Method and system for setting mute threshold of civil aviation receiver

Abstract

The present invention provides a method and system for setting the mute threshold of a civil aviation receiver, the method comprising the following steps: obtaining an internal noise signal of the receiver, and obtaining a noise floor correction coefficient of the receiver according to the internal noise signal; obtaining According to the calibration signal received by the receiver, the quality information correction coefficient of the receiver is obtained according to the calibration signal; the mute threshold of the receiver is set according to the noise floor correction coefficient and the quality information correction coefficient. The present invention obtains correction coefficients by correcting the receivers, so as to ensure that the mute thresholds of different receivers are set accurately, so that the mute control is not affected by individual differences in hardware. The method of the present invention is simple, high in accuracy, and easy to implement , can be widely used in the field of civil aviation.

Description

【Technical field】 [0001] The invention relates to the field of civil aviation communication, in particular to a method and system for setting a mute threshold 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...

AI Technical Summary

Problems solved by technology

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

Therefore, the mute thresholds set in the above two mute methods are affected by individual differences in receiver hardware, and there are defects in the mute threshold error, and the accuracy is not high.

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