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In daily surveying, we usually set up base stations on known points. What if there are no known points or the known points are far apart in some large-scale projects? How can we ensure the accuracy when shift or re-start the base station?

For sophisticated surveyors, you may have experienced a time when RTK equipment suddenly became difficult to fix, even with perfect equipment in an open sky view. After that everything went back to normal. This is most likely caused by a solar storm.

In order to obtain higher accuracy of GNSS, we usually use DGPS (Differential Global Positioning System) to help improve accuracy. Both using the differential data to correct GNSS positioning, what’s the main difference between RTK (Real Time Kinematic) and RTD (Real Time Differential)? And what are the differences in their application fields? Let's discuss it in today's blog.

To obtain higher efficiency, nowadays more and more large-scale projects combine total station and GNSS receivers to complete complex survey tasks. But in this case, the most troublesome thing is the subsequent processing of point data in different coordinate systems. If data problems are found after processing, users may even need to do some re-measurement.

With the development of the surveying industry, the mainstream surveying instruments on the market mainly include two types, one is the representative of traditional optical surveying - total station, and the other is the representative of emerging satellite-based surveying - GNSS RTK receiver.

As one of our hot products, the Y1 GNSS receiver has a very wide user base, and they also encountered various technical questions in the process of using Y1. We have summarized the questions frequently asked by our users and provided some solutions, hoping to solve some of your confusion.