Accessible Errors in Determining Navigation Parameters Generated by the Astroinertial Navigation System

Abstract

The paper considers a method of algorithmic correction used to combine the inertial measurement unit and the astrosensor bases in the astroinertial navigation system. It describes principles of constructing such a system. The paper identifies differences in the nature of errors in the determined navigation parameters and advantages of using the astrosensors as a means for obtaining additional information in correcting the determined navigation parameters. The astronavigation system coordinates are defined and described. The paper presents mathematical relationships and a technique for algorithmic correction based on the coordinates transformation through the Euler angles, as well as a conjugation matrix for instrumental bases of the inertial measurement unit and the astrosensor. Conditions for the necessary measurements are determined. Sequence of actions during the experiment is considered. Experimental results obtained using the algorithmic correction method and without it are compared. The resulting errors in the astroinertial navigation system are experimentally estimated. The paper shows that algorithmic correction allows achieving errors in determining the geographic coordinates no worse than 0.03°. It concludes on the necessity of the algorithmic coupling procedure with bases of the astroinertial system components to achieve the accuracy and operation characteristics

Please cite this article in English as:

Bolotnov A.S., Buryi E.V., Kondrashkin G.V. Accessible errors in determining navigation parameters generated by the astroinertial navigation system. Herald of the Bauman Moscow State Technical University, Series Instrument Engineering, 2025, no. 2 (151), pp. 4--18 (in Russ.). EDN: UESOLZ

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