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8:30
- 12:00, Monday, String 1
110A:
Fundamentals of GPS I
Back to main tutorials page |
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This course is
for technical and scientific professionals and managers who would
like an in-depth perspective on the GPS system, its performance and
operation. The course is also for those entering the field and
specialists desiring a broad view of GPS developments. |
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Mr.
Keith McDonald
NavtechGPS |
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GPS System Overview
• System description, technology, development & evolution
• GPS characteristics, capabilities, requirements & performance
• GPS navigation technique; determination of position, velocity,
time
• System segments, operation, interdependence; information flow
• GPS configuration, operating modes, civil/military applications |
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GPS Performance and Policy
• Accuracy, availability, integrity; SPS & PPS operations
• DoD and DoT policy, system status, plans and applications
GPS Space Segment:
How satellites and orbit data affect system operation
• Orbits & orbital characteristics, Kepler’s laws; ephemeris
elements, GPS spacecraft: Generations or "Blocks" of
spacecrafts, features, status,
plans |
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GPS Constellation, Coverage & Performance:
How satellite geometry affects receiver performance
• GDOP, visibility, mask angle, constellation performance analysis
GPS Operational Control Segment (OCS):
How OCS uploads and monitors the GPS constellation of spacecraft
• Operational Control System: functions, operation, performance &
vulnerabilities
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Level:
An understanding of
basic engineering terms and concepts is desirable, but not
mandatory. Non-technical attendees will gain an understanding of the
overall system. Most attendees proceed to 110B. |
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1:30
- 5:00, Monday, String 1
110B:
Fundamentals of GPS II
Back to main tutorials page |
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For those
engineers and technical professionals who need exposure to the
various facets of GPS, in preparation for further study. |
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Mr.
McDonald |
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GPS System Concept & Operation
• Position determination techniques; pseudoranging; ephemeris data
• Signal structure, modulation, power spectrum, noise levels
• Pseudorandom noise (PRN) codes, C/A, P(Y)-codes (and others)
• Code processing; correlation, correlators; data message and
content • GPS navigation (position, time) solution; velocity, clock
drift solution • Signal acquisition; techniques, TTFF, power levels,
signal policy |
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Error Sources and Effects on Receivers
• Systematic and random errors, tropospheric propagation & models
• Ionospheric effects; diurnal, seasonal & solar cycle dependence
• AFGD ionospheric model, single frequency correction, other methods
• Two-frequency (L1, L2 or L5) correction for iono delays,
performance • Ionospheric delay; decorrelation, scintillation,
regions affected
• Multipath effects; code rate dependence, mitigation techniques
• Error budgets, performance effects, representative SPS, PPS
accuracies and implementations |
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Introduction
to Differential GPS (DGPS)
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Precision relative measurement techniques; common bias error
reduction
GPS
Receiver Architectures and Equipment
• Receiver
block diagrams; carrier and code acquisition, tracking loops
• Analog and digital configurations; accuracy trends, factors
• Carrier smoothing, aiding; noise levels; receiver operating
sequence
• Test results, stand alone & differential performance: SPS & PPS
receivers, capabilities and typical operational equipment
• Future plans, signal and system improvements and concerns
• Summary of course; Q and A Session |
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Level:
An
understanding of basic engineering terms and concepts is desirable
but not mandatory. Non-technical attendees will gain an
understanding of the overall system. |
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