Fundamentals

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created 3 years ago by Sergio_Eric_Valencia
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1

3 most common developable surfaces?

con, planar, cylinder, pyramid

2

UTM

universal transverse mercator

3

what is a geoid?

a hypothetical shape of the earth

4

PLSS

public land survey system

(a chunk of the earth that has been surveyed)

5

WGS

world geodetic system

6

what is a WGS?

a standard spheroid reference surface for raw altitude and has nominal sea level

7

NAD

North America Datum

8

sexagesimal

relating to the number sixty

9

GPS

Global Positioning System

10

GNSS

global navigational satellite system

11

DOP

dilatation of precision

12

How many satellites for a 3D fix?

a min of 3 but 4 is best

13

SPC

State Plane Coordinate

14

False Origin

selecting a point on the map where measurements will be based from the original origin of the map (used in UTM and state plane)

15

why case an oblique conic projection?

to minimize distortion of going from East to West

16

Three different North's?

True North = 0'degrees

Grid North = 0.6' degrees

Magnetic North = 13.5'degrees

17

Geodestic

the shortest path on a curved area

18

Raster

pixels

19

vector

points, lines, polygons

20

TIN

triangular irregular network