radar operator
21Automatic Radar Plotting Aid — A maritime radar with Automatic Radar Plotting Aid (ARPA) capability can create tracks using radar contacts. The system can calculate the tracked object s course, speed and closest point of approach (CPA), thereby knowing if there is a danger of… …
22Würzburg radar — Infobox Radar name = Giant Würzburg radar country = Germany introdate = 1941 number = around 1500 range = up to 70 km (44 mi) diameter = 7.5 m (24 ft 7 in) azimuth = 0 360º elevation = 0 90º precision = ±15 m (49 ft 2½ in)The Würzburg… …
23Sliding door operator — A sliding door operator (or sliding door opener or automatic sliding door operator) is a device that operates a sliding door for pedestrian use. It opens the door automatically, waits, then closes it. Uses Sliding door operators are typically… …
24Opana Radar Site — U.S. National Register of Historic Places U.S. National Historic Landmark …
25Swing door operator — A swing door operator (or swing door opener or automatic swing door operator) is a device that operates a swing door for pedestrian use. It opens or helps open the door automatically, waits, then closes it. Types There are 3 basic types of swing… …
26Monopulse radar — is an adaptation of conical scanning radar which sends additional information in the radar signal in order to avoid problems caused by rapid changes in signal strength. The system also makes jamming more difficult. Most radars designed since the… …
27Perimeter Surveillance Radar — (PSR) is a class of radar sensors that monitor activity surrounding or on critical infrastructure areas such as airports, seaports, military installations, national borders, refineries and other critical industry and the like. Such radars are… …
28P-30 radar — Country of origin  Soviet Union Introduced 1955 Number built E band/F ba …
29H2X radar — The H2X radar, nicknamed the Mickey set , provided the USAAF with ground mapping capability (for navigation) during daylight overcast and nighttime operations in World War II.The H2X system replaced the British H2S radar. It used a shorter 3 cm… …
30P-20 radar — Country of origin  Soviet Union Introduced 1949 Number built E band/F ba …
