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Location method and device based on indoor signal supplementary system

A positioning method and signal technology, applied in the field of positioning, can solve the problems of poor positioning stability and low accuracy, and achieve the effects of low cost, high positioning accuracy and stability

Active Publication Date: 2011-10-12
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If the signal strength of the wireless signal is used as the characteristic quantity of positioning, when performing indoor positioning, due to the relatively complex indoor environment, the signal is greatly affected by factors such as environmental changes, multipath, signal fading, interference, etc., resulting in poor positioning stability and low accuracy.

Method used

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  • Location method and device based on indoor signal supplementary system
  • Location method and device based on indoor signal supplementary system
  • Location method and device based on indoor signal supplementary system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Embodiment 1 of the present invention proposes a positioning method based on the indoor signal supplementation system, each antenna under the indoor signal supplementation system is added with a positioning signal generator in one-to-one correspondence, and the process is as follows figure 1 As shown, the method includes:

[0088] Step 101, acquiring a positioning signal of an unknown location and a signal of a positioning signal generator, and measuring the signal strengths of the positioning signal and the signal of the positioning signal generator;

[0089] Step 102, demodulating the positioning signal generator signal, obtaining the navigation message broadcast by the positioning signal generator, and obtaining the antenna ID of the antenna sending the positioning signal generator signal from the navigation message;

[0090] Step 103, according to the preset corresponding relationship between the signal strength of the positioning signal and the signal strength of t...

Embodiment 2

[0096] Embodiment 2 of the present invention proposes a positioning method based on an indoor signal supplementation system, which is improved on the basis of Embodiment 1.

[0097] In order to solve the poor indoor signal situation in the prior art, the present invention adds a signal supplementary system indoors to enhance the signal strength of the outdoor signal before forwarding, and proposes a positioning method based on the indoor signal supplementary system.

[0098] Such as figure 2 The shown supplementary system, in this embodiment, takes the positioning area as a total of three floors for description. In the supplementary system, a broadband antenna is installed, and the broadband antenna is located outdoors for receiving outdoor signals. Weak electric wells are respectively installed in each city building. , the broadband antenna forwards the outdoor signal to each floor through three weak electric wells, and antennas are installed at different positions on each f...

Embodiment 3

[0137] Such as Figure 6 As shown, Embodiment 3 of the present invention proposes a positioning method based on an indoor signal supplementation system, which is improved on the basis of Embodiment 2.

[0138] It should be noted that this embodiment uses the same indoor supplementary system as that of Embodiment 2, and the indoor supplementary system is as image 3 As shown, it will not be repeated here.

[0139] A positioning method based on the indoor signal supplement system, each antenna under the indoor signal supplement system is added with a positioning signal generator one by one, and the antennas arranged on each floor are assigned antenna IDs to distinguish them. The method is specific include:

[0140] Step 301. Obtain a positioning signal and a positioning signal generator signal at an unknown location, and measure the signal strength of the positioning signal and the positioning signal generator signal;

[0141] In this embodiment, the positioning signal is a s...

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Abstract

The invention provides a location method and a location device based on an indoor signal supplementary system, and belongs to the field of location. In the method, location signal generators are added into antennas of the indoor signal supplementary system in one-to-one correspondence; identities (ID) of the antennas which send location signals can be judged, time delay of the location signals can be acquired and used as characteristic information and location is performed. By the method and the system, a terminal can use the time delay of the location signals which are strengthened by the supplementary system as the location characteristic information, and the location precision and the stability of the system are higher than the location precision and the stability of the location system which utilizes signal intensity as the location information in the prior art. Moreover, by adopting the traditional indoor signal supplementary system, the location signal generators with a simple structure are added, so the cost is low.

Description

technical field [0001] The invention relates to the field of positioning, in particular to a positioning method and device based on an indoor signal supplement system. Background technique [0002] In recent years, with the continuous improvement of people's material living standards, people's demand for location-based services is also increasing day by day, such as in personnel dispatching, asset management, emergency rescue, safety monitoring, safety dispatching, intelligent transportation, map navigation, travel guides, etc. There is a wide demand for positioning; especially in emergency situations, such as emergency rescue, disaster relief emergency command and dispatch and other special application scenarios, positioning information is even more important. In recent years, the in-depth research on pervasive computing and distributed communication technology has brought indoor wireless communication and network technology into a stage of rapid development, and then deriv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02
Inventor 邓中亮关维国余彦培徐连明那日苏邓耀宇来奇峰
Owner BEIJING UNIV OF POSTS & TELECOMM