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Auxiliary global positioning system (GPS) location method and system based on wireless network single node

A GPS positioning and wireless positioning technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices and other directions, can solve the problems of high cost of self-organized wireless networks

Active Publication Date: 2014-12-17
深圳中智永浩机器人有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an assisted GPS positioning method and device based on a single wireless network node to solve the problem that in the prior art, at least three nodes are required for wireless network positioning to achieve relatively accurate positioning accuracy, which leads to the disadvantages of ad hoc wireless network positioning. higher cost issues

Method used

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  • Auxiliary global positioning system (GPS) location method and system based on wireless network single node
  • Auxiliary global positioning system (GPS) location method and system based on wireless network single node
  • Auxiliary global positioning system (GPS) location method and system based on wireless network single node

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Embodiment 1

[0085] Such as figure 1 Shown, the assisted GPS positioning method based on wireless network single node of the present invention, comprises the following steps:

[0086] S100: Obtain GPS positioning data, connected wireless node data, motion data and positioning results of the previous moment of the mobile terminal at the current moment.

[0087] By setting modules such as a GPS module, a wireless transmission module, and a motion data collection module on the mobile terminal, the current motion data, GPS positioning data and connected wireless node data of the mobile terminal are obtained. The positioning time interval needs to be balanced between real-time positioning accuracy requirements and processing system resources, and can be adjusted according to actual conditions. From 1 second to 10 seconds, and even longer intervals are allowed. In order to achieve higher positioning accuracy, the positioning time interval may be limited to 1 second.

[0088] Wherein, the GPS ...

Embodiment 2

[0147] The present invention also provides an assisted GPS positioning system based on a wireless network single node, such as Figure 5 shown, including:

[0148] The data acquiring unit 10 is used to acquire GPS positioning data, connected wireless node data, motion data and the positioning result of the previous moment of the mobile terminal at the current moment.

[0149] Specifically, such as Image 6 As shown, the data acquisition unit 10 includes a GPS module 11, a wireless transmission module 12, and a motion data collection module 13 arranged on the mobile terminal. At the same time, the data acquisition unit 10 reads the stored positioning result at the previous moment. The GPS module is used to obtain GPS positioning data of the mobile terminal, including longitude data and latitude data.

[0150] The wireless transmission module 12 is used for acquiring connected wireless node data, and can also be used for wireless data transmission. The wireless transmission ...

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Abstract

The invention provides an auxiliary global positioning system (GPS) location method and system based on a wireless network single node. The method includes acquiring data of a mobile terminal at the current moment and a location result of the mobile terminal at the last moment; analyzing the acquired data, acquiring wireless location distance, the GPS position of the connected wireless node and the GPS location result, and calculating the wireless location result; searching for a route set in the wireless node covering range; conducting maximum likelihood estimation according to the GPS location result, the wireless location result and the route set to obtain the maximum likelihood position. An observation result is acquired through position prediction, wireless distance measuring and GPS location. The restraint condition is obtained through route searching. The method and system combines results of wireless location and GPS location based on the principle of the maximum likelihood estimation. Only one node is required for auxiliary location, the location errors can be reduced substantially, the location accuracy is improved, the wireless node number is effectively reduced, and the self-grouping wireless network location cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of wireless positioning, in particular to an auxiliary GPS positioning method and system based on a wireless network single node. Background technique [0002] With the rapid increase of data services and multimedia services, people's demand for positioning and navigation is increasing day by day. Global Positioning System (GPS) is the most widely used positioning technology at present, and it has been widely used all over the world, and plays a very important role in modern society. However, the traditional GPS positioning technology is limited by positioning time, weather, complex environment or indoor environment and other conditions, and has the disadvantage of limited or impossible positioning accuracy. [0003] In addition, there are some wireless positioning technologies, such as cellular network (such as A-GPS) positioning technology, radio frequency identification (RFID) positioning technology, wir...

Claims

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Application Information

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IPC IPC(8): G01S19/46
CPCG01S19/46
Inventor 谢强陈亮
Owner 深圳中智永浩机器人有限公司
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