Self adaptive weighting feedback correcting filter method of SINS/GPS combined navigation system
An integrated navigation system and self-adaptive weighting technology, which is applied to navigation through speed/acceleration measurement, navigation calculation tools, road network navigators, etc., can solve the problem of low accuracy of estimated values, decreased accuracy of integrated navigation systems, and small observability And other issues
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[0035] As shown in Figures 1 and 2, the specific implementation method of the present invention is as follows:
[0036] (1) Establish the mathematical model of the SINS / GPS integrated navigation system, including the system state equation and measurement equation, as shown in formula 1 and formula 2 respectively.
[0037] System state equation:
[0038] X · = FX + GW - - - ( 1 )
[0039] Among them, X is the system state vector, W is the system noise vector, F is the system transfer matrix, and G is the noise transfer matrix:
[0040] X=[φ x φ y φ z δv x δv y δv z δL δλ δh ε x ε y ε z x y z ] T
[0041]
[0042] F = F INS F ...
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