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The Galileo system is the first satellite positioning and navigation system specifically designed for civil purposes. This system can not only provide global position service with high accuracy and high assurance, but also be compatible with GPS which guarantees us with great practicability and commercial benefit. This paper is focused on the study of Galileo system. First, it introduces the form...
Detection and correction of cycle slip is one of key problems of GPS carrier phase measurement in the GPS data processing. In this paper, it takes the carrier phase observation data of L1 as the research object on the platform of MATLAB making an advanced study for detection and correction of cycle slip. It brought forward a combinational algorithm that takes the high order time difference to detect...
GPS positioning and timing are more and more essential to our daily life and they are widely used in our daily life, such as radio and television, land, sea and air navigation, engineering surveying, geodesy and so on. This paper mainly achieved the simulation of GPS software receiver's positioning and timing function. Through NovAtel's Superstar-II receiver, the data was collected and then decoded...
The paper decoded the positioning data, received with GPS & GLONASS receiver of 24 channels (GG24 receiver), to get the orbit parameters of GLONASS satellites at first, and then took these data as initial value for the 4-order Runge-Kutta to orbit extrapolation and compared the extrapolation position with the position in broadcast ephemeris of GLONASS. The experiment indicates that the average...
The paper completed all the correction of constellation error and receiver channel error. It was brought forward a comprehensive scheme for position error correction. The experiment platform was based on Superstar II GPS receiver and Matlab. It mainly corrected the position error such as satellite clock error, ionospheric error, tropospheric error, the earth rotation effect etc. Moreover, ionospheric...
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