An error compensation method for DMC attitude sensors based on geomagnetic components

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (24) : 68-76.

GONG Yiming1，LI Chun2，SHANG Fei3，KONG Deren3，YUAN Yaodong2

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Abstract

In order to improve the measurement accuracy of embedded integrated optoelectronic aiming system, I have studied the error compensation method of the key component digital magnetic compass in the system. On the basis of in-depth analysis of the principle of full attitude error compensation, a method of error optimization compensation based on geomagnetic components is proposed to address its compensation limitations. A new error compensation framework has been constructed to estimate nonlinear factors through particle swarm search algorithm. I designed a magnetic compass error compensation experiment. Experimental results have shown that the error optimization compensation method based on geomagnetic components effectively improves the accuracy of heading measurement, with an improvement range of 10% to 20%. This method has significant application value in on-site calibration of digital magnetic compasses.

Key words

photoelectric aiming system / digital magnetic compass / compensation model / geomagnetic field component / particle swarm optimization

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GONG Yiming1, LI Chun2, SHANG Fei3, KONG Deren3, YUAN Yaodong2. An error compensation method for DMC attitude sensors based on geomagnetic components[J]. Journal of Vibration and Shock, 2024, 43(24): 68-76

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