Local Information from Range-Speed Radar Sequences

Radar observes targets, but they remain difficult to interpret due to the difficulty in analysing the radar range-speed sequences. The need for accurate analyses tools increases in case of extended target behaviour or multiple channel radars which give additional observation angles. Extended targets are targets with multiple scatterer responses which disturb each other and give a blurred target response. We investigate here the approach of deconvoluting the range-speed response with a point spread function and interpolate the range-speed positions to get the inner structure of the extended target. The deconvolution gives the individual elements of the extended target. The range-speed interpolation gives accurate position information. The positions and additional observation angle information are tracked with a filter. We demonstrate the approach with real radar measurements.