Method for judging serviceability of satellite navigation system information, processing module and terminal

Abstract

The invention discloses a method for judging the creditability of satellite navigation system information. The method comprises the following steps: acquiring redundant information in an auxiliary sensor or map database; making the acquired redundant information into a standard sample; judging whether the current GNSS (global navigation satellite system) signals drift or not through the standard sample; if the current GNSS signals drift, acquiring a resurrection sample for judging GNSS signal drift, comparing the resurrection sample with data of the signal shift to judge that whether the GNSS signals can be resurrected into a non-drift state or not; and if the GNSS signals can be resurrected into a non-drift state, ensuring that the current GNSS signals are believable. By adopting the method, the positioning accuracy of the system can be greatly improved, and then the performance of the whole navigation system or equipment terminal is promoted. Meanwhile, the invention also provides an information processing chip, an information processing module and a terminal.

Description

technical field [0001] The invention relates to the field of satellite navigation, in particular to a satellite navigation system information availability judgment method, a processing module and a terminal. Background technique [0002] In existing integrated navigation devices, the drift of satellite signals is a common problem due to signal interference or shadowing caused by complex use environments. At present, the judgment and processing of satellite signal drift are mostly focused on the circuit improvement of the receiver itself and the signal delay estimation processing. These drift judgment or processing methods are either the improvement of the receiver hardware circuit or the improvement of the algorithm model. , the effect achieved is not satisfactory. Since there is no intervention of external redundant information, only relying on the satellite signal itself to eliminate the drift of the discrimination signal has its own limitations and cannot really solve th...

AI Technical Summary

Problems solved by technology

[0002] In the existing integrated navigation equipment, due to the signal interference or shadowing caused by the complex use environment, the drift of the satellite signal has become a common problem

At present, the judgment and processing of satellite signal drift are mostly focused on the circuit improvement of the receiver itself and the signal delay estimation processing. These drift judgment or processing methods are either the improvement of the receiver hardware circuit or the improvement of the algorithm model. , the effect achieved is not ideal

Since there is no intervention of external redundant information, only relying on the satellite signal itself to eliminate the drift of the discrimination signal has its own limitations and cannot really solve the problem of positioning errors caused by GNSS signal drift in the current terminal equipment in a complex environment.

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