Fusion positioning method and system for rail transit

The invention discloses a fusion positioning method and system for rail transit. The method comprises the following steps: combining Beidou data and inertial navigation data to construct a Beidou-inertial navigation data structural body, combining inertial navigation data and electronic tag data to...

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Bibliographische Detailangaben
Hauptverfasser:	LI ZHIHONG, ZHANG YAOLONG, CHANG YUANYUAN, LYU WEI, FU XIANGXI, WANG XINYU, LIU ZHONGXING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES GYROSCOPIC INSTRUMENTS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SURVEYING TESTING
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Beschreibung
Zusammenfassung:	The invention discloses a fusion positioning method and system for rail transit. The method comprises the following steps: combining Beidou data and inertial navigation data to construct a Beidou-inertial navigation data structural body, combining inertial navigation data and electronic tag data to construct an inertial-navigation electronic tag data structural body, and combining odometer data and electronic tag data to construct an odometer- electronic tag data structural body; determining a current fusion positioning structure body according to a preset positioning priority, a Beidou statecode, an inertial navigation state code, an odometer state code and an electronic tag state code, the current fusion positioning structure body being a Beidou inertial navigation data structure body,a Beidou data structure body, an inertial navigation-electronic tag data structure body or an odometer-electronic tag data structure body; and correcting the positioning data corresponding to the current fusion positioning str