This article has provided an overview of global GPS jamming
and service reduction between 2020 and 2023 using recent
observations from the Spire constellation. The service
power reduction and jamming power increases are highly
correlated on a regional scale, showing that Europe and
the Middle East have been most impacted by the ongoing
geopolitical conflicts. The area of the impacted regions
has widened significantly from 2021 to 2023 and spread
to Northern Europe. The dual-use civil and military GPS
technology and services are currently experiencing an
unprecedented scale of electronic warfare attacks.