声纳浮标多普勒最接近法的一种新算法

New Algorithm for Sonobuoy Doppler-CPA

在声纳浮标多普勒最接近点方法基础上,提出一种新算法。与原算法相比:(1)新算法推导出一个无误差的求解公式,而原算法是一个近似公式;(2)新算法在使用上较原方法更为方便,公式需要的输入在实际中更容易得到。比较了新算法和原算法的关系,原算法主要使用测量两个关于最接近点对称的多普勒频移及最接近点的频率变化导数;新方法在使用多普勒频移的同时还利用了测量点的时间信息。最后给出了仿真结果,表明新算法可以精确求解目标的运动参数。

A new algorithm based on sonobuoy Doppler shift CPA （closest point of approach） was proposed. Compared with the original, the new algorithm has two characteristics as follows： （1） the new algorithm is an errorless formula, compared to original algorithm an approximate one （2） new algorithm is more convenient in used and formula input is easier to get. The relationship between original and new algorithm was compared. The original algorithm used two Doppler shifts which was bilateral symmetry about CPA and the derivative of frequency at CPA point. The new algorithm used Doppler shift and time information added. The experiment shows that the new algorithm is an errorless formula.