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What is dual micro RTK? What does dual micro RTK do?
What is dual micro RTK and cloud dual micro RTK? What is a fixed base station and a mobile base station? What is a mapper? What is a mushroom head? Dual micro RTK (real-time kinematic) is the full name of real-time dynamic carrier phase differential positioning technology, which is a measurement and positioning method to obtain centimeter level positioning accuracy in real time in the field. Our usual partners say that the withdrawal of UAV from dual micro RTK is actually the withdrawal of UAV from the "real-time dynamic differential positioning state".
The dual micro RTK is realized based on the positioning technology of the global satellite navigation system (GNSS). The application of this technology includes three links: what is the dual micro RTK? Dual micro RTK (real-time kinematic) positioning technology is a real-time dynamic positioning technology based on carrier phase observation, which can provide the three-dimensional positioning results of the observation station under the specified coordinate system in real time and achieve centimeter accuracy. What is the dual micro RTK used for? Dual micro RTK (real-time kinematic) positioning technology is a real-time dynamic positioning technology based on carrier phase observation, which can provide the three-dimensional positioning results of the observation station under the specified coordinate system in real time and achieve centimeter accuracy. The distance between the base station and point a is relatively close, so when they receive the satellite signal, they are basically close to the atmosphere. The base station itself knows the position of the coordinates, obtains the difference between the new coordinates provided by the satellite signal and the original data, and informs point a of the difference result. In this way, point a can also obtain high-precision results.
Since dual micro RTK was introduced into the field of UAV, dual micro RTK technology has been widely used in UAV in recent years. In the field of agricultural plant protection, it has been known that it can improve the positioning accuracy of UAVs and reduce flight errors. Due to the multipath effect of the satellite signal and the refraction and reflection of the satellite signal in the atmosphere, when there are windbreaks around the farmland or the weather environment, the positioning accuracy of the satellite will be reduced, resulting in the flight path deviation of the UAV during operation. There is a certain risk of route deviation. When using ordinary GPS positioning, the route deviation may even reach about 10m. If the deviation is too large, it may cause the plant protection UAV to hit the windbreak or other accidents. Therefore, such autonomous flight can not make people feel at ease, nor can it free the hands of operators. They still need to focus on the whole operation process and be ready for rescue at any time. The probability that the circular probability error (CEP) of ordinary GPS is within 2.5 meters is 50%, and the other 50% probability will be greater, even close to 10 meters. In the above figure, when we want to find the position of point O, ordinary GPS tells us that point O is at point a, which is any point within 10 meters of the yellow circle. RTK uses real-time differential technology to reduce the measurement range to less than 10cm.