瞬时相关积分法及其在线谱检测中的应用

Instantaneous Correlation Integral Algorithm and Application in the Detection of the Line Spectrum

在Wigner-Vill变换的基础上,推导出一种线谱检测新方法———瞬时相关积分算法。文中阐述了瞬时积分法的基本原理,从理论上分析了在目标高速运动条件下该算法对线谱分量和噪声分量的影响,并且分析了该算法的处理增益,进行了仿真分析和湖上试验验证。试验结果表明瞬时积分相关算法能够有效地消除多普勒影响,消除交叉干扰项,可以广泛应用于对线谱信号的检测和估计。

A new method of the line spectrum detection was derived from the Wigner-Vill transform.The principle of the instantaneous correlation integral algorithm was illustrated.The effect of the algorithm on the line spectrum component and noise component under high speed movement condition was analyzed theoretically.The process gain of the algorithm was analyzed.The results of simulation and lake trial proved that the instantaneous correlation integral algorithm can eliminate the effect of Doppler and the cross-term interference effectively.The algorithm can be applied to the detection and estimation of the line spectrum widely.