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Indoor positioning system based on millimeter wave radar

A millimeter-wave radar and indoor positioning technology, which is applied in the radio wave measurement system, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve the problem that the detection distance of laser radar is limited, and GPS cannot accurately locate vehicles or moving objects and other problems, to achieve the effect of high positioning accuracy and long detection distance

Pending Publication Date: 2022-02-15
苏州豪米波技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In tunnels or closed indoor environments, GPS cannot accurately locate vehicles or moving objects
Due to the detection mechanism, the detection distance of lidar or camera is relatively limited, and it is easily restricted by weather conditions such as rain, fog, and light.

Method used

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  • Indoor positioning system based on millimeter wave radar
  • Indoor positioning system based on millimeter wave radar
  • Indoor positioning system based on millimeter wave radar

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment example 1

[0032] An indoor positioning system based on a millimeter-wave radar, including a radar, a corner reflector, and a control display, and the radar includes a transmitter, a transmitting antenna, a receiver, a receiving antenna, a mixer, a low-pass filter, and an A / D conversion device, baseband signal processor; the transmitter is connected to the transmitting antenna, the receiver is connected to the receiving antenna, both the transmitter and the receiver are connected to the mixer, and the mixer Connected with the low-pass filter, the low-pass filter, the A / D converter, and the baseband signal processor are sequentially connected;

[0033] The transmitter is used to generate electromagnetic waves, and a large amount of electromagnetic waves enters the transmitting antenna, and a small amount of electromagnetic waves enters the mixer;

[0034] The mixer is used to mix the local oscillator signal transmitted by the transmitter with the echo signal received by the receiving ante...

specific Embodiment example 2

[0056] An indoor positioning system based on millimeter-wave radar. The target signal received by the radar adopts a centralized multi-sensor fusion processing method. A single radar data is uploaded to the fusion center, and a parallel fusion processing method is adopted. The specific steps are as follows:

[0057] 1. Each radar provides the measurement information of the target corner reflector [x y vx vy] and transmits it to the fusion center. The fusion center caches the data of the latest frame of all radars, and at the same time sets the front radar as the main radar. When its data When updating, the fusion center is triggered once. At this time, the sensors of multiple radars are read by the fusion center, and the data is time-synchronized. All radars synchronize the latest measurement information to the moment of the main radar echo information. Time synchronization and space registration, realize the synchronization of all radar data, and perform coordinate conversion ...

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Abstract

An indoor positioning system based on millimeter wave radar comprises a radar, corner reflectors and a control displayer, the radar transmits, receives and processes reflection information of the corner reflectors, coordinate information of a moving vehicle body is obtained through calculation and displayed through the control displayer, and the installation heights of the corner reflectors installed indoors are not completely the same. Each corner reflector reciprocates along the original point at different speeds, a centralized multi-sensor fusion processing method is adopted for target signals received by the radar, single radar data is uploaded to a fusion center, and a parallel fusion processing method is adopted to obtain position coordinates of a moving vehicle body. The indoor positioning system has the advantages that the positioning of a moving vehicle body in a severe environment can be realized by a plurality of angle reflectors with different mounting heights and different moving speeds, the positioning precision is improved, and the indoor positioning system is not limited by weather environments such as rain, snow, fog, illumination and the like and realizes all-weather and all-time positioning detection.

Description

technical field [0001] The invention relates to the technical field of vehicle positioning, in particular to an indoor positioning system based on millimeter wave radar. Background technique [0002] In tunnels or closed indoor environments, GPS cannot accurately locate vehicles or moving objects. Due to the detection mechanism, the detection distance of lidar or camera is relatively limited, and it is easily restricted by weather conditions such as rain, fog, and light. [0003] Millimeter-wave radar uses electromagnetic wave reflection to effectively detect in dark environments such as night, and has all-weather detection capabilities; millimeter-wave radar can also directly obtain target speed, distance and direction angle information, and the detection distance can reach 100 meters, so millimeter-wave radar It has great potential in the field of vehicle indoor positioning. [0004] Based on the above advantages of the millimeter wave radar, the present invention propos...

Claims

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Application Information

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IPC IPC(8): G01S13/06G01S13/58G01S13/60G01S13/87
CPCG01S13/06G01S13/584G01S13/60G01S13/87
Inventor 刘琼白蓉蓉黄苗侠罗振刚魏娜
Owner 苏州豪米波技术有限公司