see url: https://www.osce.org/special-monitoring-mission-to-ukraine/483008
Quote<<<
On the evening of 6 April, an SMM long-range unmanned aerial vehicle
(UAV) was unable to take off from its base in government-controlled
Stepanivka (54km north of Donetsk) to conduct regular monitoring of
areas on both sides of the contact line, due to dual GPS signal
interference assessed as caused by jamming. This is the first time such
interference has prevented a take-off since the Mission launched
long-range UAV operations in October 2014.
Since 21 March 2021, the SMM’s long-range UAVs have been experiencing
increased levels of GPS signal interference on take-off and landing,
affecting both of their GPS receivers, in areas near their base in
Stepanivka, located approximately 25km west-north-west of the contact line.
During pre-flight trials of the long-range UAV on the evening of 7
April, jamming at ground level persisted, impairing safe operation.
High levels of GPS signal interference with either or both GPS receivers
have also been encountered during the UAVs’ regular flights. Over the
last two months, 62.5 per cent of SMM long-range UAV flights encountered
GPS signal interference, and on 75 per cent of the affected flights, it
occurred more than once.
The Mission notes that, in each case, the source of GPS signal
interference could have originated from anywhere within the radius of
tens of kilometres from the UAV’s position.
Any GPS signal interference hinders the Mission’s ability to conduct
effective monitoring and reporting of the security situation in line
with its mandate. Long-range UAVs are an essential part of SMM
operations, especially at night and in areas where the Mission’s
monitoring and freedom of movement are restricted.
The Mission underlines that OSCE Permanent Council Decision No. 1117
specifies that the SMM shall have safe and secure access throughout
Ukraine. The mandate also tasks the Mission to report on any
restrictions of its freedom of movement or other impediments to
fulfilment of its mandate.
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