摘要
为了提高机场超短波电台的校波效率,解决当前机场电台校波工作效率低、准确性差、校波时间长以及人力成本大等问题,提高飞行中的对空指挥通信的可靠性,研制一个基于ARM技术的电台自动校波装置,通过电台的控制接口来控制两部电台,按照飞行校波的流程和方法,在飞行之前对电台实施自动校波。在研究分析该型电台通信协议的基础上,利用ARM设计的中控电路实现电台波道转换、收发交替转换、标准音频信号产生、音频质量分析以及校波结果存储与显示等功能,运用平均主观打分(Mean Opinion Score,MOS)五级评价机制,建立语音质量感知评估(Perceptual Evaluation of Speech Quality,PESQ)主观模型,自动分析电台各波道收发音频的质量,从而实现电台自动校波。实践表明,采用本装置对电台实行校波,能够达到自动校波、客观评价校波质量的要求,并大大提高校波的效率,缩短飞行准备的时间。
In order to improve the efficiency of airport radio wave calibration, solve the problems of low efficiency, poor accuracy, long time and large labor cost of the current airport radio wave calibration, and improve the reliability of air command communication in flight, through the control interface of the radio, an ARM-based radio automatic wave calibration device is installed between the two radios, and in accordance with the process and method of flight calibration, the radio is automatically calibrated before flight. On the basis of the research and analysis of this type of radio communication protocol, the ARM central control circuit is used to realize the functions of radio channel conversion, transceiver conversion, standard audio signal generation, audio quality analysis, and storage and display of calibration results, and uses the five-level Mean Opinion Score(MOS) value evaluation mechanism currently used by the airport tower operator to establish a PESQ subjective voice quality evaluation model to automatically analyze the quality of the radio channel transceiver audio, so as to realize the automatic radio wave calibration. Practice has shown that the use of this device to calibrate the radio can meet the requirements of automatic wave calibration and objective evaluation of the quality of the calibration wave, and greatly improve the efficiency of the calibration wave and shorten the time for flight preparation.
作者
张琪
田华明
郭维波
ZHANG Qi;TIAN Huaming;GUO Weibo(Qingdao Branch,Naval Aviation University,Qingdao 266041,China)
出处
《电声技术》
2022年第4期108-112,共5页
Audio Engineering
关键词
超短波通信
自动校波
收发转换
标准音频信号产生
ultrashort wave communication
automatic wave calibration
transceiver conversion
standard audio signal generation
