Method and system for reducing influence of speed error on integrated navigation precision in lock losing process
An integrated navigation and speed error technology, applied in the field of integrated navigation, can solve the problems of high real-time data requirements, high dynamic global satellite positioning system speed output error, and reduced precision of inertial navigation/global satellite positioning integrated navigation system. Mature and reliable, good real-time performance, and the effect of improving accuracy
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:
[0023] like figure 1 Shown is a system that can reduce the impact of the loss of lock speed error on the integrated navigation accuracy, which includes a global satellite positioning system receiver 1, a micro-mechanical inertial group 4, a programmable logic controller 5, a digital signal processor 3 and a CAN bus 6, Wherein, the signal output end of the GPS receiver 1 is connected to the signal input end of the programmable logic controller 5, and the signal output end of the micromechanical inertial group 4 is connected to the signal input end of the digital signal processor 3. The signal output end of the programming logic controller 5 is connected to the signal input end of the digital signal processor 3 , and the signal output end of the digital signal processor 3 is connected to the CAN bus 6 . A Kalman filter algorithm is emb...
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