This book presents the state-of-the-art in advanced radar, with emphasis on ongoing novel research and development and contributions from an international team of leading radar experts. Each section gives an overview of the latest research and perspectives of the future, and includes a number of chapters dedicated to specific techniques in conjunction with existing operational, experimental or conceptual applications. Volume 2 covers: *Passive and multistatic radar, including bistatic clutter modeling; passive radar with airborne receivers; short-range passive radar potentialities; multi-illuminator and multistatic passive radar; through the wall imaging radar; forward scatter radar; GNSS-based passive radar; and passive MIMO radar networks *Waveform diversity and cognitive radar, including cognitive radar management; spectrum engineering; bio-inspired radar techniques; waveform design for spectral coexistence; concept of the intelligent radar network; clutter diversity; adaptive OFDM waveform design for spatio-temporal-sparsity exploited STAP radar; and pplications of noise radar *Target tracking and data fusion, including multistatic tracking for passive radar applications; multiplatform radar surveillance for aerial and maritime surveillance; a review of posterior Cramer-Rao bound for target tracking; person tracking and data fusion for UWB radar applications; joint multi-target track-before-detect using particle filtering; radar-based ground surveillance; tracking and fusion in log-spherical state space with application to collision avoidance and kinematic ranging; and sensor management for radar networks