弹道中段目标RCS周期特性及其估计方法

RCS Periodicity of Ballistic Target in Midcourse and Its Estimation Algorithms

分析了弹头目标的RCS周期特性,指出了传统频域分析方法的不足,提出了一种新的RCS周期估计方法。通过合成循环平均幅度差函数(CAMDF)和循环自相关函数(CAUTOC),有效克服了传统频域估计方法的不足,且具有优良的抗噪性能。仿真实验结果表明该方法能明显改善RCS周期估计的精确性和稳定性。

After RCS periodicity signature of warhead analyzed,the weaknesses of estimation algorithms in frequency domain are pointed out and a new algorithm is proposed,which combines circle autocorrelation(CAUTOC) with circle average magnitude difference function(CAMDF).The new algorithm conquers the defect of conventional methods,especially in which it is more robust in low SNR environment.Simulation result shows that proposed method has gained greatly higher accuracy and stability than the former methods.