How does the High Precision GNSS RTK Development Board use differential technology to improve positioning reliability in complex environments?
Publish Time: 2025-01-27
In complex and ever-changing natural and urban environments, the High Precision GNSS RTK Development Board provides reliable location information for many fields with its excellent positioning capabilities. Especially when facing complex terrains such as urban canyons, forests, and mountains, the RTK development board significantly improves the accuracy and reliability of positioning through differential technology.
Differential technology is the core of high-precision GNSS positioning. It uses the difference in observation data between a base station with a known position and a mobile station to eliminate or weaken the impact of various error sources. These error sources include atmospheric delay (ionospheric and tropospheric delay), satellite orbit error, receiver clock error, etc. In complex environments, these errors often become key factors affecting positioning accuracy.
The RTK development board receives satellite signals observed simultaneously by the base station and the mobile station, and calculates the differential correction value between the two. This correction value can reflect the actual situation of various errors in the current environment in real time and be transmitted to the mobile station to correct its positioning result. This differential processing not only significantly improves the accuracy of positioning, but also enhances the robustness of positioning, maintaining high positioning reliability even when the signal is interfered or blocked.
In complex environments, the RTK development board also uses a variety of strategies to optimize the effect of differential technology. For example, multi-frequency observation data is used to reduce the impact of multipath effects. This is because at different frequencies, the signal is affected differently by atmospheric delay and multipath effects. By combining these observation data, these errors can be eliminated more effectively. . In addition, precise antenna design and clock calibration also play a key role in data processing, further improving positioning accuracy and reliability.
In order to cope with the challenges in complex environments, the RTK development board also adopts advanced algorithms and data processing technologies. For example, filtering-based algorithms (such as Kalman filtering and particle filtering) are widely used in real-time positioning. These algorithms can dynamically model and predict the observed data to improve the robustness and speed of positioning.
In summary, the high precision GNSS RTK development board significantly improves the positioning accuracy and reliability in complex environments through differential technology, combined with multi-frequency observation, precise antenna design and advanced data processing algorithms.
