Iteration algorithm of revising sound velocity for long baseline acoustic positioning system

The algorithm for long baseline(LBL) positioning system is mainly based on the geometry theory.The commonly used method is directly to solve equations based on geometry principle,so as to obtain the approximate so-lution of the target location.Through geometric analysis of the long baseline positioning system,the work on choosing different geometric intersection as the target positions,comparing the target positioning accuracy of the approximate solution and finding out the optimal solution is done,and meanwhile,an iteration algorithm of revising the sound ve-locity for long baseline positioning system is proposed in this paper.This revised algorithm not only improves the posi-tioning accuracy of the target point array for synchronous work,but also lowers the computational complexity,which makes it easy to use.At last,the algorithm is proved to be effective through simulation analysis.