Communications of the ACM
Zero Downtime For Gnss Applications
The CALIBRA project team has developed new solutions for the impact of ionospheric disturbance on the positioning of global navigation satellite systems.
Credit: Videojug.com
The CALIBRA project team has developed new solutions to counter the impact of the phenomenon known as ionospheric disturbance, which can affect the positioning of global navigation satellite systems (GNSS).
Solar flares can cause a sudden increase in radio-wave absorption that will delay the propagation of signals and ultimately impact high-accuracy GNSS techniques. The CALIBRA team first confirmed ionospheric scintillation and variations in total electron content (TEC) directly impact the functioning of GNSS Precise Point positioning and Real Time Kinematic (RTK) positioning, and then characterized the disturbances with a suitable metric.
The project produced a short-term empirical model for forecasting TEC and scintillation and tested it using a network of monitor receivers that collect more than 10 million observations on global navigation systems daily.
The team tested the algorithm in actual precision agriculture and offshore operations. The software offers visualization and mining techniques, and the data has benefited users in more than 20 countries.
The researchers say the RTK engine and other solutions should help reduce downtime and financial losses caused by ionospheric disturbance.
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