Eyes through the Ether: Ground-Based Air Surveillance Radar Survey

摘要

During the Second World War, the nascent science of radar was chiefly concerned with the fixed-wing aircraft threat. Over 60 years later, today's air surveillance radars have to keep watch not only for planes but for helicopters, UAVs, cruise missiles, and precision-guided munitions. These radars have to be sufficiently robust and provide a Low Probabilty of Intercept (LPI) to frustrate Signals Intelligence (SIGINT) collection, and Anti-Radiation Missiles (ARMs).