基于全去斜率接收技术的雷达距离成像

Range Image of Radar Based on Dechirping Receive Technology

针对掠海环境条件下目标高分辨率距离成像的问题,提出了基于全去斜率接收技术的雷达距离成像方法。该方法将全去斜率接收处理技术与目标运动速度补偿相结合,并综合采用了DSPA数字脉压和Hamming加权算法,不仅缩减了回波信号带宽,减少了信号处理工作量,而且消除了目标速度对回波相位的影响,降低了目标距离副瓣电平。经外场动态实测,实现了对海上船只的一维距离成像。试验结果验证了方法的可行性与实用性。该方法为外场雷达目标一维距离成像测量研究提供了有效途径。

The range image with high resolution of sea-skimming target is a very important research direction.This paper presents a method of radar range imaging based on dechirping receive technology.This method combined the dechirping receive technology with speed of target motion compensation.By using DSPA digital pulse compression and Hamming weighting algorithm,the method may not only reduce bandwidth of return signal,but also decrease sidelobe level of target range.Combined with radar outdoor dynamic measurement,one dimension range imaging of ships is obtained.The measured result shown that this method can provide an effective way for dimension range imaging of outdoor radar target.