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8:30 -
12:00, Tuesday, String 3
340A: GNSS Kinematic Positioning Methods I
Register
for this tutorial ~
Back to main tutorials page |
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GNSS positioning allows users to
achieve accuracies to the centimeter level very effectively. This first
half-day addresses the principles and system limitations. |
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Dr.
Gιrard Lachapelle & Dr.
Mark Petovello
University
of Calgary |
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GPS Observation Equations
Code measurements
Carrier-phase measurements
Definition of integer ambiguity
Instantaneous Doppler measurements
Linear phase combinations
Ionospheric modeling
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Errors and Biases
Signal degradation overview
Space vehicle (SV) clock errors and orbital biases
Atmospheric propagation errors
Code and carrier-phase multipath
Cycle slip detection and corrections
Antenna phase center variations
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Differential Techniques to Reduce Biases and
Errors
Single-difference DGPS
Double-difference DGPS
Carrier-phase based DGPS float vs. fixed integer systems
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Level:
A good knowledge of the GPS operation is assumed, as well as familiarity
with engineering analysis methods.
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1:30
- 5:00, Tuesday, String 3
340B:
GNSS Kinematic Positioning Methods II
Register
for this tutorial ~
Back to main tutorials page |
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This second
half-day OTF (On-The-Fly) carrier phase ambiguity resolution techniques,
emerging multi-frequency methods and multiple-reference station methods. |
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Dr.
Lachapelle & Dr.
Petovello |
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OTF Carrier Phase Ambiguity Resolution
Definition of the ambiguity search space
Reduction of search space through decorrelation
Testing of integer ambiguities
Selection of integer ambiguity combination
Validation of selected ambiguities
Role of external sensors in ambiguity resolution
Assessing the probability of correct fix |
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Emerging Multi-Frequency Methods
Triple frequency methods
GPS-Galileo approaches
Simulation designs and results
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Multi-Reference Station DGPS
Regional area carrier phase networks
Multi-reference station carrier-phase based RTK
Virtual Reference Station (VRS) concept
Case studies
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Level:
A good knowledge of the GPS operation is assumed, as well as familiarity
with engineering analysis methods. |
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