CHAPTER 5
Surface-Wave Radar
Whereas skywave over-the-horizon (OTH) radar represents the only ground-based sensor capable of target detection and tracking at ranges of thousands of kilometers (without the aid of a satellite), two-way surface-wave propagation in the HF band represents an alternative mode that may be exploited to provide wide-area surveillance over shorter but nevertheless OTH distances in the order of perhaps hundreds of kilometers. This classification of OTH radar is often referred to as high-frequency surface-wave (HFSW) radar or groundwave radar. HFSW radar systems use vertically polarized signals and typically operate in the ...
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