Mute method and system for civil aviation receiver

Abstract

The invention provides a method and a system for muting a civil aviation receiver. The method comprises the steps of acquiring energy of carrier signals in received signals; acquiring a radio-frequency channel gain coefficient and a correction coefficient of the receiver; acquiring a quality parameter of the received signals according to the energy of the carrier signals, the radio-frequency channel gain coefficient and the correction coefficient; and carrying out muting treatment on the received signals when the quality parameter meets a muting condition. According to the invention, muting conditions of different receivers are ensured to be accurate through acquiring a correction parameter of the receivers, thereby enabling the receiver not to be affected by individual differences of hardware. According to the method and the system provided by the invention, a muting function of the receiver can be accurately realized, and the error of a muting threshold is less than 1dB, thereby meeting requirements of civil aviation communication.

Description

【Technical field】 [0001] The invention relates to the field of civil aviation communication, in particular to a method and system for mute of a civil aviation receiver. 【Background technique】 [0002] Civil aviation ground-to-air communication is an important means for air traffic control departments to talk to the air, command, deploy various flight tasks, and ensure flight safety. It is also a necessary way for airlines to implement aviation management communications and maintain command and contact with aircraft. In order to better ensure communication effects and solve problems such as cross coverage, civil aviation receivers should turn off the sound of the receiver when the signal is weak and the noise is high, so as to mute the received signal. [0003] The current mute methods mainly include carrier mute and voice mute. The carrier mute method is affected by individual differences in hardware. It is difficult to achieve the same mute threshold for different receivers...

AI Technical Summary

Problems solved by technology

[0003] The current mute methods mainly include carrier mute and voice mute. The carrier mute method is affected by individual differences in hardware. It is difficult to achieve the same mute threshold for different receivers. In actual tests, there is an error of 1 to 10dB in the mute threshold; It can roughly judge whether there is a signal or no signal, and the error is even greater. In the actual test, the error is as high as 20dB

Therefore, both of the above two muting methods have defects, and the accuracy is not high, which will cause signals that do not meet the requirements to be released or signals that meet the requirements to be muted, thereby affecting the communication effect of civil aviation, especially in the cross-coverage area.

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