# Galileo Second Generation

> series of Galileo navigation satellite

**Wikidata**: [Q130476470](https://www.wikidata.org/wiki/Q130476470)  
**Source**: https://4ort.xyz/entity/galileo-second-generation

Here’s the structured knowledge entry for **Galileo Second Generation**:

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## Summary  
Galileo Second Generation (GSG) is a series of advanced navigation satellites designed to succeed the Galileo Full Operational Capability satellites. Part of the broader Galileo satellite navigation system, these satellites aim to enhance positioning accuracy and signal resilience. They include models built by Airbus Defence and Space (G2SB1-B) and Thales Alenia Space (G2SB1-A).

## Key Facts  
- **Instance of**: Spacecraft series  
- **Subclass of**: Navigation satellite  
- **Part of**: Galileo satellite navigation system  
- **Follows**: Galileo Full Operational Capability satellites  
- **Has models**: G2SB1-A (built by Thales Alenia Space), G2SB1-B (built by Airbus Defence and Space)  
- **Planned service entry**: No earlier than 2026  
- **Aliases**: Second Generation, Galileo SG, GSG, Galileo G2, G2  

## FAQs  
### Q: What is Galileo Second Generation?  
A: Galileo Second Generation (GSG) is a series of next-generation navigation satellites designed to improve the Galileo system's accuracy and reliability, succeeding the Galileo Full Operational Capability satellites.  

### Q: Who builds Galileo Second Generation satellites?  
A: Two models are being developed: G2SB1-A by Thales Alenia Space and G2SB1-B by Airbus Defence and Space.  

### Q: When will Galileo Second Generation satellites become operational?  
A: The satellites are planned to enter service no earlier than 2026.  

## Why It Matters  
Galileo Second Generation represents a significant upgrade to Europe's satellite navigation infrastructure, ensuring higher precision and robustness for global positioning services. As part of the Galileo system, it competes with other global navigation systems like GPS (USA) and GLONASS (Russia), enhancing Europe's technological autonomy. The improved satellites will support critical applications, from transportation to emergency services, and bolster resilience against signal interference or jamming.  

## Notable For  
- **Advanced models**: Includes G2SB1-A and G2SB1-B, built by leading aerospace companies.  
- **Successor role**: Directly follows the Galileo Full Operational Capability satellites.  
- **Planned enhancements**: Expected to deliver higher accuracy and signal reliability.  

## Body  
### Overview  
Galileo Second Generation (GSG) is a spacecraft series classified as navigation satellites, part of the Galileo satellite navigation system.  

### Models  
- **G2SB1-A**: Built by Thales Alenia Space.  
- **G2SB1-B**: Built by Airbus Defence and Space.  

### Timeline  
- **Service entry**: Planned no earlier than 2026.  

### Predecessor  
- Follows the Galileo Full Operational Capability satellites.  

## Schema Markup  
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "Galileo Second Generation",
  "description": "Series of Galileo navigation satellites designed to succeed the Galileo Full Operational Capability satellites.",
  "sameAs": "https://www.wikidata.org/wiki/Q123456789" 
}
```

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*Note: The Wikidata URL placeholder (`Q123456789`) should be replaced with the actual Wikidata ID if available.*