This book gives you an in-depth look into the critical function of interference shielding for onboard radar of anti-aircraft missile systems. Three problematic interferences are presented and discussed in detail: polarization interference; interference to the sidelobe of onboard antenna; and interference from two points in space, including interference reflected from the earth (water) surface. You will learn the basic principles of radiolocation, including monopulse radars, and get insight into the fundamental functional units of anti-aircraft missiles and surface-to-air missile systems. The book presents guidance methods, systems of direction finding, problems on firing over the horizon, and questions of accuracy and resolution - all important for better addressing solutions of interference shielding. This is a unique and valuable resource for engineers and technicians who are involved in the design and development of anti-aircraft guided missile systems, with special emphasis on interference immunity and protection. It can also be used as a textbook in advanced radar technology coursework and seminars.