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Communication access method based on coarse direction finding by multi-beam radar

A communication access, multi-beam technology, which is used in direction determination direction, radio wave measurement system, measurement device, etc., can solve the problems of low efficiency of rough direction finding, inability to meet fast direction finding, and inability to lock the target.

Active Publication Date: 2017-12-22
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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Problems solved by technology

This method requires the radar to scan for a week to determine the orientation of the radiation source. It cannot lock the target when the radar beam is aimed at the radiation source for the first time. The efficiency of rough direction finding is low, and it cannot meet the requirements of fast direction finding in high-performance radar systems. Require

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  • Communication access method based on coarse direction finding by multi-beam radar
  • Communication access method based on coarse direction finding by multi-beam radar

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Embodiment Construction

[0008] Schematic diagram of multi-beam scanning figure 1 shown. In a beam coverage scan, there are a total of N receiving beams, two of which are critical beams, covering the boundary of the angle. The beam coverage of the first scan is numbered 1 to N in the figure, among which the receiving beam with the beam number 1 and N is the critical beam, the number of effective coverage beams is N-2, and the beam number is 2 to N-1; the next time The scanning beam coverage range is numbered N-1 to 2N-2 in the figure, among which the receiving beams with beam numbers N-1 and 2N-2 are critical beams, and the number of effective coverage beams is N-2, and the beam numbers are N~2N -3.

[0009] The flow chart of rough direction finding based on multi-beam radar is as follows: figure 2 shown. First, the radar performs radiation source parameter matching and amplitude calculation on N receiving beams to continuously cover the azimuth range of M degrees. Then the amplitude values ​​of...

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Abstract

The invention provides a communication access method based on coarse direction finding by multi-beam radar, and relates to a quick coarse direction finding technology based on multi-beam radar. By introducing an auxiliary beam, whether a radiation source target is within the coverage of the current beam can be decided quickly, and the efficiency of radiation source direction finding is improved. The situation in which the beam sidelobe is aligned with the radiation source is eliminated according to the main-to-side lobe ratio characteristic of the radar beam, and thus, a multi-beam coarse direction finding method is realized. There is no need for the radar to scan a whole circle. As long as the radiation source target is within the coverage of the current beam, the location of the radiation source can be roughly determined. The coarse direction finding efficiency of multi-beam radar is greatly improved.

Description

technical field [0001] The present invention relates to radar coarse technology. Background technique [0002] With the development of electronic countermeasures technology, the requirements for radar performance are getting higher and higher in modern warfare. When the radar is performing passive detection, it generally uses the method of the maximum amplitude of the circular scan to conduct rough direction finding of the radiation source. That is, after the radar scans for one week, select the azimuth and amplitude information that meets the parameters of the radiation source (carrier frequency, repetition frequency, pulse width, etc.), and find out the azimuth corresponding to the maximum amplitude, so as to complete the rough direction finding of the radiation source . This method requires the radar to scan for a week to determine the orientation of the radiation source. It cannot lock the target when the radar beam is aimed at the radiation source for the first time. ...

Claims

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Application Information

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IPC IPC(8): G01S3/00
CPCG01S3/00
Inventor 张晗陈文攀周升国黄镠
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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