Title :
Improving the range/time sidelobes of large bandwidth discontinuous spectra HF radar waveforms
Author :
Green, S.D. ; Kingsley, S.P.
Author_Institution :
Sheffield Univ., UK
Abstract :
Due to heavy user congestion, many over-the-horizon (OTH) HF radars are restricted to operating within narrow frequency bands. As a result the achievable range resolution with such radars is poor. In order to operate a wideband HF radar, the signal spectrum must be made discontinuous, which gives rise to high range sidelobes and thus a low signal dynamic range. We introduce a new signal processing technique to lower the range sidelobes associated with discontinuous spectra signals. Results are presented for a repeated linear FM test case and show significant range sidelobe reduction using the new algorithm
Keywords :
radar signal processing; HF radar waveforms; OTH radar; algorithm; discontinuous spectra signals; high range sidelobes; large bandwidth discontinuous spectra; linear FM test case; low signal dynamic range; over the horizon HF radar; range resolution; range sidelobe reduction; range/time sidelobes; signal processing; signal spectrum; user congestion; wideband HF radar;
Conference_Titel :
HF Radio Systems and Techniques, Seventh International Conference on (Conf. Publ. No. 441)
Conference_Location :
Nottingham
Print_ISBN :
0-85296-688-1
DOI :
10.1049/cp:19970798