RNR 2102 Exam 2 Questions With Correct
Answers 100% Guaranteed Pass.
In what case is the 100% tree tally appropriate? - Answer✔when the stand is very valuable
GIS - Answer✔geographic information system
GPS - Answer✔Global positioning system
PDOP - Answer✔positional dilution of precision
NAD27 - Answer✔north american datum of 1927
NAD83 - Answer✔north american datum of 1983
WGS84 - Answer✔world geodetic system of 1984
UTM - Answer✔universal transverse mercator
DEM - Answer✔digital elevation models
DOQQ - Answer✔digital orthophoto quarter quadrangles
SA - Answer✔selective availability
T/F
GIS is a computerized system for making maps - Answer✔false; computer based system to store,
manipulate, and output geographical data
GIS is a tool for storing maps and pictures - Answer✔false
GIS is a computer-based system to store, manipulate, and output geographical data -
Answer✔true
GPS units used by the military have higher PDOP than normal GPS units - Answer✔false; lower
GPS works better during the day, when the clouds help improve the signals - Answer✔false; no
clouds for good signal
GPS cannot work at all in the forest, even if the canopy is sparse - Answer✔false; can work
under canopy/ inaccurate
1|Page
, the signals we obtain with normal GPS today contain random error introduced by the military -
Answer✔false; no longer contain random error from military
post-processing requires a special kind of GPS called deferential GPS - Answer✔false; requires
known location for adjustment
measurements of cartesian coordinated are in meters - Answer✔true
measurements of geographic coordinates are in degree - Answer✔true
DOQQs are digital arial photographs - Answer✔true
a raster model consists of pixels and therefore can require a large amount of storage -
Answer✔true
a vector model consists of objects (points, lines, and polygons) that take up less storage -
Answer✔true
metadata are a huge database that consists of both vector and raster models - Answer✔false
selective availability allows the GPS user to selves the proper frequency (L1 or L2) -
Answer✔false; SA= permission to have GPS without error
what is GPS? explain the basis of GPS and how it works. - Answer✔1.created by department of
defense,
2. uses a constellation 30 satellites,
3.positioned about 20,200km above earth,
4. complete orbit every 12 hours,
5. maximum accuracy is 1 cm,
6. need 4 to 7 for a reading
what are measurement offsets? - Answer✔measure distance and direction from a known location
to an object of interest
what range should you ideally attempt to maintain PDOP within? - Answer✔1 to 6, but the lower
the PDOP the more accurate
the process of first collecting GPS data in the field and later applying corrections to those data is
often termed ________________ - Answer✔post processing
what is selective availability? - Answer✔only those who get permission can know the exact
location and use selective availability; no longer in use
what is multi path error? - Answer✔signals reflecting off obstruction before reaching GPS;
unable to correct
2|Page
Answers 100% Guaranteed Pass.
In what case is the 100% tree tally appropriate? - Answer✔when the stand is very valuable
GIS - Answer✔geographic information system
GPS - Answer✔Global positioning system
PDOP - Answer✔positional dilution of precision
NAD27 - Answer✔north american datum of 1927
NAD83 - Answer✔north american datum of 1983
WGS84 - Answer✔world geodetic system of 1984
UTM - Answer✔universal transverse mercator
DEM - Answer✔digital elevation models
DOQQ - Answer✔digital orthophoto quarter quadrangles
SA - Answer✔selective availability
T/F
GIS is a computerized system for making maps - Answer✔false; computer based system to store,
manipulate, and output geographical data
GIS is a tool for storing maps and pictures - Answer✔false
GIS is a computer-based system to store, manipulate, and output geographical data -
Answer✔true
GPS units used by the military have higher PDOP than normal GPS units - Answer✔false; lower
GPS works better during the day, when the clouds help improve the signals - Answer✔false; no
clouds for good signal
GPS cannot work at all in the forest, even if the canopy is sparse - Answer✔false; can work
under canopy/ inaccurate
1|Page
, the signals we obtain with normal GPS today contain random error introduced by the military -
Answer✔false; no longer contain random error from military
post-processing requires a special kind of GPS called deferential GPS - Answer✔false; requires
known location for adjustment
measurements of cartesian coordinated are in meters - Answer✔true
measurements of geographic coordinates are in degree - Answer✔true
DOQQs are digital arial photographs - Answer✔true
a raster model consists of pixels and therefore can require a large amount of storage -
Answer✔true
a vector model consists of objects (points, lines, and polygons) that take up less storage -
Answer✔true
metadata are a huge database that consists of both vector and raster models - Answer✔false
selective availability allows the GPS user to selves the proper frequency (L1 or L2) -
Answer✔false; SA= permission to have GPS without error
what is GPS? explain the basis of GPS and how it works. - Answer✔1.created by department of
defense,
2. uses a constellation 30 satellites,
3.positioned about 20,200km above earth,
4. complete orbit every 12 hours,
5. maximum accuracy is 1 cm,
6. need 4 to 7 for a reading
what are measurement offsets? - Answer✔measure distance and direction from a known location
to an object of interest
what range should you ideally attempt to maintain PDOP within? - Answer✔1 to 6, but the lower
the PDOP the more accurate
the process of first collecting GPS data in the field and later applying corrections to those data is
often termed ________________ - Answer✔post processing
what is selective availability? - Answer✔only those who get permission can know the exact
location and use selective availability; no longer in use
what is multi path error? - Answer✔signals reflecting off obstruction before reaching GPS;
unable to correct
2|Page
