GE
GE 161
161
Geometric
Geometric Geodesy
Geodesy
BS Geodetic Engineering
Department of Geodetic Engineering
College of Engineering
University of the Philippines
Diliman, Quezon City
ascaparas/06
GE 161 – Geometric Geodesy
Course
Course Orientation
Orientation
Lecture No. 1
Department of Geodetic Engineering
University of the Philippines
ascaparas/06
1
Course Details
Course number : GE 161
Course title : Geometric Geodesy
Prerequisite: ES 21 – Mathematical Methods in
Engineering
GE 12 – General Surveying II
MATH 20 – Euclidean Geometry
Course credit : 3 units
Course section : MHU
Class schedule : 4:00 – 5:30 p.m., MTh
Lecture 1 GE 161 – Geometric Geodesy
Course Introduction
Lecture No.1
Course Description
History and development of geodesy; geometry
of reference ellipsoid; coordinate systems;
computations for geodetic positions; geodetic
reference systems and datum
Lecture 1 GE 161 – Geometric Geodesy
Course Introduction
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Main References
Rapp, Richard R., Geometric Geodesy, Ohio State
University, Ohio State USA.
National Imagery and Mapping Agency
(NIMA), Geodesy for the Layman (online),
Department of Defense, USA.
Vanicek, P., An Online Tutorial on Geodesy
(online), University of Brunswick, Canada
Heiskanen and Moritz, Physical Geodesy, 1967
Leick, A., GPS Surveying 3rd Edition
Lecture 1 GE 161 – Geometric Geodesy
Course Introduction
Lecture No.1
Course Resources
Books
Virtual Class. A virtual class on the University Virtual
Class Environment (UVLE) at www.uvle.up.edu.ph will
be created for this course. Course notes and lecture
materials will be uploaded to this virtual class for the
students’ use. Announcements and submission of
assignments will also be facilitated in this virtual class.
Internet Websites.
Lecture 1 GE 161 – Geometric Geodesy
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Class Policies
1. Attendance
2. Long Examinations
3. Missed Long Exams
4. Quizzes and Assignments
5. Course Paper/project
6. Final Examination
7. Exemption on the Final Exam
Lecture 1 GE 161 – Geometric Geodesy
Course Introduction
Lecture No.1
Class Policies
8. Computation of Grade:
Pre-
Pre-final Grade:
Long Examination 65%
Course Paper/Project 20%
Quizzes and Assignments 15%
Final Grade:
Pre-
Pre-final Grade 70%
Final Examination 30%
9. Grading System
- university’
university’s standard scale
Lecture 1 GE 161 – Geometric Geodesy
Course Introduction
Lecture No.1
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Course
Course Introduction
Introduction
ascaparas/06
Lecture 1 GE 161 – Geometric Geodesy
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Why do we need to study
Geometric Geodesy?....
“Earth” Map
Lecture 1 GE 161 – Geometric Geodesy
Course Introduction
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What do we want as
Geodetic Engineers?…..
…..We want to know what is on the surface of the
earth and we do this through….
….MAPPING
….which can be done by…..
....SURVEYING
Lecture 1 GE 161 – Geometric Geodesy
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Surveying…
Plane Geodetic
Surveying Surveying
Considers the
curvature of the
earth…
earth…
…Needs knowledge
MAP in geodesy!!
Lecture 1 GE 161 – Geometric Geodesy
Course Introduction
Lecture No.1
So where’s geometric geodesy?...
In surveying, what we are doing is mapping a
certain “parcel of the surface of the earth”…
For us to “put together” these parcels of the
surface of the earth (like a jigsaw puzzle) and place
them on their correct positions to come up with a
meaningful representation…. that is a map….
We need to reference our surveys and position
them into to a common space… into an imaginary
model of the earth…
…Referencing and Reference Systems for mapping
purposes is the ultimate task of geometric geodesy
Lecture 1 GE 161 – Geometric Geodesy
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See the whole picture?!
mapping
SURVEY
Reference
“Earth” Model/System Map
A complex, dynamic, A discrete, measurable,
immeasurable “object”
object” understandable object
Lecture 1 GE 161 – Geometric Geodesy integration Course Introduction
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What is a Reference System then?!...
A reference system is a defined surface in
which we “refer” (position) all our
surveys or mapping activities.
Lecture 1 GE 161 – Geometric Geodesy
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What is a Reference System then?!...
topographic surface
where we do our surveys
The “Geoid”
Geoid”
equipotential surface where
we refer our leveling works
The Reference
Lecture 1
Lecture No.1
Surface (ellipsoid)
GE 161 – Geometric Geodesy
Course Introduction
So how do we make Reference
Systems?....
Clark, GRS, Geocentric or
earth WGS Geodetic
Choose or define a Define the origin
reference ellipsoid Establish control
network
Determine positions of
the control stations Define geoid
WGS84, Define the geoid-
geoid-
model
PRS92 ellipsoid separation
Lecture 1 GE 161 – Geometric Geodesy
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And what do we need?!....
1. Reference Ellipsoid
2. Coordinate Systems
3. Control Network
4. Geoid Model
5. Positions and
Positioning Methods
the core of Geodesy
Lecture 1 GE 161 – Geometric Geodesy
Course Introduction
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Contents of Geometric Geodesy
1. Reference Ellipsoids
2. Reduction of Measurements to the Ellipsoids
3. Determination of Geodetic Positions
4. Reference Systems and Datum
5. Datum Transformation
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