基于原子干涉技术的水下重力辅助导航研究展望

重力辅助惯性导航是当前水下潜航器导航定位研究的热点和前沿问题，有望成为下一代水下高精度导航系统发展的重要方向。首先，介绍了水下重力信息对于校正惯导系统误差的重要性，阐述了水下重力辅助惯性导航的基本原理与技术内涵；然后，从无图匹配、有图匹配等不同发展阶段，总结了基于传统相对重力仪的水下重力辅助导航的研究现状及发展趋势；进一步分析了下一代水下自主导航系统对高精度绝对重力测量技术的需求，梳理并讨论了基于原子干涉重力测量技术的最新发展及应用状况，展望了原子干涉重力测量技术在水下惯性导航领域的应用前景并总结了仍需解决的关键技术；最后，给出了我国重力辅助导航研究存在的不足及发展建议。

Research prospect of underwater gravity-assisted navigation based on atomic interference technology

Gravity assisted underwater inertial navigation has been a hot and cutting-edge issue in the research of underwater vehicle navigation and positioning in recent years, which is expected to become an important direction for the development of the next generation of high-precision underwater navigation systems. Firstly, the importance of underwater gravity information for correcting inertial navigation system error is introduced, and the basic principles and technical connotations of underwater gravity assisted inertial navigation are elaborated. Then, the research status and development trend of underwater gravity assisted navigation based on traditional relative gravimeter are summarized from different development stages such as unmapped matching and mapped matching. Furthermore, the demand of high-precision absolute gravimetry technology for next-generation underwater autonomous navigation system is analyzed, and the latest development and application status of atomic interferometric gravity measurement technology are reviewed and discussed. The application prospects of atomic interference gravity measurement technology in the field of underwater inertial navigation are forecasted and the key technologies that still need to be solved are summarized. Finally, the shortcomings and development suggestions of gravity assisted navigation research in China are given.