低频动态合成基阵增益的方向特性

Direction Characteristic of Low-frequency Dynamic Synthesis Array Gain

针对鱼雷多普勒效应导致互相关系数降低的现象,对现有低频远程鱼雷动态合成基阵增益的计算方法进行了修正。在此基础上,研究了阵元数量、时间相关半径、空间相关半径、鱼目距离和阵元间距等基阵动态参数对增益方向特性的影响。总结出相应的规律与结论,为基阵动态参数的优化选择奠定基础。

Aiming at the phenomenon that the cross-correlation coefficient＇s decrease is caused by the torpedo Doppler effect, the current method which is used for computing the dynamic synthesis array gain of low-frequency long-range torpedo is modified. On the basis of it, the influence of the array dynamic parameters on the direction characteristic of the array gain, which includes the number and interval of dynamic synthesis array, the time and space correlation radii of noise and torpedo target range, is studied. Some corresponding rules and conclusions are drawn, and they lay a foundation of the optimization of the array dynamic parameters.