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Angle Measurement and Recognition Method of Monopulse Radar Interference with Target and Decoy in Main Lobe

A single-pulse radar and single-pulse angle measurement technology, which is applied to radio wave measurement systems, instruments, etc., can solve the problems of no way to identify the correct target and low accuracy, so as to improve the accuracy of interference detection and identification, and enhance real-time performance , Improve the effect of angle resolution

Active Publication Date: 2018-07-06
UNIT 63892 OF PLA
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Problems solved by technology

However, these methods need to greatly improve the radar structure, or use multiple pulses to achieve the detection of interference, and the accuracy is not high, and even if the interference is detected in multiple pulse periods, there is no way to identify the correct target, so as to maintain effective angle tracking

Method used

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  • Angle Measurement and Recognition Method of Monopulse Radar Interference with Target and Decoy in Main Lobe
  • Angle Measurement and Recognition Method of Monopulse Radar Interference with Target and Decoy in Main Lobe
  • Angle Measurement and Recognition Method of Monopulse Radar Interference with Target and Decoy in Main Lobe

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation.

[0062] figure 1 It is a schematic diagram of a conventional monopulse radar antenna. The monopulse radar antenna consists of four antenna beams, covering the azimuth and elevation areas, arranged as shown in the figure. Four antenna units transmit and receive echo signals simultaneously, which can realize target orientation in two planes of azimuth and elevation.

[0063] figure 2 It is a structural diagram of the receiving front end of a conventional monopulse radar antenna. There are four antenna units and receiving channels to receive echo signals at the same time. When single-pulse angle measurement, a bridge circuit is usually used to form four channels of received signals into three channels, Σ signal (sum signal), Δ E signal (pitch difference signal) and Δ A signal (azimuth difference signal). While the Δ obtained by the diagon...

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Abstract

The invention relates to the technical field of radar signal processing and discloses an angle-measuring and identifying method for target and bait interferences in a main lobe of monopulse radar. The method comprises the following steps: with an improved radar receiver, extracting an echo signal of an opposite angle difference channel and judging if bait interference exists; with single target angle measurement and single pulse angle measurement for target and bait, identifying true and false target angles; and controlling an angle tracking gate of the monopulse radar according to the angle measurement output of a true target. According to the angle-measuring and identifying method provided by the invention, the receiver is used for extracting a double-difference signal and processing the signal, so as to realize the angle position estimation for two undistinguishable targets, complete bait interference detection and true target identification, increase the interference detection and identification accuracy and calculation efficiency and enhance the instantaneity of interference detection. The angle-measuring and identifying method provided by the invention has important practical significance in increasing the angle distinguishing capability of monopulse radar and improving existing target indication radar and tracking guidance radar and terminal guidance radar.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a method for measuring angles and recognizing interference of targets and decoys in a main lobe by a monopulse radar. Background technique [0002] Monopulse radar angle measurement is a relatively mature technology and is widely used in high-precision radar angle measurement systems. However, the angle spoofing interference of two sources with similar angles has brought serious threats to monopulse angle measurement systems. When there are two targets 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 synthesized and confused into one. Angle resolution cannot be performed, thereby destroying the radar angle tracking system. [0003] Active...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
CPCG01S7/41G01S7/414
Inventor 戴幻尧王建路周波乔会东张杨崔建岭张晓芬赵琳锋
Owner UNIT 63892 OF PLA
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