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Aerospace Instrument-Making

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The azimuth orientation by means of angular rate sensor
Redkin S.P.

In determining the true azimuth examined by analytical gyrocompassing using one, two and three angular rate sensor (ARS) channels located on the fixed and mobile bases. The analysis of errors gyrocompassing. For a fixed base methods have been developed to reduce these errors, including: algorithmic compensation for the sys-tematic component of the drift velocity ARS; avtocompensation drift rate; combined method compensation drift rate, with is autocompensation some component of the drift rate and algorithmic compensation others; algorithmic error compensation itself gyrocompassing; joint self compensation of the drift rate and error gyrocompassing. The methods of analytical gyrocompassing with two channels and three ARS. An analytical gyrocompassing by ARS at strapdown how install it on an object moving with the linear and angular velocities. In order to improve the accuracy of the moving object is analyzed using gyroscopic platforms of varions types with situates them on ARS. The analytical expressions for gyrocompassing when installing ARS at a stable in the plane of local horizon platform, on the controlled in azimuth and stabilized in the plan of the local horizon platform, free in azimuth and stabilized in the plan of the local horizon platform. Based on these analytical expressions is determined necessary for the foreign gyrocompassing informational about of the movement of the object. A comparative analysis of this information in stradown and platform versions of ARS on the object. The results of experimental studies and comparative analysis of different methods gyrocompassing with ARS.
Key words: analytical gyrocompassing, errors of analytical gyrocompassing. algorithmic compensation, self-compensation of the drift, self-compensation of the errors of gyrocompassing, gyroscopic platforms.


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