一种基于重力灯塔导航系统的二维重力匹配导航方法
A Two-dimensional Gravity Matching Navigation Method Based on Gravity Lighthouse Navigation System
肖云 1孙玮萱 2陈垲宁 2张锦柏 3任飞龙4
作者信息
- 1. 西安测绘研究所,西安 710054;地理信息工程国家重点实验室,西安 710054
- 2. 地理信息工程国家重点实验室,西安 710054;长安大学地质工程与测绘学院,西安 710054
- 3. 华中科技大学物理学院地球物理研究所,武汉 430074;华中科技大学精密重力测量国家重大科技基础设施,武汉 430074
- 4. 西安航天天绘数据技术有限公司,西安 710054
- 折叠
摘要
重力匹配导航技术因其无源性、高隐蔽性和强抗干扰性,对于惯性导航系统的误差校正具有不可或缺的价值.然而,传统一维重力匹配算法在实际应用中常因误匹配频发和二维重力底图信息利用不足而受限.针对此问题,提出了重力灯塔导航系统的新概念,该方法以面匹配的方式深入挖掘并利用二维重力底图中的信息.首先,依据多属性决策准则精准筛选出优质的适配区,这些适配区被形象地称为"重力灯塔".随后,通过二维图像匹配算法,实现了基于这些"重力灯塔"的精准导航.仿真实验结果表明,重力灯塔匹配方法得到的距离误差比原惯导误差降低了62.22%,重力灯塔匹配与传统一维匹配方法相比精度提升了 18.58%.该算法在减少惯导误差、提升导航精度方面的显著效果,为惯性导航系统的误差校正提供了一种全新的、富有成效的思路.
Abstract
Gravity-matched navigation technology is of indispensable value for error correction of inertial navigation systems due to its passivity,high stealth and strong anti-jamming properties.However,the traditional one-dimensional gravity matching algorithm is often limited in practical applications due to the frequent occurrence of mis-matching and the under-utilisation of two-dimensional gravity base map information.To address these problems,a new concept of gravity lighthouse navigation system is proposed in this paper,which deeply exploits and utilises the information in two-dimensional gravity basemaps in a face-matching manner.Firstly,high-quality fitness zones are accurately screened based on multi-at-tribute decision criteria,which are figuratively called"gravity lighthouses".Subsequently,accurate navigation based on these"gravity lighthouses"is achieved by a two-dimensional image matching algorithm.The simulation experiment results show that the distance error obtained by the gravity lighthouse matching method is reduced by 62.22%compared to the original inertial navigation error.Compared with traditional one-dimensional matching methods,the accuracy of gravity lighthouse matching has been improved by 18.58%.The significant effect of this algorithm in reducing inertial navigation errors and improving navigation accuracy provides a new and effective approach for error correction in inertial navigation systems.
关键词
重力匹配导航/灯塔/惯性导航/匹配精度/匹配算法Key words
gravity matching navigation/lighthouse/inertial navigation/matching accuracy/matching algorithm引用本文复制引用
出版年
2024
NETL
NSTL
万方数据