CAJ | 학술논문

针对低频地波衰减因子预测算法中积分方程算法与其它经典算法在均匀/分段均匀光滑路径模型下求解结果不一致的问题进行研究分析。引入球面校正因子和高程转换技术，对积分方程方法进行改进，提高其与其它经典算法在光滑路径模型下预测结果的一致性。在此基础上，将改进算法用于实际不规则地面模型地波衰减因子预测，并与实测结果进行比较。与原算法相比，改进后的算法更适合考虑地球曲率影响下复杂长距离地面及空中地波衰减因子的求解。
침대저빈지파쇠감인자예측산법중적분방정산법여기타경전산법재균균/분단균균광활로경모형하구해결과불일치적문제진행연구분석。인입구면교정인자화고정전환기술，대적분방정방법진행개진，제고기여기타경전산법재광활로경모형하예측결과적일치성。재차기출상，장개진산법용우실제불규칙지면모형지파쇠감인자예측，병여실측결과진행비교。여원산법상비，개진후적산법경괄합고필지구곡솔영향하복잡장거리지면급공중지파쇠감인자적구해。
The results of the integral equation method on the low-frequency ground-wave attenuation factor are inconsistent with other classic algorithms for the homogeneous/inhomogeneous smooth-path models. To solve this problem, a spherical correction factor and an elevation converting technique are introduced to the integral equation method. With these efforts, the results of the improved method are more consistent with other algorithms under the smooth-path conditions. Then, it is used for a real irregular-path model, and the calculated results are compared with the measured ones. It is shown that the proposed method is more suitable for the occasions both on the ground and in the air as the propagation path is long, irregular, and curved.