Geodesy with the Global Positioning System
EESC G9945 Section 2
Spring Term 2013
Jim Davis & Meredith Nettles
Wednesdays, 3:15 PM-4:30 PM, SGT Conference Room
Course Outline
Week 1
Introduction: Overview of class; discussion of class project; introduction to the Global Positioning System; brief history; space segment; ground segment; user segment.
[
notes]
Week 2
Principles of satellite positioning: Description of satellite orbits; transformation to Cartesian satellite coordinates in Earth-centered system; RINEX orbit files.
[
notes]
Week 3
GPS constellation: Properties of GPS signals; signal codes, carrier frequencies, on-board frequency standard and clock. [
notes]
Week 4
GPS observables: Pseudorange observables; carrier-beat phase observables. [
notes]
Week 5
Delay of the GPS signal by the atmosphere: Ionosphere-free observables; radio refractivity of the neutral atmosphere; hydrostatic and wet zenith delays; mapping function. [
notes]
Week 6
Point positioning using pseudorange: Pseudorange model and code solutions; RINEX data files. [
notes]
Week 7
Relative positioning using carrier-beat phase (I): Phase model; phase ambiguity; preprocessing; single, double, and triple-difference observables. [
notes]
Week 8
Relative positioning using carrier-beat phase (II): Regional solutions using fixed orbits; orbit integration and orbit parameter estimation. [
notes]
Week 9
Terrestrial reference frames: Definition; how GPS is impacted; determination of terrestrial reference frames. [
notes]
Week 10
Positioning using stochastic filtering (I): Iterative least squares; stochastic parameters. [
notes]
Week 11
Positioning using stochastic filtering (II): Parameter estimation using the Kalman filter. [
notes]
Week 12
GPS errors: Multipath; atmosphere; ionosphere; transmitting and receiving antennas [
notes]
Image: Seth Gutman, NOAA