# Syracuse 4

> French military satellite constellation

**Wikidata**: [Q28493319](https://www.wikidata.org/wiki/Q28493319)  
**Source**: https://4ort.xyz/entity/syracuse-4

## Summary
Syracuse 4 is a French military satellite constellation designed to provide secure communication services for military operations. It comprises two satellites, Syracuse 4A and 4B, and is part of the ComSat NG (Communication Satellite New Generation) program. The system supports France's defense and security needs by ensuring resilient, high-capacity communications.

## Key Facts
- Syracuse 4 is a military satellite constellation operated by France.
- It includes two satellites: Syracuse 4A (launched in 2020) and Syracuse 4B (launched in 2022).
- The system is also known by the aliases ComSat NG and ComSat-NG.
- It is classified as both an artificial satellite and a military satellite.
- Syracuse 4 replaces the older Syracuse 3 system to enhance communication capabilities.
- The satellites were developed by Airbus Defence and Space, with Thales Alenia Space contributing payloads.
- The constellation uses Ka-band and X-band frequencies for secure military transmissions.
- Syracuse 4 provides coverage for French and allied forces globally, including hard-to-reach regions.
- The program is part of France’s broader effort to modernize its military space infrastructure.

## FAQs
### Q: What is the purpose of the Syracuse 4 satellite constellation?
A: Syracuse 4 provides secure, high-capacity communication services for the French military, supporting operations worldwide with advanced Ka-band and X-band technologies.

### Q: When were the Syracuse 4 satellites launched?
A: Syracuse 4A was launched in 2020, and Syracuse 4B followed in 2022, completing the constellation.

### Q: Who developed the Syracuse 4 satellites?
A: The satellites were developed by Airbus Defence and Space, with payloads provided by Thales Alenia Space.

## Why It Matters
Syracuse 4 is critical to France’s military capabilities, addressing the need for secure, reliable communication in an increasingly contested geopolitical environment. By replacing aging infrastructure, the constellation ensures interoperability with allied forces and resilience against electronic warfare threats. Its advanced technology, including resistance to jamming and cyberattacks, underscores its role in maintaining France’s strategic autonomy and operational readiness. Syracuse 4 also reflects broader trends in military modernization, where space-based assets are essential for command, control, and real-time data transmission during missions.

## Notable For
- **Modernization of French Military Communications**: Replaces the Syracuse 3 system with enhanced capacity and security.
- **Advanced Technology**: Utilizes Ka-band and X-band frequencies, with anti-jamming and cyber-resilient features.
- **Global Coverage**: Ensures connectivity for French forces across the globe, including remote or hostile territories.
- **Collaborative Development**: Result of partnerships between Airbus, Thales, and the French government.
- **Dual-Satellite Redundancy**: Two satellites (4A and 4B) ensure continuity of service and operational flexibility.

## Body
### Overview
Syracuse 4 is a French military satellite constellation developed under the ComSat NG program. It consists of two satellites, Syracuse 4A and 4B, launched in 2020 and 2022, respectively. The system is designed to deliver secure, high-throughput communications for military operations, integrating with France’s broader defense strategy.

### Components
- **Syracuse 4A**: Launched in 2020, this satellite provides Ka-band and X-band communications.
- **Syracuse 4B**: Launched in 2022, it complements 4A, ensuring redundancy and expanded coverage.
- **Payloads**: Built by Thales Alenia Space, the payloads enable advanced encryption and anti-jamming capabilities.

### Development and Launch
- **Manufacturers**: Airbus Defence and Space (prime contractor) and Thales Alenia Space (payloads).
- **Launch Vehicles**: Syracuse 4A was launched aboard an Ariane 5 rocket; 4B used a Falcon 9.
- **Orbit**: Geostationary orbit, providing fixed coverage of key operational zones.

### Operational Role
- **Secure Communications**: Supports command, control, intelligence, surveillance, and reconnaissance (C2ISR) missions.
- **Interoperability**: Compatible with NATO and allied systems, enhancing joint operations.
- **Resilience**: Designed to withstand electronic warfare and cyber threats, critical for modern military engagements.

### Technical Specifications
- **Frequencies**: Ka-band (civil/secure) and X-band (military-exclusive).
- **Coverage**: Global, with focused coverage on French territories and strategic regions.
- **Lifespan**: Designed for 15+ years of operational use.