基于ADSP-TS201雷达通用处理模块的宽带系统误差补偿实现

Realization of Systematic Errors Compensation of Wideband Based on ADSP-TS201

在宽带雷达中,常采用去斜方法进行脉冲压缩来获得目标一维距离像,由于多种系统误差存在,使得脉冲压缩后的压缩脉冲旁瓣升高,主瓣展宽,影响了成像质量。因此,要获得满意的一维像需要对这些误差进行补偿。本文介绍了以AD I公司的新一代高性能TigerSHARC处理器ADSP-TS201为核心处理器,结合X ilinx公司VIRTEX-IIPRO系列FPGA芯片设计的4片ADSP-TS201雷达通用模块,给出了基于此模块的工程可实现的系统误差补偿方法,结合某宽带雷达的实际数据,验证了此方法的工程可实现性,工程上取得了明显效果,并在某雷达中取得了一定应用。

In the wideband radar system that can obtain one dimentional range image of the target by using STRECTH pulse compression, all kinds of system errors leading to the rise of the side lobe and the broadening of the main lobe degrade the images. So it is necessary to compensate these errors. This paper introduces a radar universal processing module which adopts 4 chips of ADSP-TS201 which is made by ADI as central proces- sor and one chip of VIRTEX-IIPRO series FPGA as coprocess. Based on radar universal processing module, a method of systematic compensation is given. This paper presents a engineering realization of a wideband radar. This method shows a good effect and is used in a certain radar.