基于垂直面阵水下定位的算法研究

当前的DGPS水下立体定位是基于水面上的基线面阵双曲线定位系统，对于信号接收器位于同一个垂直平面内时并没有给出具体的定位模型。利用垂直面阵上信号接收机的几何关系自定义坐标系，通过测边网解算方法计算出它们在所定义的坐标系中的坐标。水下声源发射器发射信号，经过一段时间后，各信号接收器接收到信号，利用示波器和信号处理技术得到各信号接收器接收时刻的时间差。通过建立距离交汇模式的定位模型，解算出水下声源发射器的三维坐标。结合在湖北清江的多目标水声信号识别与检测试验，根据实际测得的相关数据解算出水下目标发射器的坐标。由于此定位方法不需要GPS精密时钟，节约了定位成本。适合船体携带，操作方便。为水下目标定位提供了一个新的方法。

Research on Arithmetic of Underwater Position in Vertical Plane

Underwater GPS Position System is based on the principle of hyperbola intersection on the water. When the signal receivers are in a vertical plane, it does not give the poison model. In this article, using distance intersection builds poison model. First use ge- ometry connection between each receiver to establish user-defined coordinate system. Then using the method of trilateration net calculates their coordinates in the coordinate system. The underwater sonar pinger transmits a signal, after a few seconds every receivers will receive the signals, with the oscillograph and signal disposal technology can obtain difference of the receive time between each receivers. Through establishing distance intersection model may compute the pinger＇s three-dimensional coordinate. This article introduces an experiment at Qingjiang in Hubei, on the basis of surveying data calculating the pinger＇s coordinate. On account of this method does not need the precision clock. It saves cost of position. And it is convenience for ship to take and easily to operate. Also it provides a new method mode for underwater positioning.