CE 411 Advanced Surveying And Geodesy

Credit Structure: (2-2)3

Catalog Description:
Horizontal and vertical geodetic control surveys including precise traverses, triangulation, trilateration, and leveling, introduction to adjustment computation, theory of probability and theory of errors. The principle of law of error propagation, kind of observations and the least square method. Introduction to adjustment techniques.

Course Objectives:
The primary objective of the course is to provide the student with theoretical and computational skills necessary for design and adjustment of precise horizontal control.

Prerequisites:
None

Textbook(s):
Torge, "Geodesy", de Gruyter Publications, 1987.

Reference(s):
Vaniek and Krakiwsky, "Geodesy: The Concepts", North olland Publications, 1987.
G. Bomford, "Geodesy", 5th Ed., Oxford University Press, 1986.
B. Hofmann-Wellenhof, H. Lichtenegger and J. Collins, "Global Positioning System, Theory and Practice", 3rd Ed., Springer Verlag, 1993.

Syllabus:
1. Gravitational and gravity potentials. Equipotential surfaces, geopotential numbers and geoid. Astronomical latitude, astronomical longitude and orthometric height.
2. Geometry of best fitting ellipsoid. First and second fundamental forms, principal curvature and ellipsoidal coordinate system.
3. Least squares adjustment. Indirect mathematical model, Linearization and observation equations. Statistical model, covariance law, concept of weight. Normal equations and their solutions. Assessment of results, confidence intervals and regions.
4. Precise leveling. Field operations, reductions and network adjustment.
5. Design of trilateration and traverse networks, simulation and covariance analysis. Observation, reduction and adjustment of terrestrial networks.
6. Introduction to GPS positioning. Pseudo-range and carrier phase observations. Tropospheric and ionospheric refraction, clock errors. Absolute and relative positioning using GSP.

Homeworks, Quizzes, Projects:
None

Computer Usage:
1. Iterative method of transformation between ellipsoidal ad geodetic Cartesian coordinates.

2. Computation of long lines on ellipsoid.

3. Adjustment computations (Students are required to develop their own software and also use the Dynap and Adjust packages).

Laboratory Work:
There will be three field projects, one on each of precise leveling, traverse and trilateration. Afield demonstration will be conducted on static GSP positioning using a pair of receivers supplied by the General Command of Mapping.

Category Content:
Mathematics and Basic Sciences: None
Engineering Design: 1.5 credits
Engineering Sciences: 1.5 credits
Humanities & Social Sciences: None
Departmental: None

Instructors:
S. Mete Nakiboglu