Solar activity peaks every 11 years with the next maximum
predicted in 2025. This has a direct impact on delays
and stability of GNSS signals and can have a negative
impact on precision positioning. This paper identifies the
challenge to GNSS users and manufacturers and how
Trimble IonoGuard
™
technology is mitigating the effects
in Trimble ProPoint
®
GNSS technology enabled receivers.
Overview
Introduction
High precision GNSS users operating around equatorial and high
latitude regions are familiar with position degradation from ionospheric
disturbances. The last solar cycle, which peaked in 2014, was a relatively
mild cycle compared to the recent historical record. Understanding that
the follow on cycles may not be as moderate or geographically constrained,
Trimble embarked on a data collection and development exercise early in
the current cycle to ensure hardware and software was ready to maximize
customers' productivity. The result is Trimble IonoGuard technology.
We will take a look at how the ionosphere affects GNSS positioning
and how Trimble IonoGuard is being used in the field today to optimize
accuracy, availability and integrity in critical applications.
4 Trimble IonoGuard
™
—Protecting RTK GNSS from Ionospheric disturbances
