The book addresses key attributes of radar for in-door human monitoring: motion classification including fall, detection of vital signs, and categorization of human gait for risk assessment. It includes examples using data from healthy individuals and patients using Doppler and range-Doppler radars of single and multi-antenna system configurations. "The topic of monitoring of humans in an indoor environment has universal appeal and applicability throughout the world. Thus, there is a need for such a book to educate professionals throughout the world in designing optimum radar systems for monitoring their movements, detecting falls, monitoring their vital signs, as well as their gait and other characteristics associated with their movements. There is no competing book in the market at this time, so this will be the first to address this very important and timely topic."-Ram M. Narayanan, Pennsylvania State University, USA