ADS-B deception jamming restraining method based on cross array

A deceptive jamming and cross array technology, which is applied in the field of ADS-B deceptive jamming suppression based on cross array, can solve the problem of little research in the field of anti-jamming, and achieve the effect of high resolution and suppressing deceptive jamming.

Inactive Publication Date: 2015-02-18
CIVIL AVIATION UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are not many researches in the field of ADS-B anti-interference at home and abroad, and an effective ADS-B deceptive interference suppression method is urgently needed

Method used

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  • ADS-B deception jamming restraining method based on cross array
  • ADS-B deception jamming restraining method based on cross array
  • ADS-B deception jamming restraining method based on cross array

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Embodiment Construction

[0021] The cross-array-based ADS-B deceptive interference suppression method provided by the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0022] Such as figure 1 As shown, the spoofing interference transmitting device 1 may broadcast any false position information, thereby causing the ADS-B receiver 2 to mistakenly believe that there is a target in the position where there is no real target; the cross array antenna can be used to form a null trap in the direction of the target, so as to Signals in this direction are suppressed, so that it is easy to distinguish between real signals and deceptive interference (the array antenna in the figure is only a schematic diagram, and a cross array antenna is used in practical applications. The antenna array model is as follows figure 2 shown). Such as image 3 As shown, the ADS-B spoofing interference suppression method based on the cross array provided by the p...

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Abstract

The invention discloses an ADS-B deception jamming restraining method based on a cross array. The method includes: using an ADS-B receiving machine to analyze the target identity information and air position information received by a central array element of an antenna array; converting the target position information into the target azimuth angle and pitching angle further by the aid of the position of the receiving machine; projecting the received data to the orthogonal complement space of a target, and restraining the signals, with the coming direction of (theta, phi), in the data received by the antenna array; using the ADS-B receiving machine to process the data after orthogonal projection, and identifying the identify information of the target; judging the actual target and deception jamming according to a deception jamming judging algorithm, and the like. After jamming identification and restraining by the method, the ADS-B receiving machine can obtain real ADS-B signals through demodulation, deception jamming is restrained, and airspace monitoring is achieved.

Description

technical field [0001] The invention belongs to the technical field of ADS-B interference suppression, in particular to an ADS-B deceptive interference suppression method based on a cross array. Background technique [0002] Automatic Dependent Surveillance-Broadcast (ADS-B) is an aircraft surveillance technology based on global satellite navigation system and ground-air, air-air data link communication. Technology, the monitored target (including aircraft or ground vehicles) broadcasts its own position, flight intention, self-identification, etc. Compared with traditional radar surveillance technology, ADS-B not only has a high information update rate (ADS-B data update interval can reach 1 second, while traditional radar data update interval is 4-12 seconds), but also has high positioning accuracy (ADS-B positioning The accuracy can reach the meter level, while the accuracy of traditional radar is more than hundreds of meters), and the price is cheap and the installation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36G01S13/91
CPCG01S7/36G01S13/91
Inventor 王文益陈庚吴仁彪卢丹王璐贾琼琼
Owner CIVIL AVIATION UNIV OF CHINA
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