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Fully-polarized radar life detection and positioning method

A life detection and positioning method technology, applied in measurement devices, radio wave measurement systems, radio wave reflection/re-radiation, etc. problem, to achieve the effect of simple principle, enhanced target echo, and easy operation

Inactive Publication Date: 2020-08-07
湖南正申科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] (1) The radar polarization direction is single;
[0018] (2) The target miss rate is high;
[0019] (3) Radar anti-noise ability is weak

Method used

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  • Fully-polarized radar life detection and positioning method
  • Fully-polarized radar life detection and positioning method
  • Fully-polarized radar life detection and positioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: as figure 1 Shown, a kind of fully polarized radar life detection positioning method of the present invention, it comprises:

[0039] Step S1: The monostatic radar uses an all-polarization microstrip antenna as a transmitting antenna and a receiving antenna; full-polarization detection is realized on the hardware side.

[0040] Step S2: When the monostatic radar is working, use the fully polarized transmitting antenna to transmit electromagnetic waves to detect the measured area;

[0041] Step S3: using the fully polarized receiving antenna to receive the scattering waveform of the target;

[0042] Step S4: Perform preprocessing on the received signal in step S3, calculate the polarization scattering matrix, invert and estimate the time delay, and finally obtain the target information.

[0043] After adopting the above method, the present invention increases the echo intensity of the detection target and improves the detection probability of the life det...

Embodiment 2

[0044] Embodiment 2: as figure 2 As shown, the present invention uses two or more life detection radars to combine and deploy a network for life detection. That is, a distributed radar is composed of more than two life detection radars equipped with fully polarized microstrip antennas and a main control radar, and the fully polarized transmitting antenna is used to emit electromagnetic waves to detect the measured area.

[0045] During the working process of the distributed radar, each life detection radar will emit a multi-polarization waveform or a single-polarization waveform to detect the detected area.

[0046] During the working process of the distributed radar, each life detection radar uses a fully polarized receiving antenna to receive signals.

[0047] After each life detection radar receives the signal, each life detection radar processes the echo signal to obtain target information.

[0048] Finally, the obtained target information is transmitted to the main con...

Embodiment 3

[0049] Embodiment 3: as image 3As shown, in this example, the present invention takes two assembly single-polarization antenna life detection radars as an example to form a distributed radar, that is, when two assembly single-polarization antenna life detection radars form a distributed radar to work, one of them The life detection radar equipped with a single-polarization antenna is rotated by 90°, so that the polarization directions of electromagnetic waves emitted by two life detection radars equipped with a single-polarization antenna are orthogonal to each other. Each life detection radar equipped with a single-polarization antenna receives the waveform emitted by itself and performs target detection, achieving the effect of multi-polarization antenna detection targets. Extending this type of working mode to the joint work of multiple single-polarization radars, each radar rotates at different angles, so that the polarization directions of the electromagnetic waves emitt...

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Abstract

The invention discloses a fully-polarized radar life detection and positioning method, which comprises the following steps of: transmitting electromagnetic waves in a fully-polarized antenna mode to detect a detected area, and then receiving a scattering waveform of a target in the fully-polarized antenna mode; next, performing preprocessing through the received signals, solving a polarization scattering matrix, estimating time delay through inversion, and finally obtaining target information. The method has the advantages that the operation is simple and convenient, the application range is wide, multiple antenna polarization modes are adopted, the echo intensity of a detection target can be enhanced, and the life detection radar detection probability can be improved.

Description

technical field [0001] The invention mainly relates to the technical field of radar life detection equipment, in particular to a full polarization radar life detection and positioning method. Background technique [0002] After natural disasters such as earthquakes, landslides, and landslides occur, people who have not been evacuated in the affected area will be buried under ruins and soil. It is of great significance for post-disaster rescue to quickly search the disaster area and accurately locate the buried personnel. Compared with infrared, optical, and audio life detectors, radar life detection equipment has the characteristics of strong penetration and large detection depth. It is currently the main instrument and equipment for post-disaster detection of various fire rescue forces. [0003] When the radar is working, the life detection radar emits electromagnetic waves of a certain polarization mode. After being reflected by a target at a certain position, the radar r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88G01S7/02
CPCG01S13/887G01S7/024
Inventor 金养昊周伟袁雪林胡志辉
Owner 湖南正申科技有限公司
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