Which of the following statements is true?

Which of the following statements is true?

Question 1 of 29218MHg5eHgYFe6mjsCjgVhr

Which of the following statements is true?

Question 1 of 29218

Q

Which of the following statements is true?

🔍 Key Concepts

• GPS L1 and L2 frequencies and what each is primarily used for • How ionospheric delay is measured using dual-frequency signals • Which GPS frequency carries the navigation message (data about satellite orbits, time, etc.)

💭 Think About

• First, recall the standard GPS L1 and L2 frequencies and see which answer choices match those known values. • Think about how using two different frequencies helps correct for ionospheric delay—would that function be tied to L1, L2, or both? • Consider which carrier typically carries the actual navigation data that receivers decode for position, and match that to the listed frequency.

✅ Before You Answer

• Verify the correct numerical values of the GPS L1 and L2 frequencies and compare them carefully with all four options. • Confirm which carrier is associated primarily with navigation message transmission in standard civil GPS service. • Check which carrier(s) are used in dual-frequency measurements to estimate ionospheric delay, and whether any option mislabels the function or frequency.