Which level of accuracy can be obtained...

Question 1 / 2707066636ee928f7522a1c519a56

Question 1 of 2707066636ee928f7522a1c519a56

Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?

Back

Question 1 of 27070

Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?

🔍 Key Concepts

• Differential GPS (DGPS) improves basic GPS accuracy by using shore-based reference stations • The U.S. Coast Guard Maritime DGPS system is designed for high-precision navigation near the coast and in harbors • Think about typical GPS accuracy (without DGPS) versus enhanced accuracy with corrections

💭 Think About

• First, recall the approximate accuracy of standard GPS available to the public. Is it usually closer to 10 meters, 50 meters, or 100 meters? • Next, ask yourself: when we apply differential corrections, does the error get larger or smaller than standard GPS? By how much? • Look at the answer choices and consider: which of these distances would make sense for safe harbor and coastal navigation where precise positioning is important?

✅ Before You Answer

• Verify that DGPS is more accurate than uncorrected GPS, not less accurate • Confirm that maritime DGPS is designed for meter-level accuracy, not tens of meters • Before choosing, compare each option to what you know about typical consumer GPS accuracy to see which seems the most "improved" value

Question 1 of 27070

Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?

10 meters

20 meters

50 meters

92 meters

Loading interactive features...