Vehicle integrated navigation system based on two dimensional laser Doppler velocimeter

Chen Hongjiang; Nie Xiaoming; Wang Mengcheng

doi:10.3788/IRLA201847.1217008

In order to reduce the measurement error because of the jolting of the vehicle, a novel two dimensional laser Doppler velocimeter (2-D LDV) was presented. And an idea of building an integrated navigation using 2-D LDV together with strapdown inertial navigation system (SINS) was proposed. The basic principle of 2-D LDV was expounded and the specific structure of the system using 2-D LDV together with SINS was discussed in detail. The result of theory and experiment show that the 2-D LDV reduces the measurement error because of the jolting of the vehicle, which has greatly improved the positional accuracy of the navigation system. The position error has been decreased from 936 m with pure SINS to 17.2 m with the 1-D LDV/SINS integrated system to 7.1 m with the 2-D LDV/SINS integrated system for the total distance of 29.67 km. 2-D LDV is more suitable for the vehicle integrated navigation system relative to the 1-D LDV.

Vehicle integrated navigation system based on two dimensional laser Doppler velocimeter

1. Institute of Metrology of Hunan Province,Changsha 410073,China;

2. College of Leading Edge Interdiscipline,National University of Defense Technology,Changsha 410073,China

Received Date: 2018-07-10

Rev Recd Date: 2018-08-28

Publish Date: 2018-12-25

Key words:

two dimensional laser Doppler velocimeter /
strapdown inertial navigation /
integrated navigation /
jolt up and down

Abstract: In order to reduce the measurement error because of the jolting of the vehicle, a novel two dimensional laser Doppler velocimeter (2-D LDV) was presented. And an idea of building an integrated navigation using 2-D LDV together with strapdown inertial navigation system (SINS) was proposed. The basic principle of 2-D LDV was expounded and the specific structure of the system using 2-D LDV together with SINS was discussed in detail. The result of theory and experiment show that the 2-D LDV reduces the measurement error because of the jolting of the vehicle, which has greatly improved the positional accuracy of the navigation system. The position error has been decreased from 936 m with pure SINS to 17.2 m with the 1-D LDV/SINS integrated system to 7.1 m with the 2-D LDV/SINS integrated system for the total distance of 29.67 km. 2-D LDV is more suitable for the vehicle integrated navigation system relative to the 1-D LDV.

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Reference (14)

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Vehicle integrated navigation system based on two dimensional laser Doppler velocimeter

doi: 10.3788/IRLA201847.1217008

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