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Aerospace Instrument-Making Annotation << Back
CALIBRATION OF SINS SENSITIVE ELEMENTS INVARIANT TO BASING ERRORS |
A.V. Bykovsky
The presented method of direct calibration of sensitive elements is invariant to errors in the SINS installation to the calibration equipment and basing errors of the equipment itself. An iterative procedure for calibrating accelerometers allows you to eliminate the influence of nonlinearities in measurement models. The accuracy of the method is limited by the values of the non-orthogonality of the axes of the equipment - a stand or a calibration cube. The use of non-orthogonality between the axes of sensitive elements in the description of the SINS error model gives a more stable model than the use of non-orthogonality in relation to the SINS body, which is subject to deformations during operation. The method is applicable for the calibration of any accuracy class SINS without the use of high-precision dynamic stands.
Keywords: invariant calibration, SINS sensitive elements, mutual non-orthogonality, basing errors, iterative procedure, calibration cube.
DOI: 10.25791/aviakosmos.3.2022.1269
Pp. 11-21. |
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