MCQ_Lecture2_Remote sensing fundamentals
18 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary difference between FOV and IFOV?

  • FOV is the minimum distance, while IFOV is the maximum distance
  • FOV is the whole area visible, while IFOV is the smallest detail within that area (correct)
  • FOV is the area visible at a close distance, while IFOV is the area visible at a far distance
  • FOV is the area visible horizontally, while IFOV is the area visible vertically

    • What is the advantage of a small IFOV?

  • It is better suited for high spatial resolution (correct)
  • It is less sensitive to scene radiance
  • It can distinguish very slight energy differences
  • It is more sensitive to background electronic noise

    • What is the relationship between IFOV and signal-to-noise ratio?

  • IFOV is inversely proportional to signal-to-noise ratio
  • A large IFOV results in a higher signal-to-noise ratio (correct)
  • IFOV has no effect on signal-to-noise ratio
  • A small IFOV results in a higher signal-to-noise ratio

    • What is the trade-off in designing multispectral scanner systems?

    <p>Between high spatial resolution and high radiometric resolution</p> Signup and view all the answers

    What is the benefit of a large IFOV?

    <p>It is more sensitive to scene radiance</p> Signup and view all the answers

    What is not mentioned as a type of image resolution?

    <p>Temporal resolution</p> Signup and view all the answers

    What is the main difference between FOV and IFOV?

    <p>FOV is the full field of view, while IFOV is the instantaneous field of view</p> Signup and view all the answers

    What is the purpose of the Enhanced Thematic Mapper Plus (ETM+) sensor?

    <p>To collect data in multiple spectral bands</p> Signup and view all the answers

    Which of the following satellites has a medium resolution sensor?

    <p>Landsat</p> Signup and view all the answers

    What is the benefit of a higher repeat cycle in a satellite?

    <p>It allows for more frequent revisits of the same area</p> Signup and view all the answers

    What is the main difference between a medium resolution satellite and a high resolution satellite?

    <p>The spatial resolution of the image</p> Signup and view all the answers

    What is the main advantage of a smaller IFOV?

    <p>It increases the resolution of the image</p> Signup and view all the answers

    What is the characteristic of a geostationary orbit in terms of its period of rotation?

    <p>Equal to the period of rotation of the Earth</p> Signup and view all the answers

    What determines the ground track of a satellite in a polar orbit?

    <p>The satellite's inclination over the Earth's polar regions</p> Signup and view all the answers

    What is the advantage of a geostationary orbit in terms of revisit time?

    <p>Multiple observations per day</p> Signup and view all the answers

    What is the purpose of an oscillating mirror in an across-track scanner?

    <p>To scan the ground in a perpendicular direction</p> Signup and view all the answers

    What is the relationship between the angular field of view (θ) and the swath of a scanner?

    <p>The swath is equal to 2H*tan(θ/2)</p> Signup and view all the answers

    What type of scanner is characterized by a linear array of detectors?

    <p>Along-track scanner</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser