摘要
载机与空中目标间的相对高机动,会引起机载脉冲多普勒雷达长时间相参积累时目标在频率上跨越多个多普勒滤波器单元,导致目标的相参积累能量降低;利用目标航迹预测加速度或载机自身加速度,在目标回波的距离频域进行线性相位补偿的方法,实现了机动目标的速度走动补偿,有效地提高了目标相参积累信噪比;该方法显著改善了雷达对机动目标的检测性能,具有运算量小、易于工程实时处理等特点;仿真数据验证了理论分析的结果和算法的有效性。
Relatively Maneuvering between the aircraft and the air targets, causing airborne pulse Doppler radar target cross multiple frequency Doppler filter units in long--time coherent accumulation process, resulting in the target coherent accumulation energy reduction. Using the aircraft or track prediction acceleration, the target echo frequency domain linear phase compensation method was proposed to achieve high mobility targets velocity compensation and improve the SNR of coherent accumulation targets. This method significantly improves the radar detection performance of maneuvering targets, has the characteristics of small amount of computation, easy real--time processing etc.. Simulation data verified the theoretical analysis results and the validity of the algorithm.
出处
《计算机测量与控制》
2015年第3期870-872,共3页
Computer Measurement &Control
关键词
脉冲多普勒雷达
长时间相参积累
速度走动补偿
机动目标
pulse-- Doppler radar
long-- time coherent integration
velocity migration compensation
maneuvering target
