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Indoor and outdoor seamless positioning method and system based on pseudo satellite technology

A seamless positioning and pseudolite technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, surveying and navigation, etc. Simple, controllable effects

Pending Publication Date: 2021-12-28
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] What the present invention aims to solve is the problem that the existing indoor positioning method cannot realize indoor and outdoor seamless positioning, and provides a kind of indoor and outdoor seamless positioning method and system based on pseudolite technology

Method used

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  • Indoor and outdoor seamless positioning method and system based on pseudo satellite technology
  • Indoor and outdoor seamless positioning method and system based on pseudo satellite technology
  • Indoor and outdoor seamless positioning method and system based on pseudo satellite technology

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific examples.

[0043] An indoor and outdoor seamless positioning system based on pseudolite technology, such as figure 1 As shown, it consists of a pseudolite receiving end (that is, the user to be positioned), at least three pseudolite analog receiving and receiving ends, a reference transmitting end and a main control end. For positioning needs, it is necessary to arrange at least three pseudolite analog transceivers with different positions. When the positioning method based on time of arrival (ToA), received signal strength (RSS) and angle of arrival (AoA) is used, three pseudolites can be used to simulate the transceiver. When the positioning method based on time difference of arrival (TDoA) is used, it is required Four pseudolites are used to simulate the transceiver. In this em...

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Abstract

The invention discloses an indoor and outdoor seamless positioning method and system based on a pseudo-satellite technology, and the method comprises the steps: changing a pseudo-satellite transmitting end into a receiving and transmitting system, receiving an external satellite signal during indoor positioning, enabling indoor positioning and outdoor positioning to be combined, and enabling the system to be additionally provided with a reference transmitting end; and obtaining the distance and the included angle with the indoor target, so that the outdoor position can be measured in an auxiliary manner. Flexible indoor and outdoor positioning switching can be realized, a pseudolite telegraph text is highly similar to that of a sky satellite, normal acquisition of a receiver is not affected, and no matter whether a positioning target is indoor or outdoor, the receiver can normally receive signals; a special receiver does not need to be additionally designed, indoor and outdoor modes do not need to be switched, the system technology is simple to realize, and the algorithm is easy to implement and high in controllability.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to an indoor and outdoor seamless positioning method and system based on pseudolite technology. Background technique [0002] For the satellite positioning system, as long as the receiver can capture more than 4 GPS satellite signals at any position, the positioning can be completed. However, due to the characteristics of satellite signals, it is difficult for their signals to completely penetrate obstacles. Therefore, in some closed environments, such as indoor scenes such as underground parking lots, tunnels, and shopping malls, the GPS receiving antenna is blocked, and often only weak images can be captured. signal, even less than 4 satellites can be tracked, which has a huge impact on the stability and accuracy of positioning. For this reason, indoor positioning technology is a hot spot in current research and development, and most of the indoor positioning systems c...

Claims

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Application Information

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IPC IPC(8): G01S19/42G01S19/25G01C21/20
CPCG01S19/423G01S19/258G01C21/206
Inventor 邓洪高漆奕午纪元法孙希延郭宁李晶晶付文涛吴传宇
Owner GUILIN UNIV OF ELECTRONIC TECH
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