GPS technology in the construction of the airport

Abstract: Global Positioning System (GPS) is a high-tech space, the space of space, to the positioning of space technology. Principle of GPS positioning technology through a brief analysis to summarize the technical characteristics, is proposed for the airport road construction technology and techniques designed to improve the technical content of airport projects, construction projects for the airport to serve well.

Key words: GPS Technology Application airport construction

Global Positioning System GPS (Navigation Timing and Ranging / Global Positioning System), is the U.S. Department of Defense at the end of 1993 completed the "Timing and Ranging Navigation / Global Positioning System" for short. Is a time and distance can be granted intersection point of the dual-use space for satellite navigation and positioning system, not only to provide continuous, real-time, high-precision three-dimensional position, velocity and time information and other technical parameters, but also has good anti-jamming and confidentiality.

A, GPS Global Positioning Technology Overview

1, GPS system, the composition of the

Mainly by the GPS space segment, ground control segment and user equipment components.

1.1 The GPS space segment of the space in part by the evenly distributed in the six angle relative to the equatorial plane for the 550 quasi-circular orbit around the earth the work of running the 21 satellites and three spare satellites, the angle between the orbital plane of 600, each one has four satellites in orbit, the satellite, the average height of 20200km. The work of each satellite GPS satellites to L1 = 1575.42 MHz and L2 = 1227.6 MHz transmit two frequency navigation signals, navigation signal using pseudo-random noise code modulation, L1 P code and use the C / A code modulation; L2 P code modulation used. Where C / A code and opening up of civil, average run cycle 11h58min, to ensure that anywhere in the world can at any time while receiving fou