Bernese gnss software introductory course in bern

One of the most crucial factors that deteriorate the precision of GNSS positioning is refraction of radio waves in the ionosphere. The feasibility of obtaining such precision is strongly associated with the processing algorithms used and biases that affect observations. In most cases, which involve both real-time and post-processing applications, positions can be determined with subcentimeter accuracy in relative mode. The global navigation satellite system (GNSS) positioning is currently one of the fastest developing measurement techniques, having applications in daily life and scientific research, including wide usage in navigation and surveying (Teunissen et al. The results obtained for the new algorithm, however, demonstrate its wide applicability and a 10-fold improvement in ambiguity success rate during the disturbed day. For a standard geometry-based relative model with weighted ionosphere and troposphere, the results confirmed the dramatic drop of ambiguity resolution efficiency during a violent space weather event. An analysis was carried out for a typical quiet day in solar minimum on Septemand a disturbed day during high solar activity on March 17, 2013. It consists of modifying the observations using the measured rate of TEC variations and hence allows reducing the number of parameters to one ionospheric delay of a reference epoch per satellite and per session. The authors propose an algorithm mitigating the impact of dynamic temporal changes in electron content using the rate of TEC corrections. The study presents the influence of strong total electron content (TEC) fluctuations occurring at high latitudes on rapid static positioning.

Bernese gnss software introductory course in bern