Glossary

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UAV :

Unmanned Aerial Vehicle

UAVs :

Unmanned Aerial Vehicles

UDP :

User Datagram Protocol

UDRE :

User Differential Range Error

UEE :

User Equipment Error

UERE :

User Equivalent Range Error

UHF :

Ultra High Frequency

UIVD :

User Ionospheric Vertical Delay

UIVE :

User Ionospheric Vertical Error

UNE :

User Navigation Error

UPS :

Uninterruptible Power Supply

UR :

User Requirements

UR/R :

User Requirements Review

URA :

User Range Accuracy

URD :

User Requirements Document

URE :

User Range Error

US :

United States

USAT :

Ultra-Small Aperture Terminal (satellites terminal)

USRD :

User Segment Requirements Document

UTC :

Coordinated Universal Time

UWB :

Ultra-wideband

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