Interact arithmetic of low-accuracy SINS' initial alignment and GPS orientation measurement with two antennas

被引：2

作者：

Pang, Chunlei ^{[1
]}

Zhao, Xiubin ^{[1
]}

Yu, Yonglin ^{[1
]}

Song, Limei ^{[2
]}

Wang, Zhuxin ^{[3
]}

机构：

[1] Information and Navigation College, Air Force Engineering University, Xi'an

[2] AVIC Xi'an Flight Automatic Control Research Institute, Xi'an

[3] Unit 93033 of PLA, Shenyang

来源：

Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2014年 / 41卷 / 06期

关键词：

GPS; Initial alignment; Interaction; Low-accuracy SINS; Two antenna direction system;

D O I：

10.3969/j.issn.1001-2400.2014.06.028

中图分类号：

学科分类号：

摘要：

The low-accuracy strapdown inertial navigation system' (SINS) heading angle can not be achieved in the process of initial alignment, also the GPS direction finding with two antennas requires a long time for initialization. As to that, a new arithmetic is proposed in order to acquire the heading angle faster: the heading angle of the baseline is fixed quickly assisted by the baseline length in the condition of the least square error by searching the attitude; also the attitude is confined by elevation information from SINS' initial alignment. Then the heading angle is used in the SINS' initial attitude. The model is established, the principle of the new algorithm is discussed, and then some correlative expressions are induced. Experiments indicate that the new method proves proper and credible with simple algorithm and high practicability. The error is no more than 0.2° in pitch precision and yaw precision within 30 sec and initial alignment is accomplished within 100 sec. ©, 2014, Science Press. All right reserved.

引用

页码：167 / 173

页数：6

共 12 条

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