Mitigating solar cycle GNSS disruptions in mining operations
Automated mine sites rely heavily on precise GNSS positioning. Discover how Trimble IonoGuard technology mitigates ionospheric scintillation to maintain uninterrupted operation and safety during strong scintillation events.
Key achievements
Solutions leveraged
Summary
Background
Preparing for solar-triggered signal disruptions
Automated and autonomous operations are essential and expanding parts of mine operations worldwide. Technology is built into nearly every task, with a large majority dependent on global navigation satellite systems (GNSS) for precise positioning, safe navigation and productivity gains. Mine sites include equipment ranging from remote-controlled and robotic drilling machines to driverless haul trucks. The global mining automation market size is anticipated to grow from $3.6 billion in 2024 to $5.1 billion by 2029.
However, severe challenges arise when GNSS signals go down or deliver inaccurate data, particularly in high-latitude regions such as Canada as the influences of Solar Cycle 25 grow. The 11-year solar cycle began in 2019 and is anticipated to peak between 2024 and 2026, when ionospheric scintillation (signal noise) reaches its highest level. Severe scintillation can prevent GNSS receivers from locking onto signals and introduce positioning errors of several meters. For autonomous vehicles and automated slope stability monitoring, these errors can cause long-haul truck accidents, false alarms or unexpected downtime.
Solution
Mitigating ionospheric noise with advanced GNSS technology
To address signal disruptions caused by severe atmospheric conditions, leading manufacturers continue to refine receiver tracking and processing algorithms. Key adjustments include ensuring receivers are frequency independent during ionospheric storms, as phase and carrier delays vary significantly across frequencies.
To prepare for solar maximums, Trimble leveraged comprehensive data collection exercises to develop IonoGuard technology. Designed to mitigate cycle slips and improve signal tracking of disrupted GNSS signals, IonoGuard adds a layer of protection that enables precise GNSS measurements during intense atmospheric disturbances. It increases the likelihood of uninterrupted positioning data around the clock, providing real-time ionospheric correction and error detection.
Results
Securing productivity and precision in high-risk zones
During recent solar storm events in Brazil, Peru and northern Sweden, the implementation of IonoGuard demonstrated significant improvements in both horizontal and vertical positional accuracy.
Because technology validation in mine environments can take six months or longer, mine operators must work with technology partners to implement and test validated solutions well before solar activity reaches peak levels. Implementing robust mitigation strategies ensures autonomous mining workflows remain safe, precise and productive.
