Understanding Commercial Satellite Systems
Modern life depends on an invisible infrastructure orbiting above us. From GPS navigation and global communications to weather forecasting and emergency response, commercial satellites form the backbone of critical global systems.
Understanding how they work—and who controls them—is essential for anyone serious about preparedness.
On this page
- What Are Commercial Satellites?
- Orbital Layers: Where Satellites Live
- Major Commercial Satellite Providers
- Earth Observation & Imaging Satellites
- How Ground Stations Work
- Provider Comparison: Starlink vs Iridium vs Globalstar
- Radio Over Satellite: What Works Where
- Can POC Radios Work Over Starlink?
- Preparedness & Risk Considerations
- Final Assessment
What Are Commercial Satellites?
Commercial satellites are privately or publicly operated systems in space that provide services for business, government, and civilian use. Unlike military satellites, these systems are accessible—directly or indirectly—to the public.
They fall into several major categories:
- Communications (internet, phone, TV)
- Earth Observation (imaging and analytics)
- Navigation (GPS and timing)
- Weather Monitoring
- Emergency & Rescue Services
Orbital Layers: Where Satellites Live
Low Earth Orbit (LEO)
- Altitude
- ~300–1,200 miles
- Characteristics
- Fast, low latency, large constellations
- Used by
- Starlink, OneWeb, Iridium
Why it matters:
LEO enables near real-time communications and global coverage—but requires hundreds or thousands of satellites.
Medium Earth Orbit (MEO)
- Altitude
- ~12,000 miles
- Use
- Used primarily for navigation systems
- Examples
- GPS, Galileo
Why it matters:
MEO provides stable, global positioning and timing—critical for aviation, finance, and military operations.
Geostationary Orbit (GEO)
- Altitude
- ~22,236 miles
- Position
- Satellites remain fixed over one point on Earth
- Used for
- TV broadcasting; Weather monitoring; Long-range communications
Why it matters:
A single satellite can cover an entire continent—but with higher latency.
Major Commercial Satellite Providers
Low Earth Orbit Networks
SpaceX (Starlink)
- Massive LEO constellation
- High-speed satellite internet
- Rapid global expansion
Iridium Communications
- True global coverage (including poles)
- Satellite phone and push-to-talk services
Globalstar
- Regional coverage focus
- IoT and emergency messaging
OneWeb
- Enterprise and government connectivity
Geostationary & Broadcast Providers
DirecTV
- Satellite TV distribution across the U.S.
SiriusXM
- Nationwide satellite radio and audio services
Viasat & Hughes Network Systems
- GEO-based internet services
Earth Observation & Imaging Satellites
Maxar Technologies
- Ultra-high-resolution imagery
Planet Labs
- Daily global imaging using small satellites
BlackSky
- Real-time monitoring and analytics
Why it matters:
These systems provide near real-time intelligence on:
- Supply chain disruptions
- Military activity
- Natural disasters
How Ground Stations Work
Satellites don’t operate alone—they rely on ground infrastructure.
Key Components:
- Ground Stations (Earth Stations):
- Communicate with satellites
- Teleports:
- Large hubs routing data to terrestrial networks
- Network Operations Centers (NOCs):
- Control satellite fleets
How it connects:
- User device → satellite
- Satellite → ground station
- Ground station → internet backbone
Reality check:
The number and distribution of ground stations determine:
- Network resilience
- Latency
- Vulnerability to disruption
Provider Comparison: Starlink vs Iridium vs Globalstar
| Feature | Starlink | Iridium | Globalstar |
|---|---|---|---|
| Orbit | LEO | LEO | LEO |
| Coverage | Expanding global | True global | Regional |
| Latency | Low | Moderate | Moderate |
| Internet | Yes (broadband) | Limited | Limited |
| Voice | VoIP | Native satphone | Limited |
| Push-to-Talk | No | Yes | No |
Key Insight:
- SpaceX Starlink = high-speed internet
- Iridium Communications = mission-critical comms
- Globalstar = niche + emergency
Radio Over Satellite: What Works Where
- Iridium:
- Native satellite push-to-talk and handheld radios
- Globalstar:
- Supports emergency messaging (e.g., SPOT devices)
- Starlink:
- ❗ Not a direct radio network
Important distinction:
Starlink provides internet, not satellite radio.
Can POC Radios Work Over Starlink?
Yes—but indirectly.
Push-to-talk over cellular (PoC) radios can work over Starlink if:
- Connected via Wi-Fi or router
- Using IP-based communication platforms
Limitation:
- No native satellite fallback
- Requires Starlink terminal + power
Preparedness & Risk Considerations
Commercial satellite systems are resilient—but not invulnerable.
Key risks:
- Ground station targeting
- Space debris collisions
- Signal jamming/spoofing
- Cyber attacks on network infrastructure
Key takeaway:
Redundancy matters.
No single provider is sufficient for critical operations.
Final Assessment
Commercial satellite networks are no longer optional infrastructure—they are critical to:
- Communications
- Navigation
- Intelligence
- Emergency response
Understanding their strengths, limitations, and dependencies allows you to stay ahead of disruption.
Remember, Fortune Favors the Prepared
Semper Paratus, Semper Gumby