High precision GPS.simple gps tracking supplier

　　High precision GPS measurement must use carrier phase observation values. RTK positioning technology is a real-time dynamic positioning technology based on carrier phase observation values, which can provide real-time three-dimensional positioning results of the measuring station in the specified coordinate system and achieve centimeter level accuracy. In RTK operation mode, the reference station transmits its observation values and station coordinate information together to the mobile station through a data link. The mobile station not only receives data from the reference station through data links, but also collects GPS observation data and forms differential observation values within the system for real-time processing. At the same time, it provides centimeter level positioning results, which takes less than one second. The mobile station can be in a stationary or moving state; It can be initialized at a fixed point before entering dynamic operations, or it can be directly turned on under dynamic conditions, and the entire cycle ambiguity can be searched and solved in a dynamic environment. After the unknown number is fixed throughout the entire week, real-time processing of each epoch can be carried out. As long as the tracking of more than four satellite phase observations and necessary geometric shapes can be maintained, the mobile station can provide centimeter level positioning results at any time.

　　RTKLIB is an open source package developed by Tokyo University of Marine Science and Technology, Japan, for the application of standard and accurate GNSS global navigation satellite system. RTKLIB includes a portable program library and several application program (AP) libraries.

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