摘要
雷达系统在检测运动目标的过程中,运动目标的回波信号具有一定的多普勒频移,为了消除该多普勒频移造成的雷达测距误差,需要在脉冲压缩处理前对目标回波信号进行运动补偿处理。基于上述目的,对运动补偿原理进行了详细阐述,并采用MATLAB对运动补偿算法进行仿真及分析,重点提出了运动补偿算法的可编程门阵列(FP-GA)实现方案。经过分析及验证,FPGA实现运动补偿处理可成功消除运动目标多普勒频移带来的雷达测距误差。该方案具有实时性高、工程易实现的优点。
In the process of radar detecting the moving target,the echo signal of moving target has a certain Doppler frequency shift.In order to eliminate the radar ranging error caused by the Doppler frequency shift,it is necessary to carry out the motion compensation processing on the target echo signal before pulse compression processing.Based on the above purpose,the motion compensation principle is elaborated,and the motion compensation algorithm is simulated and analyzed by MAT-LAB,and the field programmable gate array(FPGA)implementation scheme of the motion com-pensation algorithm is focused on.Through analysis and verification,the motion compensation pro-cessing based on FPGA can successfully eliminate the radar ranging error caused by the Doppler shift of the moving target.Meanwhile,the scheme has the advantages of high realtime performance and easy implementation of engineering.
作者
杨敏
YANG Min(The 20 Research Institute of CETC,Xi’an 710068,China)
出处
《舰船电子对抗》
2023年第4期76-79,共4页
Shipboard Electronic Countermeasure
关键词
现场可编程门阵列
多普勒频移
运动补偿
field programmable gate array
Doppler frequency shift
motion compensation
