Last year I did was working on a uni paper looking at developing a generic software-defined radar transmitter using GNU Radio as part of a university submission. The gnu radio list was instrumental to me learning about Software Defined Radio, getting my USRP N210 up and running and helping me interpret my subsequent testing. Hopefully I was reasonably on the ball! So for any interested in my results here is the link! I'd be happy to get any feedback,
http://digital.library.adelaide.edu.au/dspace/handle/2440/77826
Cheers
-Michael