基于时分模式的水下自主定位方法研究

A Study on an Underwater Autonomous Positioning Method based on TDM

为了提高水下声学定位系统的精度,提出一种基于时分模式的水下自主定位系统.该系统由1个控制中心和若干漂浮式基站组成,控制中心用于发布命令和信息处理,漂浮式基站负责采集定位信标信号和测试数据.采用完全水声的自主定位原理、TDMA与CDMA相结合的通信技术,并且利用TOA定位原理实现系统的定位.实验表明,该方法对于克服水环境对定位的影响、提高定位精度是有效的.

To improve the accuracy of underwater acoustic positioning system,this paper presents a underwater autonomous positioning method based on TDM.The system consists of a control center and several floating base stations.The control center issues an order and information processing.The floating base stations are responsible for collecting locator beacon signals and test data.The system adopts a underwater autonomous positioning principle,TDMA and CDMA combined communication technology and utilize TOA positioning principle for system positioning.The experiments show that the method is effective in overcoming the impact of the water environment and improve positioning accuracy.