GPS与基于海流数据库的推算船位的数据融合

Data Fusion Between GPS and Calculation of Position Based Ocean Database

当前 ,潜艇在水下可获得的导航信息十分有限。因此 ,如何利用现有的装备来提高水下导航的精度一直是水下导航界关注的热点。该文构造了基于GPS的水面导航信息融合子系统和基于海流数据库的水下导航信息融合子系统。对两种子系统的联合滤波进行探讨 ,并利用联合滤波来对水下导航信息融合子系统进行修正以提高水下导航信息的精度。经过大量的计算机仿真实验证明 ,该方法十分有效 ,大大提高了水下导航的精度和系统的稳定性。

In the present, submarine can not receive enough navigation information. The problem how to improve the precision of underwater positioning through the existing equipments is always paid great attention in the area of navigation, especially in the area of underwater navigation. The paper constitutes a surface data fusion subsystem based on GPS and a underwater data fusion subsystem based on ocean database. The paper also analyzes associated filter between the two subsystems. The results of associated filter can be used in correcting navigation information. After a lot of computer simulations, it proves that the method is a effective way to improve the precision of underwater navigation.