Civil aviation ground-air communication self-adaptive disturbance restraining method based on the single channel and its system

An interference suppression and self-adaptive technology, applied in the direction of modulated carrier system, transmission system, digital transmission system, etc., can solve difficult technical and method problems, achieve low cost, broad market application prospects, and improve the effect of anti-interference performance

Inactive Publication Date: 2007-09-12
CIVIL AVIATION UNIV OF CHINA
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Problems solved by technology

This conflicts with the existing VHF ground-to-air communication station using a single ante

Method used

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  • Civil aviation ground-air communication self-adaptive disturbance restraining method based on the single channel and its system
  • Civil aviation ground-air communication self-adaptive disturbance restraining method based on the single channel and its system
  • Civil aviation ground-air communication self-adaptive disturbance restraining method based on the single channel and its system

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[0027] The single-channel-based civil aviation ground-air communication adaptive interference suppression method and system thereof of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] In order to further understand the present invention, below in conjunction with the technical characteristics of the civil aviation VHF (very high frequency) ground-to-air communication station, the specific implementation process of the present invention is given a detailed introduction.

[0029] The technical characteristics of VHF ground-to-air communication devices are specified in Volume I of Annex 10 of the International Convention. The radio adopts DSB-AM (double sideband amplitude modulation with carrier) and half-duplex communication. Its operating frequency range is 118.0MHz to 136.975MHz, and the channel spacing is 25KHz. It can provide 760 communication channels. These channels can be used in Reuse i...

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Abstract

The invention relates to civil aviaton groud air communication self-adapting interference suppression method and its thesystem based on the single channel, including: translate the aerial wire received high frequency amplitude modulation signal into the medium frequency digital signal; and carries on medium frequency estimate after filter drawoff; carries on self-adapting trapped wave to trap the carrier wave in the amplitude modulation signal; thus carries on the orthogonal transform; taking the lasting model interference signal after the orthogonal transform; implement cancellation and carries on demodulation, again output the aural signal after filter the high frequency clutter. The invention considered the interference source characteristic of the civil aviaton groud air communication and the actual question, with the existing broadcasting station structure, does not increase the receiving antenna, does not use any reference signal, uses the self-adapting signal processing method can cancel the exterior permanent mold disturbance of serious influence broadcasting station receptivity, provided the anti-jamming ability of the civil aviaton groud air communication.Tend to maintain and to promote. Also may use in other amplitude-modulation receivers, enhances the receptivity.

Description

technical field [0001] The invention relates to a single-channel self-adaptive interference suppression method for civil aviation ground-air communication. In particular, it relates to a single-channel-based adaptive interference suppression method and system for civil aviation ground-air communication that conforms to the existing civil aviation ground-air communication system, is simple to implement and has excellent performance, can improve communication quality, and enhance flight safety factor. Background technique [0002] According to Volume I of Annex 10 of the International Civil Aviation Organization Convention, in air traffic control, the contact between ground controllers and air pilots mainly relies on VHF (very high frequency) ground-to-air communication stations, which use AM (amplitude modulation) work Way. The advantage of amplitude modulation is that it occupies a narrow frequency band, saves frequency resources, and is easy to implement with hardware. The...

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Application Information

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IPC IPC(8): H04B1/10H04L27/00H04B7/04
Inventor 吴仁彪黄建宇钟伦珑胡铁乔马健丽张良霍振飞王一鸣
Owner CIVIL AVIATION UNIV OF CHINA
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