radar beam
31beam — i. A processed and directed pulse of energy. ii. An invisible path produced by radio signals. An aircraft can follow the beam when approaching or going away from a navigational fix. A radar detects an aircraft when it is illuminated by its beam.… …
32radar speed camera — noun a camera equipped with an ultra high frequency microwave beam transmitted at an angle to the traffic flow; when reflected off a moving object, as a vehicle, its frequency is changed, allowing the speed of the vehicle to be calculated and its …
33Weather radar — in Norman, Oklahoma with rainshaft …
34Synthetic aperture radar — (SAR) is a form of radar in which the highly directional (and thus very large) rotating antenna used by conventional radar is replaced with many low directivity small stationary antenna positions scattered over some area near or around the target …
35pencil beam — noun : a sharp focus radar beam nearly round in its axis used to pick up an intruder located by a search radar beam and give it better definition on the radar screen * * * a cone shaped radar beam. [1945 50] * * * pencil beam, a narrow, conical… …
36fan beam — A fan shaped radar beam, broad in the vertical plane and narrow in the horizontal plane. A fan beam allows only the measurement of the azimuth angle. Typically, a fan beam in aircraft surveillance radar is 1° to 2° in azimuth and 20° to 40°, or… …
37guidage par faisceau radar — radarinis nutaikymas statusas T sritis radioelektronika atitikmenys: angl. radar beam riding; radar guidance vok. Radarleitstrahlsystem, n; Radarlenkung, f rus. наведение по лучу радиолокационной станции, n; радиолокационное наведение, n pranc.… …
38guidage radar — radarinis nutaikymas statusas T sritis radioelektronika atitikmenys: angl. radar beam riding; radar guidance vok. Radarleitstrahlsystem, n; Radarlenkung, f rus. наведение по лучу радиолокационной станции, n; радиолокационное наведение, n pranc.… …
39scanning radar — scanning radar, a radar with a large, stationary antenna which points the radar beam in different vertical directions by shifting the frequency of the radar waves …
40fanning beam — A radiant energy beam, such as a radar beam, which sweeps back and forth over a limited arc …
