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A Containment Method of Strong Background Signal

A background signal and signal technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as inability to target signal detection, frequency domain influence, etc., and achieve the effects of low cost, concise logic, and simplified design

Active Publication Date: 2019-02-15
航天科工微系统技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Electromagnetic signal passive reconnaissance equipment has many advantages as passive reconnaissance equipment. The frequency domain is greatly affected, and the target signal cannot be detected

Method used

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  • A Containment Method of Strong Background Signal

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Experimental program
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Effect test

Embodiment

[0017] There is an X-band radar 1km away from the receiving equipment, and the output power of the transmitter is P t =70dBm (10kW), transmitting antenna gain G t =36dB, the ratio of the main and side lobe of the transmitting antenna R=40dB, the gain of the receiving antenna G r =20dB.

[0018] First calculate the space loss, calculate at 8GHz, and get the space loss P of 1km L =111dB, then the signal power P behind the receiving antenna r =P t + G t –R t –P L + G r = -25dBm. The instantaneous dynamic range of the detection equipment is -40dBm~-70dBm, and the threshold value is -31dBm to design a large signal rejection circuit, and the signal receiver greater than -31dBm is turned off and will not be received;

[0019] In addition, through the feeder injection method, the radar pulse signal of one's own side is obtained, and repeated frequency tracking is performed, and only the signal when the pulse is low;

[0020] For the sorted signal, it is compared with the o...

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PUM

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Abstract

The invention discloses a strong background signal containing method. Strong background signals generated by the self radar are isolated and sorted in space and time domains. The method of the invention has the advantages that the hardware part is concisely and efficiently designed, the cost is extremely low, and the software part has concise logic and is convenient to realize. The strong background signal can be contained simply and effectively, and needed target signals can be obtained.

Description

technical field [0001] The invention relates to a containment method for strong background signals, belonging to the technical field of electronic countermeasure signal isolation. Background technique [0002] Electromagnetic signal passive reconnaissance equipment has many advantages as passive reconnaissance equipment. The frequency domain is greatly affected, and the target signal cannot be detected. Therefore urgently need a kind of method that can suppress this kind of strong background signal. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a containment method for strong background signals, which can be achieved by isolating and sorting the strong background signals generated by one's own radar in the airspace and time domain. the goal of. [0004] In order to solve the above-mentioned technical problems, the present invention provides a method for containing st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 张昊寿文伟朱成林
Owner 航天科工微系统技术有限公司