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High-precision bistatic linear frequency modulation continuous wave radar synchronization system

A frequency-modulated continuous wave and linear frequency modulation technology, which is applied in the field of radar and can solve problems such as insufficient accuracy and inability to achieve ranging.

Pending Publication Date: 2020-11-24
无锡市雷华科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In indoor precise positioning applications, millimeter-wave radar will face complex clutter environment and multipath problems. Responsive bistatic radar can solve this problem very well, but the gap between the two radars of responsive bistatic radar There will be synchronization problems, resulting in insufficient accuracy or even inability to achieve ranging

Method used

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  • High-precision bistatic linear frequency modulation continuous wave radar synchronization system

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Embodiment Construction

[0019] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] This application discloses a high-precision bistatic linear frequency modulation continuous wave radar synchronization system, please refer to figure 1 , the system includes a first radar subsystem, a second radar subsystem and a scheduling module. The circuit structures of the two radar subsystems are the same and are set at the positioning points respectively. Each radar subsystem includes FPGA, millimeter wave radar and The wireless transparent transmission module, the wireless transparent transmission module and the millimeter-wave radar are respectively connected to the FPGA. The FPGA connects the wireless transparent transmission module and the millimeter-wave radar through serial communication, and the FPGA also controls the radiation switch and synchronous trigger pulse of the millimeter-wave radar.

[0021] The wireless tran...

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Abstract

The invention discloses a high-precision bistatic linear frequency modulation continuous wave radar synchronization system, and relates to the technical field of radars. The system comprises a first radar subsystem, a second radar subsystem and a scheduling module, the scheduling module uses a wireless transparent transmission module to perform unified control and scheduling on the two radar subsystems, and after each radar is powered on, one radar transmits frequency modulation continuous waves, the other radar receives the frequency modulation continuous waves, the inherent frequency difference of the two radar subsystems can be measured through two echo signals, and the radar systems adjust synchronization signals of the radar systems to achieve approximate alignment of linear frequencymodulation starting moments to eliminate deviation and frequency deviation of the starting moments. Synchronization of the two radar subsystems is achieved, the problem that distance measurement cannot be achieved is solved, and the distance measurement precision is improved.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a high-precision bistatic linear frequency modulation continuous wave radar synchronization system. Background technique [0002] With the application of radar in the automotive field, the relevant technologies of 77GHz frequency band vehicle millimeter wave radar are becoming more and more mature, resulting in many low-cost solutions, which are popularized and used in various fields. 77GHz frequency band vehicle millimeter wave radar is gradually used in security radar to detect people , Liquid level radar ranging and indoor precise positioning. In indoor precise positioning applications, millimeter-wave radar will face complex clutter environment and multipath problems. Responsive bistatic radar can solve this problem very well, but the gap between the two radars of responsive bistatic radar There will be synchronization problems, resulting in insufficient accuracy or even impos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/00G01S13/34G01S7/00G01S7/40
CPCG01S13/003G01S13/34G01S7/003G01S7/4056
Inventor 孔锋姜涛飞杜霞高娴
Owner 无锡市雷华科技有限公司
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