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ADS-B airborne anti-interference receiving and processing method

An airborne equipment and signal technology, applied in radio transmission systems, electrical components, transmission systems, etc., can solve problems such as low noise and large signals, low signal strength, coupling, etc., to ensure signal reception, deal with interference and superposition, ensure The effect of accuracy

Inactive Publication Date: 2017-01-04
中电科西北集团有限公司
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Problems solved by technology

[0005] The present invention provides an ADS-B airborne anti-jamming receiving and processing method to solve the problems of low signal strength, low noise, and signal coupling with transmitters in the signals received by ADS-B airborne equipment in the prior art. question

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[0022] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The embodiment of the present invention discloses an ADS-B airborne anti-jamming receiving and processing method, referring to figure 1 As shown, the method includes:

[0024] After the ADS-B airborne equipment receives the signal, it judges whether the signal is superimposed;

[0025] If not, performing dynamic threshold threshold setting and shaping preprocessing on the signal in sequence to obtain a processed signal;

[0026] Perform preamble pulse detection on the signal, and calculate the reference power level of the signal after the detection is passed, and then verify the signal according to the reference power level;

[0027] After passing the verification, the signal is subjected to data bit extraction and confidence ...

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Abstract

The present invention provides an ADS-B airborne anti-interference receiving and processing method. The method comprises the following steps: judging whether a signal has a superposition situation or not after ADS-B airborne equipment receives the signal; if not, sequentially implementing dynamic threshold setting and shaping preprocessing on the signal to obtain a processed signal; implementing preamble pulse detection on the signal, calculating a reference power level of the signal after the detection is qualified, and then verifying the signal according to the reference power level; and then implementing data bit extraction and confidence calculation processing on the signal after verification, and outputting data bit contents and data location confidence of the signal. According to the ADS-B airborne anti-interference receiving and processing method provided by the invention, full and comprehensive verification processing solutions can be provided for various existing situations of space signals; interference, superposition and other problems of the space signals can be effectively solved; and the accuracy of the received signals can be ensured.

Description

technical field [0001] The invention relates to the technical field of digital signal processing, in particular to an ADS-B airborne anti-jamming receiving and processing method. Background technique [0002] Automatic Dependent Surveillance-Broadcast (ADS-B for short) technology is an aircraft operation monitoring technology based on satellite positioning and ground / air data link communication. Compared with traditional radar surveillance technology, ADS-B technology has obvious advantages such as low cost of use, small accuracy error, and strong surveillance capability, and it also has broad application prospects for air traffic services in high-density flight areas. [0003] The ADS-B system can be divided into airborne equipment and ground equipment according to equipment. The current ADS-B equipment has three data link modes: 1090ES mode based on S mode, UAT mode and VDL-4 mode. At present, the ADS-B airborne equipment that is more widely used is a self-correlation mon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10H04B1/12H04B7/185
CPCH04B7/18502H04B1/109H04B1/12
Inventor 王涛贺星李军焕
Owner 中电科西北集团有限公司
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