天海一体化水下重力辅助导航研究进展

水下航行器精确导航在海洋利用和开发过程中发挥了重要作用。关于抑制水下导航误差随时间累积的问题,进行了详细阐述和分析:简述了惯性器件的发展历程;详细对比了各导航系统的优劣性,着重介绍了国内外重力辅助导航研究现状,分析了针对目前水下航行器高精度导航的需求,以及全球海洋重力基准图空间分辨率不足的科学难题;提出了通过GNSS-R测高星座获得高空间分辨率和高精度全球海洋重力基准图的思路及技术路线,以期提高水下重力辅助导航精度。

Research progress of the underwater gravity-aided navigation based on the information of aerospace-marine integration

The accurate navigation of the underwater vehicle plays an important role in the process of the ocean utilization and development. The problem of restraining the accumulation errors of the underwater navigation over time was discussed and analyzed in detail. Firstly, the development history of the inertial devices was briefly described. Secondly, the advantages and disadvantages of each navigation system were compared in detail, the research status of the gravity-aided navigation at home and abroad were introduced, and the demand for the high-precision navigation of the underwater vehicles and the scientific problems of insufficient spatial resolution of the global marine gravity reference map were analyzed. Finally, the idea and technical route of obtaining the high spatial resolution and high precision global marine gravity reference map by GNSS-R altimetry constellations are proposed in order to improve the accuracy of the underwater gravity-aided navigation.