Which statement about S-Band is true regarding horizon distance?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the Radar Observer Unlimited Exam with flashcards and multiple-choice questions that include hints and explanations. Equip yourself for examination success!

Multiple Choice

Which statement about S-Band is true regarding horizon distance?

Explanation:
Radio horizon distance isn’t set purely by geometry—it’s affected by wavelength because longer wavelengths diffract more around the Earth's curvature and the atmosphere adds a small, frequency-dependent refraction. S-Band uses a longer wavelength than X-Band, so its signals bend a bit more at the edges of the path, extending the effective line-of-sight slightly. With the same antenna height, this means S-Band tends to have a slightly longer horizon than X-Band. The difference is small, but real. The idea that S-Band has higher frequency than X-Band isn’t correct, and S-Band is indeed used in navigation and radar contexts, so that option isn’t accurate either.

Radio horizon distance isn’t set purely by geometry—it’s affected by wavelength because longer wavelengths diffract more around the Earth's curvature and the atmosphere adds a small, frequency-dependent refraction. S-Band uses a longer wavelength than X-Band, so its signals bend a bit more at the edges of the path, extending the effective line-of-sight slightly. With the same antenna height, this means S-Band tends to have a slightly longer horizon than X-Band. The difference is small, but real. The idea that S-Band has higher frequency than X-Band isn’t correct, and S-Band is indeed used in navigation and radar contexts, so that option isn’t accurate either.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy