HFDL signal receiving and processing device

Abstract

The invention discloses an HFDL signal receiving and processing device. The device comprises a radio frequency receiving unit, a frequency conversion processing unit and a signal processing unit. Theradio frequency receiving unit is used for receiving short wave radio frequency signals of 1.5 MHz to 30 MHz, filtering the received radio frequency signals to remove interference signals outside theworking frequency band, carrying out adaptive gain adjustment, and sending the gain-adjusted radio frequency signal to the frequency conversion processing unit. The frequency conversion processing unit is used for upconverting the radio frequency signal to an intermediate frequency signal of 70 MHz, and sending the intermediate frequency signal to the signal processing unit. The signal processingunit is used for sampling the intermediate frequency signal to acquire a digital signal, digitally downconverting, detecting, demodulating and Turbo-equalizing the digital signal, encapsulating the processed data, and sending the data to a host computer through a network interface. According to the invention, HFDL signals are received and processed; the HFDL signal receiving and processing devicehas the advantages of simple structure, small size, low cost, portability, convenient deployment, unlimited deployment number, long interception distance and large dynamic range; and intercepted signals have the advantages of comprehensive type and excellent performance.

Description

technical field [0001] The invention relates to the field of shortwave communication signal processing, in particular to an HFDL signal receiving and processing device. Background technique [0002] High-frequency data link technology (abbreviation, HFDL) is a protocol cluster of aircraft communication addressing and reporting system (abbreviation, ACARS) air-to-ground data communication working in the short-wave frequency band, which is used to transmit flight data and instructions between aircraft and airline ground bases. The whole ACARS system consists of three parts: airborne equipment, ground service network and airline operation center, and the airborne equipment is composed of management components, control components and HF radio stations. The advantage of the ACARS system is that it can shorten the preparation time for the flight, better monitor the aircraft and improve the utilization rate of the aircraft, and its main applications are: report flight number, latit...

AI Technical Summary

Problems solved by technology

At present, most imported HFDL special monitoring equipment receives and processes HFDL signals by customized signal receiving and processing machines. The disadvantages are that the equipment is large in size, expensive, complex in operation, inconvenient to deploy and limited in number of deployables, etc.

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