18 Questions
What is the primary difference between FOV and IFOV?
FOV is the whole area visible, while IFOV is the smallest detail within that area
What is the advantage of a small IFOV?
It is better suited for high spatial resolution
What is the relationship between IFOV and signal-to-noise ratio?
A large IFOV results in a higher signal-to-noise ratio
What is the trade-off in designing multispectral scanner systems?
Between high spatial resolution and high radiometric resolution
What is the benefit of a large IFOV?
It is more sensitive to scene radiance
What is not mentioned as a type of image resolution?
Temporal resolution
What is the main difference between FOV and IFOV?
FOV is the full field of view, while IFOV is the instantaneous field of view
What is the purpose of the Enhanced Thematic Mapper Plus (ETM+) sensor?
To collect data in multiple spectral bands
Which of the following satellites has a medium resolution sensor?
Landsat
What is the benefit of a higher repeat cycle in a satellite?
It allows for more frequent revisits of the same area
What is the main difference between a medium resolution satellite and a high resolution satellite?
The spatial resolution of the image
What is the main advantage of a smaller IFOV?
It increases the resolution of the image
What is the characteristic of a geostationary orbit in terms of its period of rotation?
Equal to the period of rotation of the Earth
What determines the ground track of a satellite in a polar orbit?
The satellite's inclination over the Earth's polar regions
What is the advantage of a geostationary orbit in terms of revisit time?
Multiple observations per day
What is the purpose of an oscillating mirror in an across-track scanner?
To scan the ground in a perpendicular direction
What is the relationship between the angular field of view (θ) and the swath of a scanner?
The swath is equal to 2H*tan(θ/2)
What type of scanner is characterized by a linear array of detectors?
Along-track scanner
Learn about the Field of View (FOV) and Instantaneous Field of View (IFOV) in remote sensing, including their definitions, relationships, and applications in airborne and satellite imaging.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
