“While all radio services are important to the nation, one of the very important uses of spectrum is for radars. Radars, by means of the propagation properties of radio waves, can determine an object’s position, velocity and/or other characteristics. Radars come in a variety of sizes and power, from ultra- wideband milliwatt systems to very high-power systems used primarily for long-range search and surveillance. This report limits its investigation to mainly radars used for military radiolocation, radionavigation, meteorological, and Earth observations.”