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11 Cards in this Set
- Front
- Back
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When describing your position (on the surface of the earth), how many dimensions are you in when asking..."How far down the road am I?"
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1 Dimension
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When describing your position (on the surface of the earth), how many dimensions are you in when asking..."What is my current position in a projected coordinate system?"
What are two examples? |
2 Dimensions
Universal Transverse Mercator (UTM) State Plane |
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When describing your position (on the surface of the earth), how many dimensions are you in when asking..."What is my latitude and longitude?"
What is the third unstated dimension? |
3 Dimensions
The radius of the earth is the third, unstated dimension |
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Specifying your position in a 1-D space, position is stated with respect to a point of beginning and the distance is from an origin along a ray.
What might be implemented to represent this? |
Mile post markers along a road
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In a 2-D space, position is stated with respect to a ______ __ ___________.
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Point of Beginning
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In a 2-D space, Distance is measured ____ and ____ of the point of beginning.
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East and North
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In a 3-D space, latitude and longitude is measured. The Position in latitude is stated with respect to a vertical plane. What is this plane called?
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The Plane of the Equator
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In a 3-D space, latitude and longitude is measured. The position in longitude is stated with respect to a horizontal reference plane. What is this plane called?
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The Plane of the Prime Meridian
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3-D Cartesian coordinates are positioned in X, Y, and Z with respect to an origin. What is 3-D Cartesian coordinates useful for? What is an example?
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They are useful for recording terrain elevations
Digital Elevation Model (DEM) |
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What is dead reckoning? How is it done?
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It's a quick way to get an approximate location.
Given a previous position, your speed, direction, and time of travel, you can calculate a new position. The resulting location is an estimate of your real position (as determined by celestial or electronic means) |
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The GPS consists of a constellation of how many satellites orbiting the earth?
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24
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