Podcast
Questions and Answers
What do spectral signatures primarily represent?
What do spectral signatures primarily represent?
- The topographic features of an object
- The spatial characteristics of an object
- The spectral response of an object (correct)
- The thermal properties of an object
What is the primary factor affecting an object's spectral reflectance?
What is the primary factor affecting an object's spectral reflectance?
- Solar azimuth
- Nature of the target
- Solar elevation angle
- All of the above (correct)
What is the characteristic spectral reflectance pattern of strong vegetation?
What is the characteristic spectral reflectance pattern of strong vegetation?
- A flat, uniform reflectance pattern
- A gradual increase in reflectance with wavelength
- A gradual decrease in reflectance with wavelength
- A 'peak and valley' structure (correct)
What is the term for the ratio between the irradiance and the radiant emittance of an object?
What is the term for the ratio between the irradiance and the radiant emittance of an object?
What is the primary cause of the valleys in the visible portion of the spectral reflectance curve for vegetation?
What is the primary cause of the valleys in the visible portion of the spectral reflectance curve for vegetation?
At what wavelengths do inclines in reflectance occur in the spectral reflectance curve for vegetation?
At what wavelengths do inclines in reflectance occur in the spectral reflectance curve for vegetation?
What is the primary reason for the low reflectance of vegetation in the red and blue regions of the electromagnetic spectrum?
What is the primary reason for the low reflectance of vegetation in the red and blue regions of the electromagnetic spectrum?
Which vegetation index is sensitive to changes in vegetation canopy water content and indicates water stress?
Which vegetation index is sensitive to changes in vegetation canopy water content and indicates water stress?
What is the primary advantage of atmospherically corrected vegetation indices?
What is the primary advantage of atmospherically corrected vegetation indices?
Which type of vegetation index is developed from simple band ratios?
Which type of vegetation index is developed from simple band ratios?
What is the primary purpose of the Vegetation Condition Index (VCI)?
What is the primary purpose of the Vegetation Condition Index (VCI)?
Which vegetation index minimizes the influence of soil brightness?
Which vegetation index minimizes the influence of soil brightness?
What is the primary application of the Vegetation Index formula (B8-B4)/(B8+B4) in MODIS data analysis?
What is the primary application of the Vegetation Index formula (B8-B4)/(B8+B4) in MODIS data analysis?
Which Sentinel band combination uses the combination of NIR, red, and green bands?
Which Sentinel band combination uses the combination of NIR, red, and green bands?
What is the primary purpose of the Agriculture band combination in MODIS data analysis?
What is the primary purpose of the Agriculture band combination in MODIS data analysis?
What is the main characteristic of healthy vegetation in the Color Infrared band combination?
What is the main characteristic of healthy vegetation in the Color Infrared band combination?
What is the primary function of the Short-Wave Infrared band combination in MODIS data analysis?
What is the primary function of the Short-Wave Infrared band combination in MODIS data analysis?
What is the color assigned to urban areas in the Color Infrared band combination?
What is the color assigned to urban areas in the Color Infrared band combination?
