Title :
Range autofocus for linearly frequency-modulated continuous wave radar
Author :
Middleton, R.J.C. ; Macfarlane, D.G. ; Robertson, D.A.
Author_Institution :
Sch. of Phys. & Astron., Univ. of St. Andrews, St. Andrews, UK
fDate :
3/1/2011 12:00:00 AM
Abstract :
A software-based method for estimating and compensating for chirp non-linearity in frequency-modulated continuous wave radars is described. The method is based on the phase-gradient algorithm and time-domain warping of the dechirped signal. The method is demonstrated both on typically and severely non-linear chirps. The retrospective application is demonstrated on archive radar data.
Keywords :
CW radar; FM radar; electrical engineering computing; gradient methods; radar signal processing; time-domain analysis; chirp nonlinearity; linearly frequency-modulated continuous wave radar; phase-gradient algorithm; range autofocus; software-based method; time-domain warping;
Journal_Title :
Radar, Sonar & Navigation, IET
DOI :
10.1049/iet-rsn.2010.0097
