Podcast
Questions and Answers
What type of remote sensors measure radiant energy reflected or emitted by the Earth?
What type of remote sensors measure radiant energy reflected or emitted by the Earth?
- Radar sensors
- Passive remote sensors (correct)
- Satellite sensors
- Active remote sensors
Which type of remote sensors provide their own energy source for illumination?
Which type of remote sensors provide their own energy source for illumination?
- Passive sensors
- Active sensors (correct)
- Satellite sensors
- Radar sensors
What do laser and radar instruments primarily operate as in the field of remote sensing?
What do laser and radar instruments primarily operate as in the field of remote sensing?
- Satellite sensors
- Radar sensors
- Active sensors (correct)
- Passive sensors
What is the primary source of energy for passive remote sensors?
What is the primary source of energy for passive remote sensors?
In what portion of the electromagnetic spectrum do most active sensors operate?
In what portion of the electromagnetic spectrum do most active sensors operate?
What is the function of a laser rangefinder in remote sensing?
What is the function of a laser rangefinder in remote sensing?
Which law states that the total emitted radiation from a blackbody is proportional to the fourth power of its absolute temperature?
Which law states that the total emitted radiation from a blackbody is proportional to the fourth power of its absolute temperature?
What type of scattering is a function of the wavelength of the incident radiant energy and the size of the gas molecule?
What type of scattering is a function of the wavelength of the incident radiant energy and the size of the gas molecule?
Which concept refers to a specific range of electromagnetic wavelengths within the Earth's atmosphere where radiation can pass through relatively unimpeded by atmospheric gases?
Which concept refers to a specific range of electromagnetic wavelengths within the Earth's atmosphere where radiation can pass through relatively unimpeded by atmospheric gases?
What is the measure of the optical density of a substance?
What is the measure of the optical density of a substance?
Which type of scattering occurs due to the cumulative effect of the absorption by various constituents, causing the atmosphere to 'close down' in certain regions of the spectrum?
Which type of scattering occurs due to the cumulative effect of the absorption by various constituents, causing the atmosphere to 'close down' in certain regions of the spectrum?
What is the time rate of flow of energy onto, off of, or through a surface called?
What is the time rate of flow of energy onto, off of, or through a surface called?
In what law is it stated that the peak wavelength of radiation emitted by a black body is inversely proportional to its absolute temperature?
In what law is it stated that the peak wavelength of radiation emitted by a black body is inversely proportional to its absolute temperature?
What is used for precise ranging (distance measurement)?
What is used for precise ranging (distance measurement)?
