差分GPS在飞行试验中的应用

Application of Differential GPS in Flight Test

ＧＰＳ（ＧｌｏｂａｌＰｏｓｉｔｉｏｎｉｎｇＳｙｓｔｅｍ）是美国正在大力发展的高精度卫星导航系统。主要叙述差分ＧＰＳ（ＤＧＰＳ）在飞行试验中的应用。首先介绍ＧＰＳ的伪距测量定位原理和测速原理，ＤＧＰＳ提高定位精度的原理。叙述了在飞行试验中利用ＤＧＰＳ进行测量的实施方法和试验结果，以及对试验结果的具体应用（如检验飞行航线、校验跟踪雷达和惯测装置等）。最后分析了ＧＰＳ在我国各个领域（大地测量，地球科学，航空、航天工程测量，导弹制导等）的广泛应用前景，以便今后能充分利用这种廉价资源。

GPS (Global Positioning System) is a high precision satellite navigation system of U. S. Which is energetically developing along with many conspicuous virtues and its expansive applications. Closing on perfecting and developing of GPS more.and more attention is being paid to GPS in the world many nations. This paper discusses the application of differential GPS (DGPS) in flight test. The theory of the conduct of GPS and of improving location accuracy for DGPS technique is presented. The results in a certain flight test is given. Finally, the great prospect of GPS extensive application is briefly presented.