When does static relocation occur?

Static relocation usually occurs in the situations of "initial measurement", "network correction" and "regular monitoring": 1. When you need to determine the exact position of a point, you can perform static relocation; 2. You need to use When differential correction technology improves positioning accuracy, static relocation will also occur; 3. Specific positions need to be monitored regularly to understand their position changes or conduct deformation analysis.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

Static relocation refers to long-term observation and data processing in GPS measurements to obtain high-precision positioning results.

It usually occurs under the following circumstances:

1. Initial measurement:

   Static relocation can be performed when the exact location of a point needs to be determined . For example, in fields such as surveying and mapping, land surveying, and construction engineering, it is necessary to obtain high-precision datum points or control points.

2. Network correction:

   Static relocation also occurs when differential correction technology needs to be used to improve positioning accuracy. Differential correction eliminates some errors by performing differential calculations with the observation data of the reference station, thereby improving positioning accuracy.

3. Regular monitoring:

   Some applications require regular monitoring of specific locations to understand their position changes or perform deformation analysis. In this case, static relocation can be used to obtain continuous high-precision positioning results.

In these cases, the GPS receiver continues to observe satellite signals and records raw observation data. Usually, in order to obtain higher accuracy, continuous observation is required for tens of minutes to hours or even longer. After completing the data collection, data processing and differential calculation are still required to obtain the final positioning result.

It should be noted that the specific moment of static relocation depends on the actual application requirements and measurement plan. Before static relocation, careful planning and preparation are required, including selecting the observation location, determining the sampling interval and duration, etc.

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