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Two self-test methods applied to an inertial system problem (1975)

Crawford, B. S. ; Willsky, A. S. ; Deyst, J. J.

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Publication Date: 2019-06-27

Description: The paper describes two self-test procedures applied to the problem of estimating the biases in accelerometers and gyroscopes on an inertial platform. The first technique is the weighted sum-squared residual (WSSR) test, with which accelerator bias jumps are easily isolated, but gyro bias jumps are difficult to isolate. The WSSR method does not take full advantage of the knowledge of system dynamics. The other technique is a multiple hypothesis method developed by Buxbaum and Haddad (1969). It has the advantage of directly providing jump isolation information, but suffers from computational problems. It might be possible to use the WSSR to detect state jumps and then switch to the BH system for jump isolation and estimate compensation.

Keywords: INSTRUMENTATION AND PHOTOGRAPHY

Type: Journal of Spacecraft and Rockets; 12; July 197

Format: text

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