New realisation of the ITRS reference system

  How many millimetres has the sea level risen? How fast are the continents moving? How dependent is the impact of high and low pressure areas on the altitude of landmasses? In order to answer these questions, measurements are being made around the clock at more than 1700 globally distributed observing stations. The data are […]

Chirp jammers: GNSS hit and runs

  You have got your base station setup in an open environment, its position has been properly surveyed and it is tracking signals from all satellites visible overhead with good signal-to-noise levels. What could possibly go wrong? Here’s what can and did go wrong on one building site in 2015. A major construction project was […]