This is NOT a book to teach you how to choose or use your radar for your weekend fishing boat. It IS the book to refer to when you are designing a radar system, or part of a system. It's very mathmatical, because this is a mathmatical subject. It is also VERY useful for microwave signalling engineers, i.e. Satellites, in terms of signal propagation, antenna design, etc. A Classic, if just a little dated now (hence 4 stars). Aimed at undergraduate level, my well-battered copy still sits on my bookshelf at work, and is referred to often.