波在暖電離層中的傳播和耦合
THE WAVE PROPAGATION AND THE MODE COUPLING IN THE WARM IONOSPHERE
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摘要: 本文研究了波在暖電離層中的傳播。文中導(dǎo)出了用拆射率n表示的波的色散關(guān)系,并由此推導(dǎo)出分層暖電離層中q的方程。所有這些方程都被用于用射線方法研究波在暖電離層中的傳播,模式聯(lián)接和波的線性耦合。 本文還討論了波方程的奇點、等離子體波與電磁波的耦合。在波耦合區(qū)中,波的場可以通過求解波方程在奇點附近的解而求得。文中比較了用射線方法和全波方程研究波耦合時電波傳播的結(jié)果。 本文所得結(jié)果對研究用無線電波加熱電離層實驗中的吸收區(qū)域是有用的。
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關(guān)鍵詞:
Abstract: The wave propagation in the warm ionosphere is studied in this paper. The dispersion relation of refractive index (n) of the waves is derived and the equation of q in the warm stratified ionosphere is inferred. All these equations have been used in studying of wave propagation, wave mode linking and linear mode coupling of the waves in the warm ionosphere by ray traeing method.The singular point of the wave equation and the coupling between the plasma waves and the electromagnetic waves are discussed. The wave field in coupling region can be got by solving the wave equation in the region near the singular point. The method of ray tracing and the method of wave equation were compared. The results of this paper could be useful in studying the absorption region of the ionosphere in the ionosphic heating experiment. -
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