声纳技术在海底地形辅助导航中的应用

Using Sonar in Terrain-Aided Underwater Navigation

精确导航是潜艇和其它水下航行器长距离水下安全航行的基本保障。目前,潜艇常用的船位推测法、惯性导航系统都存在定位误差随时间积累的特性。因此,必须定期地用外部信息对其进行校准。提出采用多波束声纳实时获取海底地形再与海底地形数据库的地形数据进行相关匹配,并通过小波快速迭代求精匹配算法,得到当前潜艇位置信息,将其作为参考点对惯性导航系统误差进行修正。实验结果显示,海底地形辅助导航匹配速度快,使导航精度明显提高。

Underwater accurately navigation is a major problem for a totally Submarines Submarines navigation of Submarines is currently based upon dead reckoning and inertial navigation, bath methods rather inaccurate with increasing time Navigation using computerized information about the bottom terrain will solve most of the above problem This paper has demonstrated that it is possible for submarines to accurately navigation in a previously mapped area by measuring the bottom terrain with multibeam Sonar