter.

该文讨论了在合成孔径雷达实时成像处理器中，采用子孔径带通滤波成像处理方法的方位预处理的设计，构造了一种用大规模可编程逻辑器件实现方位预处理的电路结构。

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The design principle and process of digital programmable filter based on MAX262 in automatic detection system, and its circuits and program are introduced.

介绍了自动测试系统中基于MAX262的程控滤波器的设计原理及流程，给出了具体电路及程序。

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In this paper, FPGA is used to design FIR filter in the purpose of filtering the noise of the echo because of the advantage of FPGA in programmable fast.

因此本文利用FPGA的高速可编程的特点进行fir滤波器的设计来对探测信号中的干扰加以排除。

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