Which benefit does DGPS provide over standard GPS?

Which benefit does DGPS provide over standard GPS?

• A. Wider service area
• B. Lower costs
• C. Greater accuracy
• D. Less susceptibility to interference

Answer: (C)

DGPS, or Differential Global Positioning System, offers significant advantages over standard GPS, particularly in terms of accuracy. While standard GPS can provide position accuracy typically within 10 to 20 meters, DGPS enhances this by using ground-based reference stations. These stations transmit corrections to the satellite signals that GPS receivers use, effectively reducing the errors caused by atmospheric conditions, satellite orbit discrepancies, and other factors. The primary benefit of DGPS is its ability to achieve a positional accuracy of up to 1 meter or better, making it particularly valuable for applications requiring high precision, such as marine navigation and surveying. This improved accuracy is essential for ensuring safety and efficiency in operations where precise positioning is crucial. Other available options may suggest benefits such as a wider service area, lower costs, or less susceptibility to interference, but these do not directly relate to the characteristic enhancements that DGPS provides compared to standard GPS systems. Thus, when considering these aspects, greater accuracy is indeed the most significant benefit of DGPS.

DGPS, or Differential Global Positioning System, offers significant advantages over standard GPS, particularly in terms of accuracy. While standard GPS can provide position accuracy typically within 10 to 20 meters, DGPS enhances this by using ground-based reference stations. These stations transmit corrections to the satellite signals that GPS receivers use, effectively reducing the errors caused by atmospheric conditions, satellite orbit discrepancies, and other factors.

The primary benefit of DGPS is its ability to achieve a positional accuracy of up to 1 meter or better, making it particularly valuable for applications requiring high precision, such as marine navigation and surveying. This improved accuracy is essential for ensuring safety and efficiency in operations where precise positioning is crucial.

Other available options may suggest benefits such as a wider service area, lower costs, or less susceptibility to interference, but these do not directly relate to the characteristic enhancements that DGPS provides compared to standard GPS systems. Thus, when considering these aspects, greater accuracy is indeed the most significant benefit of DGPS.