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Final Exam--Remote Sensing
Xiao
39
Other
Not Applicable
05/09/2006

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Term
spectral reflectance curve
Definition
relectance percent over series of wavelengths
Term
two types of satellite orbits
Definition
polar and geostationary
Term
what is a scanning radiometer
Definition
passive system
Term
rgb
Definition
red green blue
Term
how many spectral images does AVIRIS take at one time?
Definition
224
Term
types of image resolution
Definition
spatial, spectral, temporal, and radiometric
Term
LANDSAT's spatial resolution
Definition
80 m
Term
TM resolution?
Definition
30m
Term
spectral
Definition
defines range of light stored in image
Term
each colored layer in remote sensing layer
Definition
channel or spectral band
Term
MSS Landsat Multispectral scanner
Definition
4 bands red green blue infrared
Term
radiometric resolution
Definition
then number of brightness levels the sensor can record
Term
1,3, 6, 8, 16 bit
Definition
2,8, 64, 256, 65536
Term
temporal resolution
Definition
the frequency that a sensor can obtain repeat coverage of an area
Term
swathing pattern
Definition
pattern of how satellite crosses over an area
Term
red + green
Definition
yellow
Term
green + blue
Definition
cyan
Term
red + blue
Definition
magenta
Term
line vs. pixel
Definition
line is across pixel is down
Term
sun synchronised orbit
Definition
crosses equator at precisely same time every time
Term
landsat 1 and 2
Definition
4 bands
Term
ground systems
Definition
available to relay information in about 24 hrs from taken
Term
new features on Landsat 7
Definition
pancromatic band with 15 m resolution, on board full apeture, thermal IR channel with 60 m resolution
Term
thematic mapper
Definition
7 bands in landsat 4, 5,6,7
Term
landsat 7 repeat coverage interval
Definition
16 days
Term
SPOT Temporal and radiometric and spatial resolution
Definition
26 days, 8 bit, 20 m
Term
IKONOS temporal, radio, and spatial
Definition
11 days, 11 bit, 4m
Term
How many satellites for GPS, man made stars?
Definition
24 and ground stations
Term
3 components of GPS
Definition
satellite, ground station, reciever
Term
how many orbital planes are satellites in?
Definition
6
Term
how many ground stations?
Definition
5
Term
why two frequencies?
Definition
l1 and l2 l1 is civilian
Term
how work?
Definition
triangulation time
Term
formula to determin range
Definition
r= time delay * velocity
Term
how long does it take signal to reach ground?
Definition
6/100 s
Term
factors affecting accuracy (5)
Definition
selective availability, reciever type, atmosphere refract, path errors, clock errors,
Term
how does sa work?
Definition
offset satellite clocks turned off in 2000
Term
types of receivers
Definition
mulitchannel, code and carrier phases, swithcin vs. continuos tracking, downloadable
Term
how to correct errors
Definition
differential correction, differential GPS
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