accurate position and velocity information, and precise    統(tǒng)不受天氣的影響，并提供世界通用性座標系統(tǒng)。全球定

time, on a continuous global basis, to an unlimited        位系統(tǒng)概念以系統(tǒng)中每個衛(wèi)星具備相對于發(fā)射衛(wèi)星與用

number of properly equipped users. The system is           戶之間的時間和距離的準確且連續(xù)的空間位置信息之原

unaffected by weather, and provides a worldwide            則為基礎(chǔ)。全球定位系統(tǒng)自動從所見衛(wèi)星選擇合適信號，

common grid reference system. The GPS concept is           并將這些信號轉(zhuǎn)譯成三維空間位置、速率、和時間。

predicated upon accurate and continuous knowledge of

the spatial position of each satellite in the system with

respect to time and distance from a transmitting satellite

to the user. The GPS receiver automatically selects

appropriate signals from the satellite in view and

translates these into a three-dimensional position,

velocity, and time.

GLOBAL POSITIONING SYSTEM (GPS) (No. 2), A                 全球定位系統(tǒng)（GPS）（NO． ），

                                                                                         2

longrange navigation system that takes navigation input      一種使用一系列同步衛(wèi)星所發(fā)射的信號作為導航輸人

from transmissions generated by a series of satellites in  的長距離導航系統(tǒng)。

synchronous orbit.

GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS),                全球?qū)Ш叫l(wèi)星系統(tǒng)（GNSS），

An "umbrella" term adopted by the International Civil        是國際民航組織采用的“傘形” 術(shù)語。它包括飛行員

Aviation Organization (ICAO) to encompass any              在飛行中根據(jù)衛(wèi)星資料做位置判斷而使用的任何獨立衛(wèi)

independent satellite navigation system used by a pilot    星導航系統(tǒng)。

to perform onboard position determinations from the

satellite data.

O-AROUND (GA), Airplane maneuver where the pilot is        復(fù)飛（GA），

in the final approach phase of flight and decides not to     飛行員在最后進近階段，決定不落地而做的機動動作。

land. Thrust is applied and the landing gear retracted so  復(fù)飛時需加油門，收起落架，以使飛機爬升至安全高度。

as to climb the airplane to a safe altitude.

GO-AROUND THRUST, Maximum engine thrust to be              復(fù)飛推力，

used during the Go-Around Maneuver.                             飛機復(fù)飛期間使用的最大發(fā)動機推力。