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Method, system and device for wireless positioning of in-band pseudo satellite

A technology of wireless positioning system and pseudolite, which is applied in the field of in-band pseudolite wireless positioning method, system and device, and can solve problems such as signal interference

Active Publication Date: 2015-06-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution requires the receiver to process the signal dynamic range of navigation satellites and pseudolites at the same time, and also needs to solve the problem of signal interference between the two, and needs to add a new wireless system

Method used

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  • Method, system and device for wireless positioning of in-band pseudo satellite
  • Method, system and device for wireless positioning of in-band pseudo satellite
  • Method, system and device for wireless positioning of in-band pseudo satellite

Examples

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Effect test

Embodiment 1

[0075] The in-band pseudolite wireless positioning system provided by the embodiment of the present invention, such as figure 1 As shown, including: base station, pseudolite and terminal; where,

[0076] The base station is configured to send identification information to the plurality of pseudolites after correcting the transmission clocks of the plurality of pseudolites managed by itself; and send a set of pseudolites and positioning correction information to the terminal;

[0077] The pseudolite is used to generate a random positioning signal sequence according to the identification information sent by the base station, and send a positioning signal according to the transmission clock and the random positioning signal sequence;

[0078] The terminal is configured to generate a pseudolite random positioning signal sequence according to the pseudolite set and the positioning correction information sent by the base station; according to the pseudolite random positioning signal...

Embodiment 2

[0121] The in-band pseudolite wireless positioning method provided by the embodiment of the present invention, such as Figure 4 shown, including:

[0122] Step 401: The base station sends identification information to the pseudolite after correcting the transmit clock of the pseudolite it manages.

[0123] Here, the base station correcting the transmit clock of the pseudolites managed by itself includes: the base station measures the clock difference between one or more pseudolites managed by the base station through synchronization information; The transmission clocks of one or more pseudolites are corrected. Optional: The clock difference between the base station and the pseudolite can be measured by other measures, such as manually measuring the clock difference, and then fixedly set to the synchronization module of the pseudolite.

[0124] Wherein, the identification information includes: an identification (ID, Identity) of the base station itself, and the pseudolite ID...

Embodiment 3

[0138] Integrating pseudolite wireless positioning system in the building band, such as Figure 5 As shown in , one base station and three in-band pseudolites are deployed in the middle of the building.

[0139] In this example, the base station manages 3 in-band pseudolites that provide a synchronized reference clock. In addition to transmitting general downlink signals, the base station is also configured to transmit positioning signals according to the configured power. The three pseudolites send downlink positioning signals according to the configured power. The specific implementation process is as follows:

[0140] Step 501: Base station 1 sends synchronization signals to pseudolite 1, pseudolite 2, and pseudolite 3 respectively through a wireless management link, and measures clock differences with the three pseudolites respectively. The three pseudolites adjust their local sending clocks according to the clock difference, so that the three pseudolites and the base s...

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Abstract

Disclosed are an in-band pseudolite wireless positioning method, system and device, the system comprising: a base station, a pseudolite and a terminal; the base station is used to transmit identifier information to the pseudolite after correcting the transmission clock of the pseudolite, and transmit a pseudolite array and positioning correction information to a terminal; the pseudolite is used to generate a random positioning signal sequence according to the identifier information, and utilizes the positioning link having the same frequency band as the base station wireless system to transmit a positioning signal according to the transmission clock and the random positioning signal sequence; and the terminal is used to generate a random positioning signal sequence of the pseudolite according to the pseudolite array and the positioning correction information, and match the received positioning signal according to the random positioning signal sequence to obtain the arrival time of the positioning signal, and obtain through calculation the position coordinates of the terminal according to the position coordinates of the pseudolite and the arrival time.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to an in-band pseudolite wireless positioning method, system and device. Background technique [0002] With the continuous development of the times, mobile phone positioning technology has received more and more attention. Whether it is GPS (Global Positioning System) positioning technology or the use of wireless sensor networks or other positioning methods for positioning, there are limitations. In order to achieve a higher Positioning accuracy, multi-positioning system cooperative positioning (multi-mode positioning) is a direction of future development. By giving full play to their respective strengths, they can not only provide better accuracy and response speed, but also cover a wider range to achieve seamless , precise positioning. For example, the organic combination of satellite positioning system and mobile communication system for mobile phone positioning. When using ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00G01S19/01
CPCG01S19/11H04W64/003G01S1/02G01S1/024H04W64/00
Inventor 陈诗军胡留军郁光辉陆海涛
Owner ZTE CORP
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