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Civil aviation ground-air communication self-adaptive disturbance restraining method based on the constant mode array and its system

An interference suppression and self-adaptive technology, applied in the field of civil aviation ground-to-air communication, can solve problems such as the inability to essentially remove civil aviation ground-to-air communication interference, and achieve the effect of eliminating external constant modulus interference, eliminating flight safety hazards, and solving interference problems.

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

Neither of these two technologies can essentially eliminate interference in civil aviation ground-to-air communications

Method used

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  • Civil aviation ground-air communication self-adaptive disturbance restraining method based on the constant mode array and its system
  • Civil aviation ground-air communication self-adaptive disturbance restraining method based on the constant mode array and its system
  • Civil aviation ground-air communication self-adaptive disturbance restraining method based on the constant mode array and its system

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Embodiment Construction

[0025] The specific embodiments of the civil aviation ground-air communication adaptive interference suppression method and system based on the constant modulus array of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] The method of the present invention fully considers that the ground-air communication system is rarely subject to two or more interferences at the same time, and that the noise power is far lower than the interference and useful signal power and can be ignored, so a dual-channel receiving system is adopted. Starting from the statistical independence of the interference signal and the useful signal, the adaptive suppression of interference is realized by processing the signals received by the two receiving channels. Specifically, the civil aviation ground-air communication adaptive interference suppression system based on the constant modulus array shown in Figure 1 is used to adaptively suppress the i...

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Abstract

The invention relates to civil aviaton groud air communication self-adapting interference suppression method and its system based on the lasting model array, including the following steps: translate the bi-aerial wire array received two path high frequency amplitude modulation signals into the medium frequency signal; and carries on data capture and analog-to-digital convert; carries on the digital down-conversion filtering drawoff; sends the drawoffed signal into the monitoring model to judge, if no interference into the demodulation, has the interference to enter the interference signal drawoff; sends the interference signal into the self-adapting lasting model interference suppression module to drawoff the interference signal and self-adapting cancellation; demodulates the state no interference signal and filters the high frequency noise to carry on D / A conversion output. Under no reference signal premise, the invention separates out the groud air communication useful signal of using the lasting model blind signal processing technogy and the self-adapting interference cancellation technogy, removes the flight safety hidden danger, outputs the high quality pronunciation signal, enhances the flight safety coefficient, achieves the goal of taking stopgap measure and effect a permanent cure.

Description

technical field [0001] The invention relates to a civil aviation ground-air communication method. In particular, it relates to a civil aviation ground-air communication adaptive interference suppression method and system based on a constant modulus array that can improve the quality of civil aviation ground-air communication, ensure flight safety, and can also be used in other communication systems to improve receiving performance. Background technique [0002] Civil aviation VHF (very high frequency) ground-to-air communication plays an important role in the air traffic management system, and its stability and reliability directly affect flight safety. The VHF ground-to-air communication station adopts DSB-AM (double sideband amplitude modulation with carrier), half-duplex communication working mode, the working frequency range is 118.0MHz to 136.975MHz, the channel spacing is 25KHz, and can provide 760 communication channels. Channels can be multiplexed over wide geograph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10H04B7/04H03G3/34
Inventor 吴仁彪马健丽王淑艳胡铁乔钟伦珑黄建宇石庆研
Owner CIVIL AVIATION UNIV OF CHINA
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