Course 357: GNSS Operation for Engineers and Technical Professionals

Courses included in 357:
Course 357A: (Day 1) Fundamentals of GNSS
Course 357B: (Days 2-3) GNSS Signals and Receiver Operations
Course 357C: (Days 4-5) Galileo Design, Development & Signal Processing

July 6-10, 2009

Online registration <<

*NEW for 2009* Electronic Course Materials! All course materials this year will be provided in a more portable, secure electronic PDF format. We've heard your requests to lighten the weight of travel home by eliminating heavy, spiral bound paper notebooks. We want to provide a more dynamic & beneficial experience for all tutorial/course attendees. On-the-fly notations can be typed during your class using the "Sticky Note" feature of Acrobat Reader 9 (provided for your convenience). A laptop is required. Take your notes To-Go and have them wherever you go. Thank you to all attendees for your continued support and feedback over the past 25 years!
Instructors	Dr. Chris Hegarty, Mitre Dr. Thomas Burger, ESA/ESTEC Dr. Martin Hollreiser, ESA/ESTEC
Objectives	• To give a comprehensive introduction to GPS and DGPS technology, system concepts, design, operation, implementation and applications. • To provide detailed information on the GPS signal, its processing by the receiver, and the techniques by which GPS obtains position, velocity and time. • To present current information on the status, plans, schedule and capabilities for GPS, as well as for other satellite-based systems with position determination applications. • To fill in technical information gaps for those working in GPS.
Prerequisites	Familiarity with engineering terms and analysis techniques. General familiarity with matrix operations is desirable for Thursday and Friday, and familiarity with signal processing techniques is desirable for Wednesday through Friday.
Who Should Attend?	Excellent for engineering staff who need to be rapidly brought up to speed on GPS, and for those already working in GPS who need exposure to the system as a whole, in order to work more effectively.
Course Schedule	DAY 1 - Course 357A Dr. Chris Hegarty, MITRE
	9:00 - GPS System Description, Applications and Status Receivers & boards: technology and services GPS characteristics, capabilities Nav technique; 4-satellite ranging System segments, interdependence GPS configuration; JPO, functions 10:15 - GPS Performance and Policy Accuracy, avail., integrity, SPS, PPS DoD & DoT policy, Anti-Spoof (A-S), system status, applications GPS Space Segment; How sats *and orbit data affect system op’s.* Orbital parameters, Kepler’s laws; ephemeris data Block I, II, IIA, IIR, IIR-M, IIF, III features 11:30 - GPS Constellation; Coverage and Performance; How satellite *geometry affects rcvr performance* Dilution of precision (DOP), visibility, analysis methods GPS Operational Control Segment (OCS); How OCS *uploads & monitors the GPS constellation* OCS network, functions, operation,vulnerabilities 12:30 - Lunch on your own 2:00 - GPS System Concept and Operation Position determination techniques; pseudoranging Signal structure, modulation, spectrum Pseudorandom noise (PRN) codes, C/A, P(Y) codes GPS data message, format, data transmitted by S/C Correlation processing; signal acquisition; power levels, signal policy, pseudoranging Navigation solution; velocity solution 3:15 - Error Sources & Receiver Effects Systematic and random errors, tropospheric effects, dispersion Ionospheric propagation effects AFGD ionospheric model;2-frequency correction Multipath, mitigation techniques; error budgets; SPS and PPS signals 4:30 - Introduction to DGPS Precision relative measurements Differential operation, common bias terms GPS Receivers, Architectures and Equipment Receiver config's; types & performance Receiver block diagrams; carrier and code tracking loops Carrier smoothing, aiding Receiver sequence of operation 5:30 - Day 1 (Course 357A) Ends
	DAY 2 - Course 357B Dr. Chris Hegarty, MITRE
	9:00 - GPS Modernization Perspective GPS operation modes, performance Need for improvements; objectives; military/civil Additional signals; carriers, codes Accuracy improvements, power, availability, integrity Perf. improvements for 2004-2010+ Galileo relationship; institutional policy, plans, projections 10:15 - DGPS Concepts Local-area, regional-area, wide-area architectures Code vs. carrier phase based systems Error sources Data links; Pseudolites Performance overview 11:30 - DGPS Examples RTCM SC104 message format USCG maritime DGPS and National DGPS (NDGPS) Commercial satellite-based systems SBAS RINEX format CORS/IGS Precise time transfer 12:30 - Lunch on your own 2:00 - GPS Signal Structure and Message Content Signal structures Signal properties Navigation message 3:15 - GPS Receiver Overview Functional overview Synchronization concepts Acquisition Code tracking Carrier tracking Data demodulation noise and bias 4:30 - GPS Antennas Antenna types Antenna performance characteristics Prefilters Low Noise Amplifiers (LNAs) Noise figure 5:30 - Day 2 ends
	DAY 3 Dr. Hegarty
	9:00 - GPS Signal Processing In-phase and quadra-phase signal paths Analog-to-digital (A/D) conversion Automatic Gain Control (AGC) Correlation channels Acquisition strategies 10:15 - Code Tracking, Carrier Tracking and Data Demodulation Delay locked loop (DLL) implementations; performance Frequency locked loops (FLLs) Phase locked loops (PLLs) Carrier-aiding of DLLs Data demodulation 11:30 - Receiver Performance Considerations and Enhancements Bandlimiting of received signal Oscillators; Multipath; Interference Codeless and semi-codeless tracking Narrow correlator spacing Gated and strobe correlators Vector tracking; external aiding 12:30 - Lunch on your own 2:00 - GPS Navigation Algorithms-Point Solutions Pseudorange measurement models Point solution method and example 3:15 - Basics of Kalman Filtering Introduction to Kalman Filtering Filter structure Simulation results 4:30 - Kalman Filtering for GPS Navigation Clock models and dynamic models Integration with INS Measurement and dynamic mismodeling 5:30 - Day 3 (Course 357B) Ends
	DAY 4 - Course 357C Dr. Thomas Burger and Dr. Martin Hollreiser, ESA/ESTEC
	9:00 - GALILEO Services and Overall System Architecture > Duration 1 hour < Navigation Services definition and performance Search and Rescue Service Signal-in-space definition High level architecture Development and validation approach Galileo system test bed 10:15 - GALILEO Space Segment and Launchers > Duration 1 hour < Satellite Design Payload Design Launchers 11:30 - GALILEO Ground Segment I and II > Duration 2 hours with lunch break < Ground Control Segment Ground Mission Segment Navigation and Integrity Control Galileo Control Centres Remote sites and their distribution 12:30 - Lunch on your own 2:00 - GALILEO Ground Segment I and II > Continued < 3:15 - GALILEO Signal In Space Definition > Duration 2 hours with 15 minute break < Recall: frequency plan and signal baseline overview Pre-requisites Galileo signal choices Message types Spreading code design Future MBOC signal Signal interoperability with GPS GIOVE-A and B signal in space Signal experimentation results 5:30 - Day 4 ends
	DAY 5 Dr. Thomas Burger and Dr. Martin Hollreiser, ESA/ESTEC
	9:00 – GALILEO Navigation and Timing Performance > Duration 1 hour < Orbit determination and time synchronisation Galileo system time and steering to UTC/TAI Timing and reference frame interoperability with GPS 10:15 - GALILEO Integrity Concept and Performance > Duration 1 hour < Integrity Performance Different integrity levels: Level A, Level B and Level C Integrity service for Galileo using SBAS-like equations 11:30 - GALILEO Figures of Merit Simulations > Duration 1 hour < Galileo open service simulations: single/dual frequency accuracy Galileo accuracy vs GPS Accuracy Galileo safety-of-life service simulations: integrity and continuity 12:30 - Lunch on your own 2:00 – GALILEO User Receiver I, II and III > Duration 3 hours with 15 minute breaks < Overview test user segment & ground receiver chain Main features and drivers Receiver signal processing Receiver navigation & integrity processing Analysis subsystem GIOVE-A and B receivers experimentation results 5:30 - Course 357C and 357 end
Materials You Will Keep	• A CD-ROM with PDF electronic course notes used during the course. Bringing a laptop is highly recommended; power access will be provided. Course 357: • A copy of the following text: Understanding GPS: Principles and Applications, 2nd Edition by Elliott Kaplan and Chris Hegarty, Artech House Inc., 2005. • NavtechGPS CD-ROM containing a variety of GNSS references. Course 357A+B: • A copy of the following text: Introduction to GPS - The Global Positioning System 2nd Edition by Ahmed El-Rabbany, Artech House Inc., 2006. • NavtechGPS CD-ROM containing a variety of GNSS references. Course 357C: • A copy of the following text: Galileo: Europe's Guiding Star, Faircount Ltd., 2005.
Continuing Education Units	Course 357: 3.0 (30 hours) Course 357A: 0.6 (6 hours) Course 357B: 1.2 (12 hours) Course 357C: 1.2 (12 hours)