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An Aircraft-Assisted Method for Indoor Object Localization in Buildings

A technology for target positioning and aircraft, which is applied to services based on location information, services based on specific environments, satellite radio beacon positioning systems, etc. The effect of high precision, improved stability and anti-interference

Active Publication Date: 2021-12-07
NANJING DWING AVIATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at the disaster site, even if the indoor positioning base station is deployed, it will be unusable due to damage
[0004] In addition, the current outdoor target positioning mainly relies on GNSS, but indoor GNSS signals are almost unavailable due to building shadows, making positioning difficult

Method used

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  • An Aircraft-Assisted Method for Indoor Object Localization in Buildings

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Experimental program
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Effect test

Embodiment

[0014] Such as figure 1 As shown, the aircraft 1 itself in this embodiment is usually equipped with a GNSS positioning device and a first barometer for real-time measurement of the position and air pressure of the aircraft. If the aircraft itself is not equipped with a GNSS positioning device and a first barometer, a GNSS positioning device and a first barometer can be added to the aircraft. The GNSS positioning device can use an existing GPS positioning device or a Beidou positioning device. The aircraft can use unmanned aerial vehicles or manned helicopters. With the development of unmanned aerial vehicle technology, unmanned aerial vehicles can be used to locate indoor targets, which is convenient to use and safer to operate.

[0015] Because radio signal radiation is directional, the direction of the source of radio signal radiation can be determined with direction finding equipment. The aircraft 1 described in this embodiment carries a two-dimensional direction-finding d...

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Abstract

The invention relates to an aircraft-assisted indoor target positioning method for a building, comprising the following steps: the aircraft flies around the periphery of the building, the GNSS positioning device obtains the position coordinates of the aircraft in real time; the two-dimensional direction-finding device receiving the signal sent by the positioning tag, thereby obtaining the yaw angle and pitch angle of the source direction of the signal, and then obtaining the source direction of the signal according to the position coordinates of the aircraft; the positioning tag of the indoor target measures the air pressure of the indoor target position, The barometer obtains the air pressure value of the aircraft position in real time, and obtains the horizontal plane where the indoor target is located; calculates the intersection point between the source direction of the signal and the horizontal plane where the indoor target is located, and obtains the position coordinates of the indoor target, thereby realizing Localization of indoor objects. The present invention does not need to deploy indoor positioning base stations, not only has high positioning accuracy, but also has good stability and anti-interference performance.

Description

technical field [0001] The invention relates to an aircraft-assisted indoor target positioning method of a building, which belongs to the technical field of wireless positioning. Background technique [0002] Public security, emergency response, fire protection and other departments need to locate the personnel entering the scene in real time when there are alarms, disasters, fires, etc. in buildings (especially high-rise buildings). [0003] The main existing indoor positioning methods include Wi-Fi, Bluetooth, UWB (Ultra-Wideband, ultra-wideband), etc. Among them, Wi-Fi and Bluetooth methods can be positioned with the help of existing hardware such as mobile devices, but the positioning accuracy is low and stable. The performance and anti-interference performance are also relatively poor; while the UWB positioning accuracy can reach 10cm level, but the signal penetration is relatively poor, so more positioning base stations need to be deployed, and specific UWB tags need t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W4/33H04W64/00G01C5/00G01C5/06G01S19/42
CPCG01C5/005G01C5/06G01S19/42H04W4/025H04W64/00H04W4/33
Inventor 季嘉银季鸿彭海梅
Owner NANJING DWING AVIATION TECH CO LTD