Abstract
Nowadays the RTK (Real Time Kinematic) method for positioning is used in daily life by different consumers for many purposes. Several different RTK correction techniques are used, starting from single site to network approaches. The GNSS market is filled with receivers from different manufacturers and different capabilities. In this paper we assess the stability of the reference station network transmitted RTK correction. Two different surveying class GNSS receivers in combination with four varied RTK correction techniques under diverse observation conditions are analyzed. This study has been conducted in Latvia, where state wide permanent GNSS reference station network has been maintained since year 2005.
Highlights
In last three decades after the RTK (Real-Time Kinematic) – a proven method of positioning in real-time at the cm-level was introduced in early 1990’s – the establishment of CORS (Continuously Operating Reference Station) networks has significantly grown
CORS network is based on the use of several widely spaced permanent stations
On demand from RTK user terminals, which transmit their approximate location to the central server, the central server calculates and transmits correction information or corrected position to the RTK user terminal
Summary
In last three decades after the RTK (Real-Time Kinematic) – a proven method of positioning in real-time at the cm-level was introduced in early 1990’s – the establishment of CORS (Continuously Operating Reference Station) networks has significantly grown. CORS networks are widely used in many areas of economy because of possibilities to significantly reduce costs and time from user point of view. CORS network is based on the use of several widely spaced permanent stations. On demand from RTK user terminals, which transmit their approximate location to the central server, the central server calculates and transmits correction information or corrected position to the RTK user terminal. The benefit of this approach is an overall reduction in the number of RTK base stations required. Several different techniques of RTK correction transmission to CORS network user have been developed and widely used within professionals
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