The initial pages of this book contain a series of color pictures. The average page contains multiple pictures or tables, compressing the text to a minimum and rendering the book pleasant to read. The first flip through the pages will captivate the readers and compel them to regard the short text under an interesting image, even though this may happen somewhere in the middle of the book on a completely random page. The author is maintaining a companion website where various demonstration videos related to the book chapters can be found, watched, enjoyed, and, in some cases, mimicked to help build one's own radar. Similarly, several MATLAB scripts are provided by the author on his website so that interested readers can try the radar processing algorithms and demonstrations outlined in the book. Following an introductory chapter on the general subject of radars, the book is divided into two main parts: Part I contains six chapters on short-range radar systems, and Part II is devoted to applications. Police Doppler radar and motion sensors, automotive radar, and through-wall radar are the applications covered in Part II.