Which of the following conditions can render...

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Question 1 of 208NDwrBy8rxW4LSV96P7n

Which of the following conditions can render INMARSAT -B communications impossible?

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8NDwrBy8rxW4LSV96P7n

Which of the following conditions can render INMARSAT -B communications impossible?

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🔍 Key Concepts

• Line-of-sight requirement between Inmarsat satellite and ship earth station (SES) antenna • Effect of obstacles and vessel heading on satellite antenna performance • Inmarsat system limits: geostationary orbit coverage and elevation angles

💭 Think About

• For each option, ask: Would this physically prevent the SES antenna from ‘seeing’ the satellite, or just make the signal weaker? • Consider how geostationary satellites are positioned over the equator. What happens to the elevation angle and coverage area as you move toward the poles or far from the satellite’s designated region? • Think about whether more than one of these conditions could occur in real operations and whether they are independent causes of total loss of communication.

✅ Before You Answer

• For each choice, decide if the satellite is still above the radio horizon of the antenna or not. • Check whether an obstruction tied to ship’s own structure and heading can completely block the antenna’s view of the satellite. • Recall that Inmarsat geostationary satellites have a limited coverage footprint and minimum usable elevation angle—verify how that could make communications impossible.

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Question 1 of 208NDwrBy8rxW4LSV96P7n

Which of the following conditions can render INMARSAT -B communications impossible?

Back

Question 1 of 20

8NDwrBy8rxW4LSV96P7n

Which of the following conditions can render INMARSAT -B communications impossible?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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