FINAL GISP SET: ALL KSAs (2022/2023) (Verified Solutions)

FINAL GISP SET: ALL KSAs (2022/2023) (Verified Solutions) Federal Geographic Data Committee (FGDC) A United States government committee which promotes the coordinated development, use, sharing, and dissemination of geospatial data on a national basis. ISO 19115-2 Content standard that adds elements to describe imagery and gridded data as well as data collected using instruments (monitoring stations and measurement devices) Quality control This is product-oriented and focuses on defect identification - finding and eliminating sources of quality problems. Archiving Captures, manages and analyzes data changes (most often done with databases) Geomatics The science and technology of gathering, analyzing, interpreting, distributing, and using geographic information (includes surveying, mapping, remote sensing, GIS, GPS). Merge Combines multiple input datasets of the same data type into a single new output Clip Extracts input features that overlay the clip features (keeps the input's attributes) Intersect Extracts features which overlap in all layers to a new feature class (joins the attribute tables) Ground surveying Based on the principle that the 3D location of any point can be determined by measuring angles and distances from other know points Disadvantages of ground surveying Expensive and time consuming GPS receiver Receives signals from GPS satellites to calculate the current position and time. Four satellites must be in view for it to compute four unknown quantities (three position coordinates and clock deviation from satellite time) Field collection process 1. Determine the result of the field work 2. Determine what needs to be collected, inspected or surveyed (Set up a field collection form/data dictionary) 3. Determine how it will be collected (Pen and paper, mobile tablet, Trimble unit, drone) 4. Begin field collection on a good representation of the entire dataset 5. Review sample field collection and adjust the data being collected or the method of collection 6. Plan locations and timing for field work 7. Conduct field collection for all assets. Geoid The shape that the surface of the oceans would take under the influence of the Earth's gravitation and rotation alone in the absence of other influences such as winds and tides. It is a model of global mean sea level that is used to measure precise surface elevations by registering the ocean's water level at coastal places using tide gauges. The radius at the equator is larger than at the poles due to the long term effects of the earth's rotation. Mountains have more mass than valleys, thus the pull of gravity is regionally stronger near mountains. Reference ellipsoid This is a mathematically defined surface that appr