Skip to main content
English
Español
Français
United
Nations
Office for Outer Space Affairs
UN-SPIDER Knowledge Portal
Search
Home
About Us
What is UN-SPIDER?
About UNOOSA
Publications
Jobs
Meet the Team
Contact
Space Application
Satellite Technology
Emergency Mechanisms
Recovery Mechanisms
International Asteroid Warning Network
Space Mission Planning Advisory Group
International Space Weather Initiative
Space Technologies in the UN
User Stories
Links & Resources
Data Application of the Month
Data Sources
GIS and Remote Sensing Software
External In Person Training Opportunities
External Online Training Opportunities
Online Learning Resources
Institutions
Risks & Disasters
Disaster Risk Management
Early Warning Systems
Emergency and Disaster Management
Natural Hazards
Sendai Framework
The UN and Disaster Risk Management
The UN and Early Warning
The UN and Disaster Management
Advisory Support
Advisory Missions
Emergency Support
Virtual Advisory Support
Recommended Practices
Training Activities
Practical Uses
Network
Regional Support Offices
GP-STAR
MHEWS
IWG-SEM
Projects
SPEAR
SEWS-D
EvIDENz
Flood GUIDE
News & Events
News
Events Calendar
UN-SPIDER Events Archive
Monthly Updates
Newsletter
Breadcrumb
Home
terrestrial telecommunication.
terrestrial telecommunication.
terrestrial telecommunication.
