CAJ | 학술논문

“极区电急流天线”辐射依赖于低电离层D/E区背景电急流，而高电离层F区极低频调制加热，可产生抗磁性电流，形成极低频波辐射源。利用电离层F区一维时变加热数值模型，采用全波解算法研究高纬Troms?（69．59°N，19．23°E）地区电离层F区极低频调制加热。模拟结果表明，极区高电离层激发的极低频波与极区低电离层激发的结果不同。加热泵波的有效辐射功率（ effective radiated power ，ERP）、调制频率及电离层背景对极低频波强度有着重要影响。
“겁구전급류천선”복사의뢰우저전리층D/E구배경전급류，이고전리층F구겁저빈조제가열，가산생항자성전류，형성겁저빈파복사원。이용전리층F구일유시변가열수치모형，채용전파해산법연구고위Troms?（69．59°N，19．23°E）지구전리층F구겁저빈조제가열。모의결과표명，겁구고전리층격발적겁저빈파여겁구저전리층격발적결과불동。가열빙파적유효복사공솔（ effective radiated power ，ERP）、조제빈솔급전리층배경대겁저빈파강도유착중요영향。
Polar ionospheric heaters operated by HARRP and EISCAT have generated extremely low frequency waves by modulating the auroral electrojet at D and E region altitudes .However , the auroral electrojet often varies over time and is not always present .Alternatively, modulated F-region HF heating can generate ionospheric diamagnetic cur-rent, and the periodic modulation results in a magnetic moment that radiates extremely low frequency waves .Based on a one-dimensional time physical model of polar ionospheric heating and a full-wave model , we analyzed the fea-tures of extremely low frequency waves over Troms?(69.59°N, 19.23°E).The results showed that extremely low frequency waves on the ground are different from lower ionospheric modulation , i.e., radiation of polar electrojet antenna.Furthermore, effective radiated power (ERP), modulated frequency, and ionospheric background, have significant influence on the generated extremely low frequency wave .