Question 6. The Global Positioning System (GPS) is the most widely used GNSS. In point form, briefly answer the followin
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Question 6. The Global Positioning System (GPS) is the most widely used GNSS. In point form, briefly answer the followin
Question 6. The Global Positioning System (GPS) is the most widely used GNSS. In point form, briefly answer the following questions: i. Why is it necessary for a GPS receiver to observe at least four satellites in order to reliably measure its location on Earth? ii. Approximately what accuracy (horizontal and vertical) would you expect to achieve with a single, low cost, handheld GPS receiver? iii. Explain why differential GPS methods can be used to improve the accuracy of GPS measurements. iv. Low accuracy GPS use only the PRN signal; higher accuracy GPS use carrier phase methods. Explain this statement. V. Type answer, please don't hand write