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Jia Yang, Xiaopeng Li, Lei Luo, Lewen Zhao, Juan Wei and Teng Ma
Recently, multirotor UAVs have been widely used in high-precision terrain mapping, cadastral surveys and other fields due to their low cost, flexibility, and high efficiency. Indirect georeferencing of ground control points (GCPs) is often required to ob...
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Lewen Zhao, Jan Dou?a and Pavel Václavovic
The Precise Point Positioning (PPP) with fast integer ambiguity resolution (PPP-RTK) is feasible only if the solution is augmented with precise ionospheric parameters. The vertical ionospheric delays together with the receiver hardware biases, are estima...
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Chunbao Xiong, Lina Yu and Lewen Zhao
The improvement of precise point positioning (PPP) accuracy can provide more wide application of high-accuracy PPP products on weather forecasts, structural healthy monitoring, etc.
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