# GPS Block IIR

> GPS satellite block

**Wikidata**: [Q121831559](https://www.wikidata.org/wiki/Q121831559)  
**Source**: https://4ort.xyz/entity/gps-block-iir

## Summary
GPS Block IIR is a series of satellites in the Global Positioning System (GPS) constellation, developed by the United States Air Force and later the United States Space Force. It succeeded the GPS Block IIA and was followed by the GPS Block IIRM, serving as an intermediate upgrade with improved capabilities.

## Key Facts
- Part of the Global Positioning System (GPS) satellite network
- Operated by the United States Air Force and later the United States Space Force
- Succeeded the GPS Block IIA and was succeeded by the GPS Block IIRM
- Manufactured by Lockheed Martin
- Includes specific satellites: USA-132, USA-145, USA-150, USA-151, USA-154, USA-156, USA-166, USA-168, USA-175, USA-177
- Classified as a spacecraft model and a subclass of GPS satellite
- Originated in the United States

## FAQs
### Q: What was the purpose of the GPS Block IIR satellites?
A: The GPS Block IIR satellites were part of the Global Positioning System (GPS) constellation, designed to provide improved positioning, navigation, and timing services compared to earlier blocks like the GPS Block IIA.

### Q: Who operated the GPS Block IIR satellites?
A: The GPS Block IIR satellites were operated by the United States Air Force and later by the United States Space Force.

### Q: What was the relationship between GPS Block IIR and other GPS satellite blocks?
A: The GPS Block IIR succeeded the GPS Block IIA and was succeeded by the GPS Block IIRM, serving as an intermediate upgrade in the GPS satellite series.

### Q: Which satellites are part of the GPS Block IIR series?
A: Specific satellites in the GPS Block IIR series include USA-132, USA-145, USA-150, USA-151, USA-154, USA-156, USA-166, USA-168, USA-175, and USA-177.

### Q: Who manufactured the GPS Block IIR satellites?
A: The GPS Block IIR satellites were manufactured by Lockheed Martin.

## Why It Matters
The GPS Block IIR satellites played a crucial role in enhancing the capabilities of the Global Positioning System (GPS). As an intermediate upgrade between the GPS Block IIA and the GPS Block IIRM, the IIR series introduced improvements that strengthened the GPS network's reliability and accuracy. These satellites were operated by the United States Air Force and later the United States Space Force, ensuring continuous service for military and civilian users. The GPS Block IIR series contributed to the broader mission of providing precise positioning, navigation, and timing services worldwide, supporting a wide range of applications from defense to commercial and scientific endeavors.

## Notable For
- Served as an intermediate upgrade between GPS Block IIA and GPS Block IIRM
- Improved capabilities over earlier GPS satellite blocks
- Operated by both the United States Air Force and the United States Space Force
- Manufactured by Lockheed Martin
- Included specific satellites like USA-132, USA-145, and others

## Body
### Overview
The GPS Block IIR is a series of satellites that were part of the Global Positioning System (GPS) constellation. These satellites were developed as an intermediate upgrade between the GPS Block IIA and the GPS Block IIRM, offering enhanced capabilities compared to their predecessors.

### Development and Operation
The GPS Block IIR satellites were operated by the United States Air Force and later by the United States Space Force. They were manufactured by Lockheed Martin and included specific satellites such as USA-132, USA-145, USA-150, USA-151, USA-154, USA-156, USA-166, USA-168, USA-175, and USA-177.

### Role in GPS
The GPS Block IIR satellites played a significant role in the GPS network by providing improved positioning, navigation, and timing services. They succeeded the GPS Block IIA and were succeeded by the GPS Block IIRM, ensuring a seamless transition in the GPS constellation.

### Technical Specifications
The GPS Block IIR satellites were classified as spacecraft models and subclasses of GPS satellites. They were designed to enhance the overall performance and reliability of the GPS system, contributing to its widespread use in military, civilian, and scientific applications.

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "GPS Block IIR",
  "description": "A series of satellites in the Global Positioning System (GPS) constellation, developed by the United States Air Force and later the United States Space Force.",
  "sameAs": ["https://www.wikidata.org/wiki/Q123456789", "https://en.wikipedia.org/wiki/GPS_Block_IIR"],
  "additionalType": "SpacecraftModel"
}

## References

1. [Source](https://space.skyrocket.de/doc_sdat/navstar-2r.htm)