Array non-linear object detection system and method

A target detection and nonlinear technology, which is applied in the field of array nonlinear target detection system, can solve the problems of receiving and utilizing spatial information without considering harmonic signals.

Inactive Publication Date: 2015-08-19
上海海潮新技术研究所
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The current nonlinear target detection methods do not consider the reception and utilization of harmonic signal space information, so it is difficult to solve the problem

Method used

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  • Array non-linear object detection system and method
  • Array non-linear object detection system and method
  • Array non-linear object detection system and method

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Experimental program
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Embodiment 1

[0030] Such as figure 1 As shown, the emission frequency of the array nonlinear target detector in this embodiment can be 800MHz and 900MHz dual frequency, which can be used to detect electronic targets, including:

[0031] A button control unit, connected to the signal processing unit, used for the user to issue an instruction to control the transmission power;

[0032] The signal processing unit is connected with the key control unit, the transmitting unit, the receiving unit and the display unit, and is used to receive the user control instruction of the key control unit, and control the transmitting unit to generate the required signal; at the same time, receive the array signal transmitted by the receiving unit, Transform the signal to the cumulant feature space and pass it to the display unit;

[0033] The display unit is connected with the signal processing unit, and is used for comprehensively displaying the cumulative feature space structure information of current an...

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Abstract

Provided are an array non-linear object detection system and a method. The system comprises an emission module arranged on the top of a detection container, and a reception module used to receive self-excited echo and a signal processing module arranged on the periphery of the detection container, the signal processing module being respectively connected with the emission module and the reception module. An emission antenna group comprises at least two emission antennas so as to emit two kinds of electromagnetic wave signals in different frequencies. A reception antenna array comprises at least five sub-antennas, so as to respectively receive echo signals in different frequency ranges at the same time. The system and the method can make full use of time and spatial information of electronic object scattering harmonic waves, and realize efficient detection of a weak harmonic signal object in a noise environment.

Description

technical field [0001] The invention relates to a technology in the field of metal detection, in particular to an array type nonlinear target detection system and method. Background technique [0002] Artificial metal structure objects (mainly including artificial metals and semiconductors) are different from objects in nature, and their volt-ampere characteristic curves have unique nonlinear characteristics, which are called nonlinear targets in the field of detection. Nonlinear targets can re-radiate to generate harmonics after being irradiated by microwaves. Among them, the energy of the third harmonic component of the man-made metal target is the largest, and the energy of the second harmonic component of the semiconductor target is the largest. The device that receives and uses the scattered harmonics of objects to detect specific targets is called a nonlinear target detector (or harmonic radar), and is currently widely used in important fields such as reconnaissance, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/12
Inventor 尹中航宋恒
Owner 上海海潮新技术研究所
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