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Virtual multi-station TDOA positioning method and device applicable to complex environment

A technology of complex environment and positioning method, applied in measurement devices, satellite radio beacon positioning systems, instruments, etc., can solve problems such as reducing positioning accuracy and impact, and achieve the effect of improving positioning accuracy

Active Publication Date: 2018-03-27
TRANSCOM INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] To sum up, the positioning scheme based on TOA / TDOA technology has high positioning accuracy, but it is easily affected by multipath propagation and NLOS environment.
These two influencing factors will greatly reduce the final positioning accuracy

Method used

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  • Virtual multi-station TDOA positioning method and device applicable to complex environment
  • Virtual multi-station TDOA positioning method and device applicable to complex environment
  • Virtual multi-station TDOA positioning method and device applicable to complex environment

Examples

Experimental program
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Effect test

Embodiment 1

[0061] see Figure 8 , a device suitable for a virtual multi-station TDOA positioning method in a complex environment in the present invention is characterized in that:

[0062] It includes 2 to 3 receivers, one signal end of each receiver is connected to a group of antennas, and the other signal end of each receiver is respectively connected to one signal end of an LTE wireless transmission module in two directions, each LTE wireless transmission module The other signal end communicates wirelessly with one signal end of the same wireless data access device, and the other signal end of the wireless data access device is connected to the processor; the antenna at least includes a GPS antenna.

[0063] The receiver collects and processes the signal sent by the transmitting device to be positioned through the antenna, and then transmits the signal to the wireless data access device with the specified IP address through the LTE wireless transmission module and returns the specifie...

Embodiment 2

[0066] see Figure 9 ~ Figure 12 , in this example, a virtual multi-station TDOA positioning method in a complex environment is taken as an example by setting two receivers. Its main working process is that after the transmitter to be positioned transmits the signal, the two receivers obtain the signal from their respective antennas, process the signal, and transmit it to the wireless access device with the specified IP address through their respective LTE wireless transmission modules. The access device sends the input to the upper processor to complete data formatting, low signal-to-noise ratio and high-resolution time difference estimation and virtual multi-station TDOA positioning module. Because the TDOA positioning technology needs receivers to be synchronized across the network, it also involves high-precision timing, timing and wireless data transmission issues, but these are not the focus of the present invention.

[0067] When working, the signal received by the rec...

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Abstract

The invention relates to the field of wireless signal positioning technology and specifically relates to a virtual multi-station TDOA positioning method and device applicable to a complex environment.The method is characterized in that two to three receivers used for receiving data sent by a positioning transmitting device are arranged; by utilizing a property of the receivers of continuous movement during a positioning process, TDOA data collected by the receivers passing a geographic position is taken as TDOA data collected by a virtual receiver at the geographic position, so that the two to three receivers simulate multiple receivers and multi-station positioning having a station number greater than actual receiver station number is formed for acquiring data information, and proper positioning points are judged by utilizing data relevance; when working, the receivers receive signals transmitted by a transmission device to be positioned through an antenna and send the signals to a processor through a wireless uploading method for process, so that positioning of the transmission device to be positioned is realized. Compared with the prior art, the positioning precision is improved.

Description

technical field [0001] The invention relates to the technical field of wireless signal positioning, in particular to a virtual multi-station TDOA positioning method and device suitable for complex environments. Background technique [0002] Radio positioning technology was originally designed to meet the requirements of navigation and aviation location services, and then with the rapid development of radio technology, especially the development of public communication network wireless technology, the demand related to positioning is increasing, such as GPS navigation, life services, Logistics express, etc. Since wireless technology occupies a large amount of spectrum resources, different signal transmitting stations may interfere with each other, affecting normal communication. Some "black broadcasts" transmit advertising information at high power without reporting, interfering with normal radio stations. Some criminals use technologies such as "pseudo base stations" to se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/46
CPCG01S19/46
Inventor 王巍王远建
Owner TRANSCOM INSTR
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