Low-power-consumption beidou receiver based on cloud calculation and positioning method thereof

Abstract

The invention discloses a low-power-consumption beidou receiver based on cloud calculation and a positioning method of the low-power-consumption beidou receiver. The receiver comprises a client and cloud which are connected. The positioning method comprises the steps that a positioning request and intermediate-frequency data are sent to the cloud by the client; after receiving the positioning request of the client, the cloud receives the intermediate-frequency data sent by the client, and calculation of the position of the client is achieved through a rough time navigation method; a positioning result is sent to the client by the cloud; when receiving the positioning result, the client finishes positioning once, is shifted to a low-power-consumption mode, and waits for a next-time positioning request. Because the rough time navigation method is adopted, the client just needs to collect several milliseconds of intermediate-frequency data and sends the intermediate-frequency data to the cloud, the working time of the client is greatly reduced when being compared with the working time, which lasts at least 30 seconds, of an independent beidou receiver, and the time when the client is in a closed mode or a low-power-consumption mode is more.

Description

technical field [0001] The invention relates to a Beidou receiver and its positioning method, in particular to a cloud computing-based low-power Beidou receiver and its positioning method, belonging to the field of Beidou receiver cloud computing. Background technique [0002] In recent years, the rise of smart phones and tablet computers, especially the very popular location-based service (LBS), has stimulated the popularization of satellite navigation receivers. Satellite navigation receivers have become portable devices such as smart phones and tablet computers. The standard configuration of the equipment. [0003] The Beidou receiver used in portable devices needs to complete the processes of satellite signal acquisition, tracking, navigation message extraction, and positioning calculation. Due to the low transmission rate of satellite ephemeris data, taking the D1 navigation message format as an example, the data rate is only 50bps , so the independent Beidou receiver ...

AI Technical Summary

Problems solved by technology

[0003] The Beidou receiver used in portable devices needs to complete the processes of satellite signal acquisition, tracking, navigation message extraction, and positioning calculation. Due to the low transmission rate of satellite ephemeris data, taking the D1 navigation message format as an example, the data rate is only 50bps , so the independent Beidou receiver needs to receive the complete ephemeris data continuously to complete the positioning, and this process takes at least 30 seconds

In addition, the acquisition and tracking module of the receiver needs to work continuously to keep track of the satellite signal, so it is difficult for the Beidou receiving chip of the portable device to work periodically to reduce power consumption

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