IAAO 601 QUESTIONS AND ACCURATE ANSWERS
Flight inconsistencies - Answers - Drift, tilt, crab
Drift - Answers - Wind pushes aircraft off intentional flight path
Crab - Answers - Horizontal displacement of photo from flight line axis
X-tilt - Answers - Aircraft rolls on X axis causing wings to tilt away from being parallel to
earth
Y-tilt - Answers - Aircraft pitches on Y axis causing nose to incline up or down
Digital Elevation Model - Answers - Surface model that accurately depicts the shape &
form of the earth's surface
What is LiDAR and what is it used for? - Answers - Technology used to create DEM for
large scale, high accuracy mapping
LiDAR uses ___, ____ and ______ - Answers - Laser sensor, GPS, INS
Softcopy orthophotography - Answers - Software that orients each pixel od imagery to
its XYZ positins on DEM (a scalable map)
Bearing - Answers - Angle between line of reference (N/S) amd line measured toward
E/W; less than 90
2 fundamental methods of Identifying land area or interests in land - Answers -
Geographic representation, written description
geographic representation - Answers - Refers to recorded survey lot #
Written description - Answers - SE 1/4 of SE 1/2 of section B...
Cadastre - Answers - Official register of quantity, value and ownership of real estate
used in apportioning real property taxes for a county
Topographic Survey - Answers - Determines locations of natural and artificial features
and elevations recorded on a map
2D portrayal of a 3D world - Answers - Topographic survey
Contour - Answers - Line connecting points of equal elevation
Flight inconsistencies - Answers - Drift, tilt, crab
Drift - Answers - Wind pushes aircraft off intentional flight path
Crab - Answers - Horizontal displacement of photo from flight line axis
X-tilt - Answers - Aircraft rolls on X axis causing wings to tilt away from being parallel to
earth
Y-tilt - Answers - Aircraft pitches on Y axis causing nose to incline up or down
Digital Elevation Model - Answers - Surface model that accurately depicts the shape &
form of the earth's surface
What is LiDAR and what is it used for? - Answers - Technology used to create DEM for
large scale, high accuracy mapping
LiDAR uses ___, ____ and ______ - Answers - Laser sensor, GPS, INS
Softcopy orthophotography - Answers - Software that orients each pixel od imagery to
its XYZ positins on DEM (a scalable map)
Bearing - Answers - Angle between line of reference (N/S) amd line measured toward
E/W; less than 90
2 fundamental methods of Identifying land area or interests in land - Answers -
Geographic representation, written description
geographic representation - Answers - Refers to recorded survey lot #
Written description - Answers - SE 1/4 of SE 1/2 of section B...
Cadastre - Answers - Official register of quantity, value and ownership of real estate
used in apportioning real property taxes for a county
Topographic Survey - Answers - Determines locations of natural and artificial features
and elevations recorded on a map
2D portrayal of a 3D world - Answers - Topographic survey
Contour - Answers - Line connecting points of equal elevation
