CAJ | 학술논문

文中针对短波通信联络中存在通信频率单向通的问题，首先分析了影响电离层互易性的因素；然后采用ITS仿真软件进行了不同距离和不同方向的双向链路仿真。仿真结果表明同一通信频率在双向链路的传播模式、仰角、电离层反射高度完全一致，并分析了原因；最后在介绍了短波天波链路场强预测方法的基础上分析了系统发射功率、天线、本地噪声等各种影响因素，得出不同条件下短波通信频率互易性的结论。
문중침대단파통신련락중존재통신빈솔단향통적문제，수선분석료영향전리층호역성적인소；연후채용ITS방진연건진행료불동거리화불동방향적쌍향련로방진。방진결과표명동일통신빈솔재쌍향련로적전파모식、앙각、전리층반사고도완전일치，병분석료원인；최후재개소료단파천파련로장강예측방법적기출상분석료계통발사공솔、천선、본지조성등각충영향인소，득출불동조건하단파통신빈솔호역성적결론。
Aiming at the frequency unidirectional problem in HF communication,some factors affecting the reciprocity of ionosphere are firstly analyzed, then the bidirectional HF link in different distances and direc-tions is simulated via the ITS software. Simulation results indicate that the propagation mode, elevation and ionosphere reflecting height of the same communication frequency in bidirectional HF link are completely consistent , and the reasons are also analyzed. Finally, based on the introduction of prediction method for HF sky-wave field strength, this paper discusses some influence factors such as system transmitting power, an-tenna and local noise, thus proposes a conclusion on HF frequency reciprocity in different conditions.