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Aerospace Instrument-Making Annotation << Back
Physical bases of quality functioning improvement of the integrated ground navigation systems in conditions of low self-descriptiveness of geophysical and anthropogenic fields |
S.B. Berkovich, N.B. Kotov, D.A. Kolesnikov
Problems of information productivity increasing of the ground navigation systems to be corrected on digital maps of routes of surface facilities movement are considered. A physical basis of the problem decision is nonlinear character of dependences of navigation field parameters and geometrical characteristics of routes. Statement of the problem decision of which is possible using Kalman filtering and smoothing theory is formulated. Results of mathematical modeling are submitted. It is shown, that the account of nonlinear character of the navigation field and as consequence, a various degree of observability of errors depending on a path section, provides reduction of the dispersion of the coordinates errors estimation in terminal points of a course after carrying out of smoothing procedure with respect to procedure of filtration. In the known approaches mistakes of the dynamic systems parameter estimations in terminal points after carrying out of the smoothing and filtration procedures are coincided. |
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