Differential GPS (DGPS)

Differential GPS (DGPS)

What is Differential GPS (DGPS)?

Enhancing Navigation Accuracy with Differential GPS (DGPS)

Differential GPS (DGPS) improves the accuracy of GPS signals through ground-based reference stations, crucial for precise navigation and positioning.

Differential GPS is an enhancement to the standard Global Positioning System (GPS) that provides improved location accuracy.

• Accuracy Improvement: DGPS reduces GPS positional errors, enhancing accuracy from the 15-meter nominal GPS accuracy to within about 3-5 meters.
• Method: It uses a network of fixed ground-based reference stations to broadcast the difference between the positions indicated by the satellite systems and the known fixed positions.
• Application in Aviation: DGPS is used in precision navigation, especially in approaches and landings where high accuracy is required.

Differential GPS is a significant advancement in navigation technology, offering enhanced accuracy crucial for various applications, including aviation.