CONS 127 COMPREHENSIVE EXAM 2026
COMPLETE Q&A STUDY GUIDE
◉ Generic Normalized differnce vegetaion index (NDVI)
Answer: NDVI = NIR-red/NIR+red
- Method of estimating net primary production over varying biome
types, identifying eco-regions, monitoring phenological patterns of
the earths vegetative surface and of assessing the length of the
growing season and dry-down period
◉ Spatial resolution
Answer: Pixel size is a function of platform and sensor geometry for
the instant of measurement
- Refers refers to the number of pixels utilized in construction of the
image.
- Images having higher spatial resolution are composted with
greater number of pixels than those of lower resolution
◉ Uses of spatial Resolution
Answer: Land Cover type
Snow Cover type
,Vegetation phenology
Canopy cover
Sea surface temp
250 m
500 m
1000 m
Forest cover
Insect infestation
Crop forecasting
Coastal wetland erosion
30 m
Tree-based insect infestations
Urban mapping
Road mapping
0.30cm - 5m
◉ Spectral Resolution
Answer: The number and dimensions of specific wavelength
intervals of the electromagnetic spectrum to which a remote sensing
instrument is sensitive
, or
-the # of spectral channels/bands used
- their location in the EMS
-the bandwidth of each channel/band
◉ Temporal Resolution
Answer: Depends on many factors
- Orbit
-Revisit time
- Swath width
-Pointing ability
◉ Special Orbits Used in Earth Observation
Answer: Close Elliptical orbits:
- Polar or near polar orbit
-Orbital inclination measured against equatorial plane
-Satellites cross equator t the same time everyday
-Between 700-1000 km
Geo stationary
COMPLETE Q&A STUDY GUIDE
◉ Generic Normalized differnce vegetaion index (NDVI)
Answer: NDVI = NIR-red/NIR+red
- Method of estimating net primary production over varying biome
types, identifying eco-regions, monitoring phenological patterns of
the earths vegetative surface and of assessing the length of the
growing season and dry-down period
◉ Spatial resolution
Answer: Pixel size is a function of platform and sensor geometry for
the instant of measurement
- Refers refers to the number of pixels utilized in construction of the
image.
- Images having higher spatial resolution are composted with
greater number of pixels than those of lower resolution
◉ Uses of spatial Resolution
Answer: Land Cover type
Snow Cover type
,Vegetation phenology
Canopy cover
Sea surface temp
250 m
500 m
1000 m
Forest cover
Insect infestation
Crop forecasting
Coastal wetland erosion
30 m
Tree-based insect infestations
Urban mapping
Road mapping
0.30cm - 5m
◉ Spectral Resolution
Answer: The number and dimensions of specific wavelength
intervals of the electromagnetic spectrum to which a remote sensing
instrument is sensitive
, or
-the # of spectral channels/bands used
- their location in the EMS
-the bandwidth of each channel/band
◉ Temporal Resolution
Answer: Depends on many factors
- Orbit
-Revisit time
- Swath width
-Pointing ability
◉ Special Orbits Used in Earth Observation
Answer: Close Elliptical orbits:
- Polar or near polar orbit
-Orbital inclination measured against equatorial plane
-Satellites cross equator t the same time everyday
-Between 700-1000 km
Geo stationary
