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A decoy jamming detection method based on four-channel monopulse ratio statistical properties

A technology of decoy interference and detection method, which is applied in the directions of radio wave measurement systems and instruments, and can solve problems such as difficulty in detecting decoy interference.

Inactive Publication Date: 2017-08-04
UNIT 63892 OF PLA
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Problems solved by technology

However, under interference conditions, the interference power is very strong, the interference is 45-degree linear polarization, the response in the two orthogonally polarized channels is consistent, and the output of the two channels is almost completely interference signals, which is difficult to detect bait interferes

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  • A decoy jamming detection method based on four-channel monopulse ratio statistical properties
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  • A decoy jamming detection method based on four-channel monopulse ratio statistical properties

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[0050] The present invention can be explained in detail through the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0051] combined with Figure 3-16 The described decoy interference detection method based on the statistical characteristics of the four-channel monopulse ratio improves the monopulse radar receiver, extracts four-channel echo signals, calculates the monopulse ratio MR according to the output signals of the four channels, and determines the interference detection method according to the experimental value. Threshold, to judge whether the monopulse ratio exceeds the threshold, once exceeded, the detection of decoy interference is completed; the detection method specifically includes the following steps:

[0052] 1. Add a radar receiver to extract the echo signal of the diagonal difference channel:

[0053] Remove the matching load of the bridge circuit, l...

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Abstract

A decoy jamming detection method based on four-channel monopulse ratio statistical properties relates to a decoy jamming detection method. A monopulse radar receiver is improved; four-channel echo signals are extracted; a single pulse ratio is calculated according to output signals of the four channels; a jamming detection threshold is determined according to an experimental value; whether the single pulse ratio exceeds the threshold is judged; and if the single pulse ratio exceeds the threshold, decoy jamming detection is completed. The invention can be applied to existing target indicator radars, tracking guidance radars, terminal guidance radars and the fire control radars. Jamming can be rapidly detected and corresponding anti-jamming measures can be started once a double-difference signal is drawn forth, thus having an important practical significance.

Description

technical field [0001] The invention relates to the technical field of radar electronic countermeasures, in particular to a decoy interference detection method based on statistical characteristics of four-channel monopulse ratio. Background technique [0002] It is well known that monopulse radar angle measurement is a relatively mature technology and is widely used in high-precision tracking radar systems. However, the angle spoofing jamming of two point sources with similar angles in the main radar beam has brought a serious threat to the monopulse angle measurement system. When there is a target and a decoy interference in the main lobe of the antenna, the output of the conventional monopulse angle measurement is the weighted average of the angles of the two targets in the physical space, which cannot give the correct angle indication, and the angle measurement values ​​of the two targets are combined and confused. For one, the angle resolution cannot be performed, which...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 王建路戴幻尧曾勇虎韩慧许雄周波乔会东刘文钊张杨
Owner UNIT 63892 OF PLA
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