ECE 4164
Lecture Set 4:
Precise Satellite Position Calculation
Correction of Kepler Orbits
First consider important physical effects that
perturb GPS satellite orbits
Determine actual perturbations
ECE 4164
Lecture Set 11:
GPS Communication Link Concepts:
Theory and Applications
GPS Communication Link
This discussion will provide a description of the GPS
communication link (particularly loss me
ECE 4164
Lecture Set 2:
Coordinate and Time Systems
Role of Coordinate Systems
Basic GPS satellite position calculation
GPS satellite
ephemeris data sent
from satellites
Determination of
satellite p
ECE 4164
Lecture Set 3:
Coarse Satellite Position Calculation
Basic GPS satellite position calculation
Space Segment
User Segment
Satellite ephemeris data sent from satellites
Coarse positioning req
ECE 4164: QUIZ 1, October 5, 2016
NAME:_SIGNATURE:_
Instructions: Answer the following 8 questions by clearly circling the correct answer.
NOTE: For a spherical earth assume rE = 6371 km.
1. Assume a
ECE 4164
Lecture Set 1:
Basic GPS Radio Navigation Concepts
GPS Milestones
1960s: TRANSIT, 6 satellites, used to determine locations of
aircraft and ships for the military. Problems: limited availabil
ECE 4164
Lecture Set 6:
The Navigation Solution
Two Types of Navigation Solutions
1. Code Range (use Pseudorange equation)
-most common type used in commercial receivers
-uses Pseudoranges and Pseudor
ECE 4164
Lecture Set 10:
Differential GPS
Need for Differential GPS (DGPS)
Many applications require sub-meter ( under 10 cm) accuracy. DGPS
provides such accuracy and was initially developed to elim
ECE 4164
Lecture Set 5:
GPS Observables
Three GPS Observables
1. Pseudorange (meters)
2. Doppler Frequency (Hz)
3. Integrated Carrier Phase (Cycles)
These three observables are used along with satelli