Ming-Quan Hong, Wen Zhao, Guang Chen, Chaoxian Chen, Ziliang Wang
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Quality Check and Analysis of BeiDou and GPS Observation Data in the Experiment of Air-Gun in Reservoir
The next few years promises drastic improvements to global navigation satellite systems. USA is modernizing GPS, Russia is GLONASS, Europe is moving ahead with its own Galileo System, and China is expanding its BeiDou system from a regional navigation system to a full constellation global navigation satellite system known as BeiDou-2/Compass. Chinese BeiDou satellite navigation system constellation currently consists of twenty-six BeiDou satellites and can provide services of navigation and positioning in the Asia-Pacific Region. In this paper, we calculate the high frequency data of GPS and BeiDou by using the broadcast ephemeris, and the results are applied to the real-time positioning of the float platform in the experiment of Air-Gun in reservoir. We use the data to analyze the quality by multipath effect, signal noise ratio, positioning accuracy and so on. The results show that the accuracy of the BeiDou is slightly lower than that of GPS. The accuracy of GPS in horizontal direction is about 5 mm and that of vertical direction is about 12 mm, and the accuracy of BeiDou in horizontal direction is about 5.5 mm and that of vertical direction is about 16 mm.
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