Survey Planning and GNSS Surveying
The first GNSS system which is still currently operated by the US Department of Defense
GPS
To calculate an accurate and unique GNSS position, the receiver must employ solutions from ___________ space vehicles.
4
Spatial data files must contain
Location Reference
A mathematical model of the earth’s gravitational field used to estimate mean sea level.
Geoid
A GNSS System operated and maintained by the European Union
Galileo
The largest component of the current GPS error budget is typically
Ionosphere
Elevation is defined as the
Height above the geoid
when using an articulated motor grader to finish steep slopes, use_____.
crab streering
To receive RTK GNSS data the receiver uses the ________ phase to determine the time difference between when the signal was sent from the satellite and when it was received by the antenna.
Carrier
Images in GIS are considered to be ________ Data.
Raster
when laying out a site plan, which of the following is used by a visual reference within the site?
Geospatial information system
One such planning tool that allows you to predict satellite location (direction and elevation) relative to your position would be the ______________.
Sky Plot
a telescoping excavator makes a good trimming machine because___.
its bucket or grading blade can be worked back and forth in scraping motion
What ArcPro file type contain all data entered in the project and are a “standalone” document to retrieve the project
Map Package
Autonomous GPS horizontal position data are determined relative to the ________ datum
WGS 84
How often does a laser leveling system on a dozer check for proper elevation?
Continuously
what is one the primary items scraper operators should check before they start trimming?
tire pressure
what is a primary benefit of using GPS- controlled devices to regulate the blade height on a dozer
Blade height is being monitored continuously
The North Carolina State Plane Coordinate System is defined based on the __________ as the standard unit of measure
Meter