High-precision Beidou tri-band SINS deep integration navigation system
A deep integrated navigation and high-precision technology, applied in the field of integrated navigation, can solve the problems of unavailability, unfavorable engineering application, high cost, etc., to eliminate propagation distance error and pseudo-code ranging error, improve positioning speed measurement accuracy, and reduce power consumption and cost effects
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[0038] The Beidou tri-frequency / SINS deep integrated navigation system is based on the Beidou tri-frequency receiver and SINS, and is an integrated combination at the hardware level. The main idea is to deeply couple the Beidou receiver and SINS at the in-phase and quadrature-phase signal (I and Q) levels, realize the deep and optimal fusion of SINS and Beidou navigation measurement information inside the receiver, and effectively improve the accuracy of the receiver. Performance in weak signal, high dynamic, radio frequency interference environments. Specific implementation method: The Beidou tri-frequency receiver using the scalar tracking structure uses the observations of the tri-frequency signal to eliminate the high-order term of the ionospheric refraction error to obtain high-precision pseudo-range measurement values. The TCAR method and the matrix transformation method can be used for the entire cycle. The resolution of the ambiguity, so as to obtain high-precision car...
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