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A Harmonic Tag-Assisted Enhanced Hybrid Radar Perception System

A perception system, auxiliary enhancement technology, applied in the field of radar systems

Active Publication Date: 2021-09-28
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by factors such as electromagnetic wave propagation path loss, the system urgently needs to add additional circuits (harmonic labels) to assist in enhancing radar perception capabilities

Method used

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  • A Harmonic Tag-Assisted Enhanced Hybrid Radar Perception System
  • A Harmonic Tag-Assisted Enhanced Hybrid Radar Perception System
  • A Harmonic Tag-Assisted Enhanced Hybrid Radar Perception System

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Experimental program
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Embodiment 1

[0019] attached figure 2 Shown is a hybrid radar sensing system, due to the harmonic receiving antenna and the traditional radar sensing system ( figure 1 As shown), the base frequency antenna is highly isolated in frequency and polarization direction, so the harmonic receiving circuit in a harmonic tag-assisted enhanced hybrid radar sensing system described in the present invention does not affect the traditional radar sensing system circuit, and can be used in traditional radar sensing systems. On the basis of the normal operation of the perception system, the purpose of enhancing the perception ability of the hybrid radar system with the help of harmonic tags is realized. image 3 Shown is traditional harmonic label A, for enhanced third harmonic generation, Figure 4 A quarter-wavelength short-circuit branch is introduced to suppress the generation of the second harmonic and enhance the self-mixing efficiency of the diode. However, the quarter-wavelength short-circuit b...

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PUM

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Abstract

The invention discloses a harmonic tag-assisted enhanced hybrid radar perception system, which includes a hybrid radar and a harmonic tag; the hybrid radar includes a traditional radar and a harmonic receiving circuit; the traditional radar is composed of a fundamental frequency transmitting and receiving circuit; the fundamental frequency transmitting circuit consists of Baseband oscillator, coupler, power amplifier, pulse generator, circulator, baseband filter and baseband antenna; baseband receiving circuit consists of baseband low noise amplifier, baseband mixer, ADC sampler and baseband Processing circuit composition; harmonic receiving circuit includes harmonic antenna, harmonic filter, harmonic low noise amplifier, harmonic mixer, harmonic oscillator, ADC sampler and baseband processing circuit; fundamental frequency and harmonic antenna pole The polarization direction is vertical; the harmonic tag converts the fundamental frequency into a harmonic, which is fed back through a duplexer and a dual-frequency dual-polarized antenna, and integrated with traditional radar to realize harmonic tag-assisted enhancement of hybrid radar perception.

Description

technical field [0001] The invention relates to the field of radar systems, in particular to a harmonic tag-assisted enhanced hybrid radar perception system. Background technique [0002] In recent years, radar perception systems have gradually moved from military applications to daily life, such as the detection of vital signs such as breathing and heartbeat. However, due to the limitation of electromagnetic wave propagation path loss and other factors, the system urgently needs to add additional circuits (harmonic tags) to assist in enhancing the radar perception capability. Contents of the invention [0003] Based on the above problems, the present invention proposes a harmonic tag-assisted enhanced hybrid radar perception system, which realizes a high degree of isolation between fundamental frequency transmission and harmonic reception to ensure the normal operation of the traditional radar perception system. At the same time, high-isolation harmonic feedback and harm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/88G01S7/02A61B5/08A61B5/024A61B5/0205
CPCA61B5/0205A61B5/024A61B5/08G01S7/02G01S13/88
Inventor 张浩许进阴玥
Owner NORTHWESTERN POLYTECHNICAL UNIV