Target Classification, Recognition and Identification with HF Radar

Radars operating in the HF band achieve extremely long range detection by exploiting propagation modes which preclude many of the standard target classification techniques, at least in their conventional form. Yet, in order to take full advantage of an over-the-horizon detection capability, reliable target classification, recognition and identification is essential. This paper explores the options for target classification at HF, reviews some of the results which have been achieved, mainly but not exclusively with reference to skywave radars, and assesses the prospects for operational target classification, recognition and identification.