地面折射 meaning in English

terrestrial refraction

The multipath interference , resulted from interfering between the signals of the line of sight ( los ) and the line of ground reflection in vhf - rc , makes bit error rate of data transmission increased and system reliability attenuated
当前，中国水波中继信道以直视路径传播为主，同时存在地面折射路径对直射信号产生干涉，造成多径干扰。这种干扰使得信号传输的误码率上升，系统可靠性下降。