Seamless indoor and outdoor positioning system and positioning method based on combination CSS with GPS

An indoor and outdoor positioning and seamless positioning technology, applied in satellite radio beacon positioning system, radio wave measurement system, wireless communication, etc., can solve the problems of high cost, high system positioning complexity, and poor accuracy, and achieve accurate positioning The effect of location service, solving the problem of low positioning accuracy and reducing complexity

Inactive Publication Date: 2017-06-20
HANGZHOU DIANZI UNIV
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AI Technical Summary

Problems solved by technology

But there are still many problems to be solved, such as: high system positioning complexity, high implementation cost, poor accuracy, etc.

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  • Seamless indoor and outdoor positioning system and positioning method based on combination CSS with GPS
  • Seamless indoor and outdoor positioning system and positioning method based on combination CSS with GPS

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Embodiment Construction

[0020] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] The overall thinking of the present invention is to adopt the outdoor positioning scheme based on GPS satellite and the indoor positioning scheme based on CSS to realize the seamless indoor and outdoor positioning function. The present invention includes two positioning methods, namely: a positioning method based on GPS satellite navigation and an indoor positioning method based on CSS; the outdoor navigation module is carried in the vehicle navigation, and the indoor positioning module is carried on the receiver of the indoor CSS positioning module.

[0022] The purpose of the present invention is to provide an indoor and outdoor seamless positioning system integrating GPS satellite navigation and CSS technology, such as figure 1 As shown, it includes: an outdoor GPS satellite positioning module, an indoor CSS positioning module, an ...

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Abstract

The invention discloses a seamless indoor and outdoor positioning system and positioning method based on combination a chirp spread spectrum (CSS) with a GPS. The positioning system is composed of an outdoor GPS satellite module, an indoor CSS positioning module, an indoor and outdoor positioning fusion switching module and a positioning result display module. The outdoor satellite positioning module utilizes a GPS satellite for navigation. The indoor CSS positioning module carries out an indoor distance measurement process by using a symmetrical double-sided two-way ranging (SDS-TWR) method, carries out optimization processing on positioning ranging data by using Kalman filtering, and then obtains an indoor position of the indoor positioning module by using a geometric trilateral positioning algorithm. The indoor and outdoor positioning fusion switching module carries out fusion, switching and integration on indoor and outdoor positioning methods based on indoor and outdoor positioning communication signal strength, thereby realizing smooth indoor and outdoor positioning result transition; and the positioning result display module displays a positioning result based on an outdoor two-dimensional electronic map and an indoor planar graph. Compared with the existing positioning system, the provided positioning system enables seamless connection of precise indoor and outdoor positioning to be realized based on combination a CSS technology with a GPS satellite navigation technology.

Description

technical field [0001] The invention relates to an indoor and outdoor seamless positioning technology, in particular to an indoor and outdoor seamless positioning system integrating GPS satellite navigation and CSS technology. Background technique [0002] With the increasing maturity of GPS, Beidou, GLONASS and other global satellite positioning and navigation positioning systems, people enjoy the fast and accurate positioning services brought by satellite positioning systems in outdoor activities. For the open outdoor environment, the Global Positioning System (Global Positioning System, GPS) is widely used, but in many indoor environments, due to the influence of concrete walls, the satellite signal will be seriously attenuated and cannot be realized in the indoor environment. Indoor positioning and navigation functions. [0003] Aiming at the positioning problem in the indoor environment, indoor positioning technologies using infrared, ultrasonic, RFID, Bluetooth, ultra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/42H04W4/02H04W4/04H04W64/00
CPCG01S19/42H04W4/023H04W4/043H04W64/00
Inventor 黄金鹏尚俊娜刘参盛林陈涛
Owner HANGZHOU DIANZI UNIV
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