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N a radio wave reflected back to the earth by the ionosphere (ionospheric wave), permitting transmission around the curved surface of the earth 天波 → compare ground wave
The stability and space correlation about the sky-wave propagation time-delay in Loran-C system are studied.
研究了罗兰-C天波传播时延的稳定性与空间相关性。
The operational principles and the development tendencies of sky-wave, ground-wave, and microwave OTH radars are also presented.
主要论述了天波、地波、微波超视距雷达的工作机理及其发展趋势。
Ionospheric frequency modulation causes spreading of the surface clutter in Doppler domain which greatly limits the detection performance of HF sky-wave radars.
电离层频率调制导致地表面杂波的多谱勒展宽，极大地限制了高频天波雷达的目标探测性能。
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