Indoor and outdoor seamless positioning system and method for intelligent mobile phone and mobile terminal

Abstract

The invention discloses an indoor and outdoor seamless positioning system and an indoor and outdoor seamless positioning method for an intelligent mobile phone and a mobile terminal. The system comprises a navigation satellite system, an MIMOWiFi access point, a satellite positioning reference base station, the intelligent mobile phone and mobile equipment, wherein each of the intelligent mobile phone and the mobile equipment comprises a satellite signal receiving and processing module, a WiFi signal receiving and processing module, an inertia measurement unit and satellite-inertia-WiFi flight time tight coupling positioning software; and the satellite-inertia-WiFi flight time tight coupling positioning software of the intelligent mobile phone or the mobile equipment solves the position of the mobile equipment according to satellite measured data, MIMO antenna element measured data, MIMO antenna element geocenter earth coordinates, inertia navigation data and pseudo-distance differential correction data. By close combination of satellite-WiFi and inertia navigation, the indoor and outdoor seamless positioning system greatly improves the positioning precision and the reliability of the mobile equipment and realizes indoor and outdoor high-precision seamless coverage.

Description

technical field [0001] The invention relates to a positioning technology, in particular to an indoor and outdoor seamless positioning system and method for smart phones and mobile terminals. Background technique [0002] Satellite navigation provides outdoor positioning services for smartphones and mobile terminals, which greatly facilitates human travel, tourism, surveying, agriculture, and construction. Standalone consumer-grade satellite navigation receivers can typically achieve 10-meter accuracy. The differential technology embedded in the mobile network recently developed by EverettWang can eliminate the measurement deviation of satellite navigation, improve the positioning accuracy to the sub-meter level, and expand the positioning application range of smart phones and mobile terminals. [0003] However, radio signals emitted by navigation satellites cannot penetrate buildings and reach indoors. Therefore, satellite navigation basically cannot be used indoors. Sinc...

AI Technical Summary

Problems solved by technology

However, inertial navigation requires a correct initial position to estimate the current position, and due to the accumulated error of the inertial sensor, the positioning error will increase rapidly over time and eventually fail completely

[0007] In addition, the combination of satellite positioning, WiFi received signal strength indicator (RSSI) positioning, and inertial navigation positioning for smartphones can achieve seamless indoor and outdoor positioning. However, the accuracy of this method can reach 10 meters outdoors and tens of meters indoors. relatively large error

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