Modulation and demodulation method and device for digital identity information of ground-to-air wireless communication

Abstract

The invention discloses a method for modulating and demodulating digital identity information of ground-to-air wireless calls. It is detected that the PTT switch is pressed, and it is in the state of audio transmission, and the digital identity information at the modulation sending end is audio, and the digital identity information includes identity information and call information. Serial number information, load the modulated audio at the beginning or end of the call audio; according to the detection of the PTT switch being released, it is in the audio receiving state, receives the ground-air radio audio, and demodulates it to obtain digital identity information, and according to the configured parameters send it out. On the premise of not affecting the normal ground-to-air wireless voice communication, the present invention adds digital identity information to the communication voice in real time, increases the digital identity recognition capability in the original analog communication channel, and uses it to identify the caller's identity and call in real-time communication and post-analysis The order is convenient for judging the risk of "mistakes, forgetting, and missing" security incidents that are prone to occur in the use of half-duplex communication stations, and improves the security of command calls.

Description

Technical field [0001] The present invention relates to the field of ground empty calling, in particular, modulation and demodulation methods and apparatus for digital identity information of airline wireless call. Background technique [0002] The existing air tube command mode is a man's circuit mode, that is, the controller is based on the real-time empty situation of the air-tube automation system (ATC), and the real-time empty situation, the flight plan, meteorological information, etc., relies on the air VHF radio. Dialogue mode for command control. [0003] Controller and pilots are executed in accordance with the "Air Traffic Radio Call" (MH / T 4014-2003) ". The air call is generally widely used in a radio call (VHF / HF), which is widely used due to its stability and reliability. For example, a common VHF station, 25kHz bandwidth, amplitude modulation (AM) simulation method. One party requiring a call is speaking on the PTT (Push To Talk) switch of the Grounding Radio o...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a modulation and demodulation method and device for ground-air wireless communication digital identity information in view of the problems in the prior art that the cost of uplink and downlink communication is high, voice data are mixed together, and cannot be distinguished intuitively. The invention can load the identity identification audio into the call audio at the audio sending end without affecting the normal voice call, and can also load the call sequence number audio, receive and demodulate at the audio receiving end, and obtain the identity information of the caller and the call time. Label and other information, easy to distinguish and store call data

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