Two-segment Continuous Alignment and Error Analysis Method Based on Dual Antenna Assistance

Juhua YANG; Linjing ZHANG; Guangwu CHEN; Jianhao CHENG; Peng LI

doi:10.11999/JEIT191021

Volume 43 Issue 2

Feb. 2021

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Article Navigation > Journal of Electronics & Information Technology > 2021 > 43(2): 501-508

Juhua YANG, Linjing ZHANG, Guangwu CHEN, Jianhao CHENG, Peng LI. Two-segment Continuous Alignment and Error Analysis Method Based on Dual Antenna Assistance[J]. Journal of Electronics & Information Technology, 2021, 43(2): 501-508. doi: 10.11999/JEIT191021

Citation:

Juhua YANG, Linjing ZHANG, Guangwu CHEN, Jianhao CHENG, Peng LI. Two-segment Continuous Alignment and Error Analysis Method Based on Dual Antenna Assistance[J]. Journal of Electronics & Information Technology, 2021, 43(2): 501-508. doi: 10.11999/JEIT191021

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Two-segment Continuous Alignment and Error Analysis Method Based on Dual Antenna Assistance

doi: 10.11999/JEIT191021

Juhua YANG³,
Linjing ZHANG^{1, 2
,
,},
Guangwu CHEN^{1, 2},
Jianhao CHENG^{1, 2},
Peng LI^{1, 2}

1.
Institute of Automatic Control, Lanzhou Jiaotong University, Lanzhou 730070, China
2.
Key Laboratory of Plateau Traffic Information Engineering and Control of Gansu Province, Lanzhou 730070, China
3.
School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China

Funds: The National Natural Science Foundation of China (61863024, 71761023), Gansu Provincial University Research Project Funding (2018C-11, 2018A-22), The Natural Science Foundation of Gansu Province (18JR3RA130, 18JR3RA110)

Received Date: 2019-12-23
Rev Recd Date: 2020-09-13

Available Online: 2020-09-28

Publish Date: 2021-02-23

Abstract

Abstract

Considering the problem that it is difficult to obtain the initial position accurately in the low-precision Inertial Measurement Unit/Global Navigation Satellite System (IMU/GNSS) loose integrated navigation system and the course divergence is easy to travel. A two-segment continuous alignment method assisted by dual antennas is designed. Firstly, the influence of initial bearing error on heading accuracy is analyzed. Secondly, due to the characteristics of high accuracy and poor dynamic response of the GNSS direction-finding system, a least-squares attitude estimation model is derived based on the dual-antenna baseline vector for initial alignment. Finally, for the alignment between travels, the research extendes the one-dimensional measurement based on the heading difference to suppress the heading error. The design experiment explores the influence of the dual antenna baseline vector on the initial alignment and the heading accuracy between travels. The improved method can make the initial azimuth error better than 0.7°. At the same time, the heading angle between travels can be tracked more accurately. For the initial alignment of the target and the alignment between the traveling, the dual antenna can provide auxiliary information, its effect is better than the single antenna IMU/GNSS combination, and the method calculation is moderate.
- Dual antenna,
- Alignment,
- Baseline

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References(14)

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