Open AccessAmbiguity analysis of HD FM waveforms for use in passive radar
Author(s) -
Smith G.E.,
Garry J.L.,
Ewing R.L.,
Baker C.J.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.1582
Subject(s) - ambiguity , radar , passive radar , waveform , ambiguity function , frequency modulation , modulation (music) , computer science , electronic engineering , continuous wave radar , telecommunications , engineering , radar imaging , acoustics , bandwidth (computing) , physics , programming language
Analogue VHF waveforms have been used extensively as signals of opportunity in passive radar concepts. They have time‐varying ambiguity properties determined by the instantaneous nature of the broadcast content and correspondingly this results in a time‐varying radar performance. In this reported work, the ambiguity properties of high definition (HD) FM signals are examined. It is shown that the digital modulation imposed on these transmissions results in more stable ambiguity properties better suited to reliable and consistent passive radar performance.