Remote Sensing Fundamentals: Satellites,
Sensors, and Electromagnetic Spectrum
Save
Terms in this set (309)
What is remote sensing? The science of acquiring information about the
Earth's surface without direct contact, by sensing
and recording reflected or emitted energy.
What is the first requirement for An energy source or illumination to provide
remote sensing? electromagnetic energy to the target of interest.
What happens to energy as it travels It interacts with the atmosphere, which may affect
to the target in remote sensing? the energy before it reaches the target.
What is the role of the sensor in To collect and record the electromagnetic
remote sensing? radiation after it has interacted with the target.
What is the process that follows the Transmission, reception, and processing of the
recording of energy by the sensor? recorded energy to create an image.
, What is involved in the interpretation Extracting information about the target from the
and analysis phase of remote processed image, either visually or digitally.
sensing?
What is the final element of the Application of the extracted information to
remote sensing process? understand the target better or solve a problem.
What are the two fundamental Wavelength and frequency.
properties of electromagnetic
radiation?
How is wavelength represented and Wavelength is represented by the Greek letter
measured? lambda (λ) and measured in meters or its subunits
(nm, µm, cm).
What does frequency refer to in the The number of cycles of a wave passing a fixed
context of electromagnetic point per unit of time, measured in hertz (Hz).
radiation?
What is the relationship between They are inversely related; shorter wavelengths
wavelength and frequency? correspond to higher frequencies and vice versa.
What is the electromagnetic The range of all types of electromagnetic radiation,
spectrum? from shorter wavelengths (gamma rays) to longer
wavelengths (radio waves).
Sensors, and Electromagnetic Spectrum
Save
Terms in this set (309)
What is remote sensing? The science of acquiring information about the
Earth's surface without direct contact, by sensing
and recording reflected or emitted energy.
What is the first requirement for An energy source or illumination to provide
remote sensing? electromagnetic energy to the target of interest.
What happens to energy as it travels It interacts with the atmosphere, which may affect
to the target in remote sensing? the energy before it reaches the target.
What is the role of the sensor in To collect and record the electromagnetic
remote sensing? radiation after it has interacted with the target.
What is the process that follows the Transmission, reception, and processing of the
recording of energy by the sensor? recorded energy to create an image.
, What is involved in the interpretation Extracting information about the target from the
and analysis phase of remote processed image, either visually or digitally.
sensing?
What is the final element of the Application of the extracted information to
remote sensing process? understand the target better or solve a problem.
What are the two fundamental Wavelength and frequency.
properties of electromagnetic
radiation?
How is wavelength represented and Wavelength is represented by the Greek letter
measured? lambda (λ) and measured in meters or its subunits
(nm, µm, cm).
What does frequency refer to in the The number of cycles of a wave passing a fixed
context of electromagnetic point per unit of time, measured in hertz (Hz).
radiation?
What is the relationship between They are inversely related; shorter wavelengths
wavelength and frequency? correspond to higher frequencies and vice versa.
What is the electromagnetic The range of all types of electromagnetic radiation,
spectrum? from shorter wavelengths (gamma rays) to longer
wavelengths (radio waves).
