Satellite Internet — Technology Wiki

Overview

Direct Answer

Satellite internet is a broadband connectivity service delivered via orbital satellite constellations that transmit and receive signals directly to user ground terminals, enabling internet access in regions where terrestrial infrastructure remains cost-prohibitive or technically infeasible.

How It Works

User terminals communicate with satellites positioned in low Earth orbit (LEO), medium Earth orbit (MEO), or geostationary orbit (GEO), which relay signals to ground stations connected to the internet backbone. LEO systems offer lower latency through proximity, whilst GEO systems provide wider coverage areas from fixed positions. Signal transmission occurs via radio frequency bands, typically Ku-band or Ka-band, with modulation and routing handled by network operation centres.

Why It Matters

This technology addresses digital divide challenges in rural, maritime, and developing regions where laying fibre or cellular infrastructure proves economically unviable. Organisations require connectivity solutions for disaster recovery, remote operations, and regulatory compliance in underserved territories, making orbital networks strategically valuable for enterprise continuity and expansion.

Common Applications

Applications include emergency response communications during infrastructure failures, maritime vessel connectivity, agricultural monitoring in remote regions, and backup connectivity for critical facilities. Rural broadband programmes, remote research stations, and oil and gas operations increasingly depend on this infrastructure.

Key Considerations

Latency varies significantly by orbital altitude and remains higher than terrestrial networks; GEO systems experience 500+ millisecond delays unsuitable for real-time applications. Weather interference, equipment costs, and regulatory spectrum allocation constraints present deployment considerations.

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