改进型单频非遍历值域姿态测量算法  

Improved non-exhaustive zone attitude determination algorithm for single frequency

作　　者：权源 赵修斌[2] 庞春雷[2] 王勇[2] 伍劭实[2] 吴洪涛 REN Qinghua;XU Bingzheng;WANG Guisheng;HU Shijun;LIU Yang;QUAN Yuan;ZHAO Xiubin;PANG Chunlei;WANG Yong;WU Shaoshi;WU Hongtao(Air Force Communication NCO Academy, Dalian 116000, P.R.China;Information and Navigation College,Air Force Engineering University, Xi’an 710077, P.R.China;95129 Troops of PLA,Kaifeng 475000,P.R.China)

机构地区：[1]空军通信士官学校,辽宁大连116000 [2]空军工程大学信息与导航学院,西安710077 [3]95129部队,河南开封475000

出　　处：《重庆邮电大学学报（自然科学版）》2018年第5期686-692,共7页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：国家自然科学基金(61601506);

摘　　要：非遍历值域搜索算法利用二维模糊度搜索范围压缩了姿态角搜索空间,由于二维模糊度搜索空间较大,造成压缩姿态角搜索空间效率较低,提出了一种采用多约束条件以提高压缩姿态角搜索空间效率的方法。选取仰角最高的4颗卫星作为主星,采用最小二乘搜索算法利用单个历元观测数据确定三维模糊度搜索空间,结合基线长度及低成本微机电系统(micro electrical mechanical system,MEMS)提供的俯仰角信息对三维模糊度搜索空间进行筛选,取仰角最高的3颗卫星构成二维模糊度搜索空间,将其代入搜索模型解算整周模糊度候选值,采用残差比例检验法进行模糊度固定。试验结果表明,相比于原算法,姿态角搜索数目由576组降至8组,残差比峰值由16增至1 279,固定所需时长从35 s缩短至单个历元。Non-exhaustive zone attitude determination algorithm uses planar ambiguity search scope to compress the attitude angle searching space. However, the large planar ambiguity search space results in low compressed attitude angle searching efficiency. A method based on multiple constraints was proposed to improve the compression attitude angle search efficiency. Firstly, four satellites with the highest elevation angle were chosen as the main stars. Three-dimensional ambiguity search space was determined through using least squares search on single epoch observation. The three-dimensional ambiguity space was screened based on baseline length and pitch angle information provided by micro electrical mechanical system. Then three satellites with the highest elevation angle were selected to form a planar ambiguity search space. The ambiguity candidate solution was obtained by substituting them into the search model, Lastly, the ambiguity is fixed by using the ratio test method. It is demonstrated that the number of angle search space was reduced from 576 to 8 by the proposed algorithm, while the maximum ratio of the residual error was increased from 16 to 1 279. Moreover, the ambiguity fixing time was shortened from 35 s to 1 s.

关 键 词：最小二乘搜索法 微机电系统(MEMS) 整周模糊度 单历元 姿态测量 

分 类 号：TN967.1[电子电信—信号与信息处理]