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ADS-B weak signal detection device and method based on multi-feature fusion

A weak signal detection, ADS-B technology, applied in the field of signal processing, can solve the problems of low signal detection rate, target signal fluctuation, single use of signal feature information, etc., to reduce redundant information between features and improve detection performance. , to solve the effect of low reliability

Pending Publication Date: 2020-11-17
CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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Problems solved by technology

However, in the actual complex electromagnetic environment, the single feature of the target signal often fluctuates, weakens, is interfered, or even disappears. A single threshold processing technology cannot meet the extraction needs of ADS-B weak signals, resulting in signal The detection rate is not high or even impossible to detect
[0006] The existing technology only uses signal feature information, and has insufficient detection ability for ADS-B weak signals, and it is difficult to effectively meet the perception requirements for air situation information and aircraft identity information under strong noise conditions

Method used

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  • ADS-B weak signal detection device and method based on multi-feature fusion

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[0067] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0068] like figure 1 As shown, an ADS-B weak signal detection device based on multi-feature fusion includes a signal acquisition module, a feature extraction module and a signal detection module connected in sequence;

[0069] The signal acquisition module is used to acquire the periodic broadcast ADS-B pulse signal to be detected, and divide it into signal segment and noise segment;

[0070] The feature extraction module...

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Abstract

The invention discloses an ADS-B weak signal detection device and method based on multi-feature fusion. According to the ADS-B weak signal detection method and device based on multi-feature fusion, the conventional mode that an existing signal detection system mainly takes energy features of signals as the basis and adopts threshold detection is broken through, multi-feature information containedin received signals are utilized to solve the problem that the detection performance is reduced due to weakening of the target signal state information under a strong noise interference condition.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to an ADS-B weak signal detection device and method based on multi-feature fusion. Background technique [0002] ADS-B broadcast automatic dependent monitoring system is a technical method widely used in air traffic control. It combines satellite navigation, communication technology, data link, airborne equipment and ground equipment to provide a safer and more efficient Aerial surveillance means can effectively expand surveillance coverage and provide controllers and pilots with detailed air vehicle status information. [0003] With the gradual intensification of human electromagnetic space activities and the relaxation of regulations in low-altitude areas around the world, the space electromagnetic environment is becoming increasingly complex and deteriorating. Since the ADS-B system works in an omnidirectional broadcast mode, it is extremely vulnerable to various envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G5/00G06K9/62
CPCG08G5/0073G06F18/2411
Inventor 杨阳王海波曹东赵杨刘林岩卢德勇李保山
Owner CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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