Selection of Communication Frequency Points for Shortwave Radio Network Based on VOACAP

In the past, it was difficult and unscientific to select the frequency of shortwave communication. Aiming at a specific problem, this paper proposes a frequency selection scheme for shortwave communication network, and calls the frequency selection software VOACAP to collect the input parameters such as the longitude and latitude of the receiving and transmitting ground, and calculates the output parameters such as the point-to-point frequency and antenna angle by using the sunspot data of the past few cycles. The calculation results are combined with the frequency selection scheme to select the final network frequency. In addition, the parameters such as the height of the antenna can guide the follow-up communication work. Communication organizations use this method to select the communication frequency of shortwave networking, which reduces the work intensity and greatly improves the communication passability.