| 基于GPS/DR的GPS滞后时间自适应检测算法 |
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| 引用本文： | 苌永娜,张海.基于GPS/DR的GPS滞后时间自适应检测算法[J].系统仿真技术,2012,8(4):310-314,326. |
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| 作者姓名： | 苌永娜 张海 |
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| 作者单位： | 1. 北京机电工程研究所,北京,100074
2. 北京航空航天大学,北京,100191 |
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| 摘 要： | 针对GPS输出信息的随机延迟特性,基于航位推算(DR)系统惯性器件的实时性与短时高精度,提出了航向差和速度自适应GPS滞后时间检测方法,在此基础上,对GPS和DR数据进行数据对准,提出了自适应GPS滞后时间处理算法。在GPS/DR实际系统中的应用结果表明,本算法能够准确检测出GPS的滞后时间,提高车辆的定位精度。
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| 关 键 词： | 组合导航系统 滞后时间 卡尔曼滤波 全球定位系统/航位推算 |
An Adaptive Algorithm for Detecting the Lag Time of GPS Based on GPS/DR Integrated Navigation Systems |
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| CHANG Yongna
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ZhANG Hai.An Adaptive Algorithm for Detecting the Lag Time of GPS Based on GPS/DR Integrated Navigation Systems[J].System Simulation Technology,2012,8(4):310-314,326. |
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| Authors: | CHANG Yongna ZhANG Hai |
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| Affiliation: | 1. Beijing Electrical and Mechanical Engineering Institute, Beijing 100074, China 2. Beijing University of Astronautics and Aeronautics,Beijing 100191, China) |
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| Abstract: | To solve the problem that the outputs of GPS have uncertion delay, based on the high-precision and real-time output of inertial components, an algorithm for detecting the lag time of GPS adaptively is proposed. Under certain detection conditions, heading difference detection and speed detection are put forword. This algorithm can achieve the lag time of GPS effectively through the verification of actual data . |
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| Keywords: | integrated navigation system lag time Kalman filtering GPS/DR |
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