“beacon”的概念、定义、翻译、参考文献-科学参考

beacon

Space Exploration

A downlink from a spacecraft that immediately shows that the spacecraft is in one of several possible states. An on-board system assesses the craft's overall health. It then adds one of four tones to its download carrier to indicate how urgently it needs to contact the deep-space station (NASA ground tracking and communications station) with this data.

Electronics and Electrical Engineering

A signal station or the signal transmitted by such a station, which acts as a reference point. A beacon that transmits an identifiable signal is a code beacon. A homing beacon is one that guides an object, such as an aircraft, to a target, such as an airport. At the airport, signals from the localizer beacon associated with the instrument landing system are picked up enabling the aircraft to be guided to land. A beacon that employs radar signals is a radar beacon and one employing radiofrequency waves is a radio beacon. The receiver used for detecting the signals from a beacon is a beacon receiver.

单词	beacon
释义	beacon Space Exploration A downlink from a spacecraft that immediately shows that the spacecraft is in one of several possible states. An on-board system assesses the craft's overall health. It then adds one of four tones to its download carrier to indicate how urgently it needs to contact the deep-space station (NASA ground tracking and communications station) with this data. Electronics and Electrical Engineering A signal station or the signal transmitted by such a station, which acts as a reference point. A beacon that transmits an identifiable signal is a code beacon. A homing beacon is one that guides an object, such as an aircraft, to a target, such as an airport. At the airport, signals from the localizer beacon associated with the instrument landing system are picked up enabling the aircraft to be guided to land. A beacon that employs radar signals is a radar beacon and one employing radiofrequency waves is a radio beacon. The receiver used for detecting the signals from a beacon is a beacon receiver.
随便看	sterling area sterling M3 Stern, Curt Stern Gang Stern, Otto sternum Stern–Gerlach experiment steroid sterol Steropodon Stettin Stevenson, Adlai (Ewing) (1900–65) Stevenson, Charles Leslie (1908–79) Stevin, Simon Stevin, Simon (1548–1620) Steward Observatory Stewart Stewart, Dugald (1753–1828) Stewart, Ian (1945– ) Stewart, Robert Lee (1942– ) STG sthenic stibnite stickleback stick-slip