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Sensors 2018, 18(2), 670; https://doi.org/10.3390/s18020670

Error Analysis of the K-Rb-21Ne Comagnetometer Space-Stable Inertial Navigation System

1
School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China
2
National Remote Sensing Center of China, Beijing 100036, China
*
Author to whom correspondence should be addressed.
Received: 7 November 2017 / Revised: 7 February 2018 / Accepted: 21 February 2018 / Published: 24 February 2018
(This article belongs to the Special Issue Inertial Sensors for Positioning and Navigation)
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Abstract

According to the application characteristics of the K-Rb-21Ne comagnetometer, a space-stable navigation mechanization is designed and the requirements of the comagnetometer prototype are presented. By analysing the error propagation rule of the space-stable Inertial Navigation System (INS), the three biases, the scale factor of the z-axis, and the misalignment of the x- and y-axis non-orthogonal with the z-axis, are confirmed to be the main error source. A numerical simulation of the mathematical model for each single error verified the theoretical analysis result of the system’s error propagation rule. Thus, numerical simulation based on the semi-physical data result proves the feasibility of the navigation scheme proposed in this paper. View Full-Text
Keywords: inertial navigation; comagnetometer; space-stable inertial navigation system; error analysis inertial navigation; comagnetometer; space-stable inertial navigation system; error analysis
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Cai, Q.; Yang, G.; Quan, W.; Song, N.; Tu, Y.; Liu, Y. Error Analysis of the K-Rb-21Ne Comagnetometer Space-Stable Inertial Navigation System. Sensors 2018, 18, 670.

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