Supercompact combined navigation positioning system and method

Abstract

The invention discloses a supercompact combined navigation positioning system and method. The supercompact combined navigation positioning system comprises a master controller, a coprocessor, a communication module, a display screen module, an INS measurement unit, a satellite RF signal processor and a high-accuracy antenna, wherein the master controller is used for building a combined navigationfilter and giving out a command, the coprocessor is used for building a vector tracing ring circuit, acquiring and processing GNSS data and transmitting the GNSS data to the master controller, the INSmeasurement unit is used for responding the command given out from the master controller and acquiring data of a gyro, an accelerometer and a dip angle sensor which are arranged in advance, the satellite RF signal processor is used for acquiring a satellite signal and then transmitting the satellite signal to the coprocessor after amplification, filtering and frequency conversion, and the communication module is used for achieving data communication between the master controller and a management center. INS and GNSS information are highly fused by a supercompact combination mode, the cohesiveness and the interference-resistant capability of the combined navigation system are improved, so that the positioning accuracy is further improved.

Description

technical field [0001] The invention relates to a vehicle positioning system, in particular to an ultra-tight integrated navigation positioning system and method. Background technique [0002] With the improvement of people's living standards and the rapid development of the automobile industry, the requirements for real-time dynamic positioning of vehicles are constantly increasing. Continuous positioning needs, in the face of people's navigation needs for high precision and high anti-interference, the information fusion of inertial navigation systems and satellite integrated navigation systems has become a hot spot, and the combination methods are divided into loose combination, tight combination and ultra-tight combination. The integrated navigation system is realized by loose combination and tight combination, especially the vehicle-mounted integrated positioning system uses GNSS receivers and INS (Inertial Navigation System, inertial navigation system) in a loose combin...

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Problems solved by technology

[0004] In the prior art, please refer to the Chinese utility model patent document with the application number 201520686950.4, the authorized announcement number CN205067758U, and the name "a navigation system based on GPS or INS combination". The disadvantage of the existing integrated navigation system is the navigation accuracy There are certain limitations, and when the satellite signal is interrupted, the INS autonomous navigation error accumulates rapidly, lacks the correction of auxiliary systems such as dead reckoning, and the positioning accuracy is not high

[0005] In the existing technology, please refer to the Chinese invention patent document with the application number 201811363017.8 and the name "A Vehicle-Based Navigation Vehicle Combination Positioning Device and Its Combination Positioning Method". When the satellite signal is out of lock for a long time, relying solely on DR to assist the inertial navigation will affect the long-term positioning accuracy of the vehicle navigation

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