虚拟极区技术在惯性系统极区导航中的应用研究

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• 英文论文题名：Study on application of virtual polar technique in inertial navigation systems polar sailing
• 论文作者：李琳 ; 张海峰
• 英文论文作者：LI Lin ; ZHANG Hai-feng ; Tianjin Navigation Instruments Research Institute
• 年：2016
• 作者机构：天津航海仪器研究所;
• 论文关键词：惯性导航系统 ; 极区导航 ; 虚拟极区 ; 系统试验验证
• 英文论文关键词：inertial navigation systems ; polar navigation ; virtual polar ; system experimental verification
• 会议召开时间：2016-09-27
• 会议录名称：2016年光学陀螺及系统技术发展与应用研讨会论文集
• 语种：中文
• 分类号：U666.12
• 学会代码：ZGGZ
• 会议名称：2016年光学陀螺及系统技术发展与应用研讨会
• 会议地点：中国江西九江
• 主办单位：中国惯性技术学会
• 学会名称：中国惯性技术学会
• 页数：5
• 文件大小：746k
• 原文格式：D
• 会议级别：全国

摘要

针对如何在低纬度地区对极区导航算法进行系统试验验证的问题,提出了利用虚拟极区技术的解决办法。在分析了引起极区导航定向和定位困难原因的基础上,对地球表面的经纬度进行了重新定义。选定地球表面某一位置点作为虚拟极点,将常规地球坐标系经过两次坐标旋转得到虚拟地球坐标系,进而得到虚拟地理坐标系和虚拟格网坐标系,并推导了虚拟坐标系和常规坐标系位置、速度、姿态等导航参数的变换公式。最后,以游移方位导航编排为解算内核的极区间接格网导航算法为例,利用虚拟极区技术,进行了虚拟极区的仿真和单轴激光捷联惯导系统极海上试验数据的离线导航解算。理论分析和试验结果表明:通过虚拟极区技术,能够模拟出因经线汇聚成一点给导航系统定位定向带来的困难,从而完成极区导航算法的系统试验验证。因此,虚拟极区技术,解决了低纬度地区极区导航算法的系统试验验证问题,是节约研究成本和缩短研究周期的有效途径。
To solve the problem of System experimental verification of polar navigation algorithm in low latitude region, a method of Virtual Polar Technique is proposed. On the base of analysis of reasons which making polar orienting and locating more difficult than usual, the longitude-latitude coordinates on the surface of the earth are redefined. One dot on the surface of the earth is selected as virtual arctic pole. Virtual earth frame is obtained from normal earth frame by two frame circumrotate. Virtual geography frame and virtual grid frame are constructed. The parameter transformations formulas from normal frame to virtual frame for position, velocity and attitude are deduced. At last, as an example of the indirect grid navigation calculating method based on wander azimuth mechanization, the simulating and offline navigation calculating which data come from ship sailing of single-axis rotation modulation SINS are done by making use of virtual polar technique. Theoretical analysis and simulation results show that problem which making polar orienting and locating difficult caused by the extreme convergence of the meridians can be simulate making use of virtual polar technique, and system experimental verification of polar navigation algorithm can be completed in virtual polar. Consequently, the problem of System experimental verification of polar navigation algorithm in low latitude region can be settled by virtual polar technique. It's an available approach of saving research cost and shorten research period.

引文

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