联合GPS与二元水声定位系统的目标定位方法

Combined Positioning Method of GPS and Two-Element Underwater Acoustic Position System

GPS是主要的陆上定位系统,二元水声定位系统是一种常用于水下的定位系统,二者结合可以确定水下目标的经纬度.本文从原理上对联合定位解算方法进行了推导,并进行了误差分析.指出联合定位解算过程中的特殊事项,得出二元水声定位系统的误差空间分布特性,分析了地球半径和相对偏角对联合定位结果的影响.

GPS is the main position system in the land, two-element underwater acoustic position system is an familiar underwater position system. The latitude and longitude of underwater target can be confirmed with a combined system. The solution method of joint positioning is deduced in principle, and the error of the system is analyzed. Several pecial matters is point out in the combined positioning calculating and error distributing character is got on space of two-element underwater acoustic position system, in the end, the influence of earth radius and relative deviation on position result is analyzed.