机载雷达长相参积累机动目标速度补偿方法

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。

Velocity Compensation for Long-time Coherent Integration Maneuvering Target in Airborne Radar

Relatively Maneuvering between the aircraftS and the air targets, causing airborne pulse Doppler radar target cross multiple frequency Doppler filter units in long-time coherent accumulation process, resulting the targetScoherent 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 theSSNR of coherent accumulation targets. This method significantly improves the radar detection performance of maneuvering targets, has the characteristics ofSsmall amount of computation,SeasySreal-time processingSetc.. Simulation data verified the theoretical analysis results and the validity of the algorithm.