target bearing transmitter
1Torpedo Data Computer — The Torpedo Data Computer (TDC) was an early electromechanical analog computer used for torpedo fire control on American submarines during World War II (see Figure 1). Britain, Germany, and Japan also developed automated torpedo fire control… …
2Run Silent, Run Deep — Infobox Film name= Run Silent, Run Deep caption= imdb id= 0052151 amg id= 1:42321 producer= Harold HechtWilliam Schorr (assoc) director= Robert Wise writer= Edward L. Beach, Jr. (story) John Gay (screenplay) starring= Clark GableBurt Lancaster… …
3Brevity code — Contents 1 American/NATO codes 1.1 A 1.2 B 1.3 C …
4Parchim class corvette — The Parchim class corvette was developed for the East German Navy in the late 1970s, and built by the Wolgast Peene Werft.The Warsaw Pact designation was Project 133 . The ships were designed for coastal anti submarine warfare. In case of an all… …
5Passive radar — systems (also referred to as passive coherent location and passive covert radar) encompass a class of radar systems that detect and track objects by processing reflections from non cooperative sources of illumination in the environment, such as… …
6Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …
7History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …
8Signals intelligence — SIGINT redirects here. For the UNIX signal, see SIGINT (POSIX). RAF Menwith Hill, a large site in the United Kingdom, part of ECHELON and the UK USA Security Agreement. Signals intelligence (often contracted to SIGINT) is intelligence gathering… …
9Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) …
10Underwater searches — are procedures carried out by divers in order to find a known or suspected target object or objects in a specified search area under water. There are a number of techniques in general use by Commercial, Scientific, Public service, Military, and… …
