摘要
民航地空通信音频信号传输过程中,话音信号在不同设备的输入输出接口之间传递,期间经过多次模数/数模转换,信号电平值及接口参数设置影响话音质量。民航地空通信及传输设备普遍要求冗余配置,模拟音频接口线路经常使用简单并联的方式,此时设备默认参数并非最优设置,投产运行后也不便开展大范围测试优化。本文根据电路理论,分析音频电平在多个地空通信设备并联负载接口间的能量分配规律,提出一种确定设备合理参数以实现前后级电平匹配的设置方法,可用于设备安装联调及优化。
Audio signal is transmitted between input-output interfaces of civil aviation air to ground communication devices by analog-to-digital conversion or vice versa.The analog signal power and the device parameter both take effect on communication quality.It is common that redundant communication or transmission equipment input-output interfaces are in parallel as one load to an output circuit.In this case,default parameter is hardly optimal,while the whole system is difficult to be adjusted once construction completed.By discussing how the audio signal power is distributed between the output and input circuits loads,it is proposed a feasible and reasonable parameter setting method for level matching,which is effective in construction and improving process.
作者
韩泽宇
Han Zeyu(Chongqing Jiangbei International Airport Co.,Ltd.,Chongqing 401120 China)
出处
《中国民航飞行学院学报》
2022年第6期59-63,共5页
Journal of Civil Aviation Flight University of China
关键词
地空通信
音频接口
电平
参数设置
能量分配
Air-ground communication
Audio interface
Level Configuration
Power distribution
