Abstract
Unmanned Aerial Vehicles (UAVs) are used in different tasks with different flight path accuracy. To achieve a greater accuracy of flight trajectory GPS accuracy improvement methods are analyzed. The present article explains the main principles of GPS measurement. Precise Point Positioning (PPP) and Real-Time Kinematics (RTK) methods are described. and compared. Also, both methods have been tested.
Highlights
Unmanned aerial vehicles (UAV) can accomplish a lot of different tasks
An autonomous GPS can give us around 15 m errors, real-time differential stations – about 1–5 m errors, post-processed code differential – 0.5–5 m, and realtime kinematics or precise point positioning – about
Real Time Kinematic (RTK) is a technique used for atmospheric errors, satellite orbit error or satellite clock offset error corrections
Summary
Unmanned aerial vehicles (UAV) can accomplish a lot of different tasks. To achieve the best accuracy UAVs use Global Navigation Systems (GNSS). GNSS using the GPS (the Global Positioning System), GLONASS, Galileo or Beidou systems are used in many applications. In this case only the GPS will be used. Positioning and navigation are the main applications of GPS usage (Xu 2007)algorithms and applications of the Global Positioning System The algorithm to find out a location is used to measure the ranges between receivers and satellites. GPS satellites are broadcasting it onto a position, so the receiver can receive it and calculate the distance.
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