Chapter10 - Teoría de La Calibración de Sitios en GPS

7/26/2019 Chapter10 - Teora de La Calibracin de Sitios en GPS

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Chapter 10

Coordinate Systems andGPS Site Calibration Theory


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GPS Site Calibration

WGS84 NEE

Consists of a horizontal and/or vertical

adjstmentCan be sed to compte datm

transformations


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Calibration Process

!atm Transformation !efine Projection

"orizontal #djstment

Geoid $odel %optional& 'ertical #djstment


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!atm Transformation

WGS-84 Local

(sally pblished parameters

T)o basic types*

3 Parameter7 Parameter


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+ vs, - Parameter

+ Parameter

Small Scale Projects

- Parameter

.are Scale Projects

#reas 100 m2


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Calibration Process



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!efine Projection

Local NEE

$appin projections are sed to

represent positions on the crved srfaceof the earth as points on a flatsrface or

plane,


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Plane Coordinate Systems


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Types of Plane Systems

Plane

Ellipsoid

Tanent Plane.ocal Plane

Point of

3riin

4ntersectin CylinderTransverse $ercator

#5is of

Ellipsoid

Ellipsoid

#5is of

Cylinder

.ine of

intersection

#pe5 of

Cone

4ntersectin Cone

2 Parallel .ambert

#5is of Cone6 Ellipsoid

Ellipsoid


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Calibration Process



RotationTranslation

Scale


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#t least + horizontal control points are re7ired5 points are recommended

8 GPS observation8 Control Point


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9otation


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Translation


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Scale


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"orizontal 9esidals

9esid

al


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Calibration Process



Geoid $odel %optional&


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The Geoid

NN

N

e ee

h hh

Earth:s

Srfa

ce

Ellips

oid

Geoid

e 8 3rthometric "eihth 8 Ellipsoid "eiht

N 8 Geoid "eiht

e 8 h ; N


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The Geoid $odel

Geoid

e

# ridded srface that appro5imates the eoid

Some poplar eoid models*

EGM 96 Glo!al"

Geoid 99 #S$"

%ari!97 %ari!e"


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Calibration Process



Geoid $odel %optional& 'ertical #djstment


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'ertical #djstment

#t least < vertical control points are re7ired5 points are recommended

N

NN

e ee

" "

"

Earth

:sS

rface

Ellips

oid

Geoid


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'ertical #dj, %No Geoid $odel&

Earth:s Srface

" "

" ""

e

e

ee

e

NNNN

N

4nclined Plane

"

NE

NE8 estimated eoid heiht

eE

eE8 " ; NE

Ellipsoid

Geoid


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'ertical 9esidalsEarth:s Srface

""

" " "

eh

hh

h

NNNN

N

4nclined Plane

Ellipsoid

Geoid

N

Geoid

4nclinedPlan

e

9esidal


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'ertical #dj, %)ith Geoid $odel&

Earth:s Srface

""

" ""

e

e

e e e

NNNN

N

Geoid $odel

Ellipsoid

GeoidNmNm

NmNm Nm

Nm8 modeled eoid heiht


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$odelin Errors

Earth:s Srface

""

" ""

e

e

eh

h

NNNN

N

Geoid $odel

Ellipsoid

GeoidNmNm

NmNm Nm

Geoid$odel

Geoid

NNm

N


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4nclined Plane

NNNN

N

Geoid $odel

Ellipsoid

GeoidNmNm

NmNm Nm

4nclinedPlane

N=

;

9esidal


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'ertical #dj, %)ith Geoid $odel&

Earth:s Srface

""

" ""

e

e

e e e

NNNN

N

Geoid $odel

Ellipsoid

GeoidNm

NmNm

Nm Nm

N

"

Nm

NC8 Geoid $odel Correction

eE

eE8 " ; Nm; NC

4nclinedPlane


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Calibration Process >lo)chart


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Chapter10 - Teoría de La Calibración de Sitios en GPS

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