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GPS/GNSS and DGPS Operation for Engineers & Technical Professionals

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GPS/GNSS and DGPS Operation for Engineers & Technical Professionals PRIVATE GROUP REMOTE COURSE ONLY Couses 356: GPS/GNSS and DGPS Operation for Engineers & Technical Professionals: Principles, Technology, Applications and DGPS Concepts (3.0 CEUs) (Similar to Course 346, but with three additional hours of Differential GPS and two additional hours of Kalman filtering.) DAY 1 DAY 2 DAY 3 DAY 4 DAY 5 Dr. Chris Hegaty, MITRE Fundamentals of GPS operation. GPS Principles and Technologies Differential GPS Overview GPS Signal Structure and Case Study: Tracing a GPS Overview of how the system works. ● Local-area, regional-area, Message Content Signal Through a Receiver U.S. policy and current status. Clocks and Timing wide-area architectures ● Signal structures ● Received signal ● Importance for GPS ● Code vs. carrier-phase ● Signal properties ● Digitized signal GPS System Description ● Timescales based systems ● Navigation message ● Correlator outputs ● Overview and terminology ● Clock types ● Pseudolites ● Code-phase estimate ● Principles of operation ● Stability measures ● Performance overview GPS Receiver Overview ● Carrier-phase estimate ● Augmentations ● Relativistic effects ● Functional overview ● Data demodulation ● Trilateration Differential Error Sources ● Synchronization concepts ● Performance overview Geodesy and Satellite Orbits ● Satellite ephemeris errors ● Acquisition GPS Navigation Algorithms: ● Modernization ● Coordinate frames and geodesy ● Satellite clock errors ● Code tracking Point Solutions ● Satellite orbits ● Selective availability ● Carrier tracking ● Pseudorange measurement GPS Policy and Context ● GPS constellation ● Ionospheric, tropospheric ● Data demodulation models ● Condensed navigation system ● Constellation maintenance delay ● Point solution method history ● Multipath GPS Antennas and example ● GPS policy and governance Satellites and Control Segment ● Receiver internal noise, ● Antenna types ● Modernization program ● GPS satellite blocks biases ● Antenna performance Basics of Kalman Filtering ● Ground segment ● Control segment components and characteristics ● Introduction to Kalman filtering ● Other satellite navigation systems operation Observable Modeling ● Prefilters ● Filter structure ● Monitor stations, MCS, and ground ● Code pseudorange and ● Low-noise amplifiers (LNAs) ● Simulation results GPS Applications antennas carrier-phase outputs ● Noise figure ● Land ● Upload operations ● Code-minus-carrier ● Marine ● Ground control modernization observables ● Aviation ● Carrier-smoothed code ● Science operation ● Personal navigation ● Double difference operation ● Accuracy measures ● System error budgets ● Error sources Lunch is On Your Own Legacy GPS Signals Error Sources and Models Differential GPS Design GPS Signal Processing Kalman Filtering for GPS ● Signal structure and characteristics ● Sources of error and correction Considerations ● In-phase and quadra-phase Navigation ● Modulations: BPSK, DSSS, BOC models ● Range vs. navigation domain signal paths ● Clock models and dynamic ● Signal generation ● GPS signals in space performance corrections ● Analog-to-digital (A/D) models ● Navigation data ● Ionospheric and tropospheric effects ● Data links conversion ● Integration with INS ● Multipath ● Pseudolites ● Automatic gain control (AGC) ● Measurement and dynamic Measurements and Positioning ● Error budget ● Reducing major error ● Correlation channels mismodeling ● Pseudorange and carrier phase components ● Acquisition strategies measurements Augmentations and Other ● Ambiguity resolution Practical Aspects I ● Least squares solution Constellations Code Tracking, Carrier Tracking ● Types of GPS and DGPS ● Dilution of precision ● Augmentations: local-area, satellite- DGPS Case Studies I & Data Demodulation receivers ● Types of positioning solutions based, and regional ● RTCM SC104 message ● Delay locked loop (DLL) imple- ● Understanding specification ● Russia’s GLONASS format mentations; performance sheets GPS Receiver Basics ● Europe’s Galileo ● USCG maritime DGPS and ● Frequency locked loops (FLLs) ● Data links ● Types of receivers ● China’s Compass (BeiDou) National DGPS (NDGPS) ● Phase locked loops (PLLs) ● Antennas ● Functional overview ● Commercial satellite-based ● Carrier-aiding of DLLs ● Antennas Precise Positioning systems ● Data demodulation Practical Aspects II ● Precise positioning concepts ● Receiver and interface standards ● Reference station networks DGPS Case Studies II Receiver Impairments and ● Connectors ● RINEX data format ● Wide Area Augmentation Enhancements ● Accessories System (WAAS) ● Impairments - bandlimiting, os- ● Test, evaluation, and signal ● Local Area Augmentation cillators, multipath, interference performance System (LAAS) ● Enhancements - carrier smooth- ● RINEX format ing, narrow correlator, codeless/ ● CORS&IGS network for semicodeless tracking, vector precise positioning (survey) tracking, external aiding ● Precise time transfer Course Objectives Ability to use Adobe Acrobat sticky notes on electronic course notes. To give you a comprehensive introduction to GPS and DGPS technology, NavtechGPS Glossary of GNSS Acronyms. system concepts, design, operation, implementation and applications, including A black and white hard copy of the course notes. critical information on DGPS and Kalman filtering concepts. A textbook from the list below. To provide detailed information on the GPS signal, its processing by the receiver, Course Fee Entitles You to One of the Following Books and the techniques by which GPS obtains position, velocity and time. Understanding GPS: Principles and Applications, 2nd ed., Elliott Kaplan & Chris To present current information on the status, plans, schedule and capabilities of Hegarty, Eds., Artech House, 2006, OR GPS, as well as of other satellite-based systems with position velocity and time Global Positioning System: Signals, Measurement and Performance, P. Misra determination applications. and P. Enge, 2nd ed., 2011. To fill technical information gaps for those working in the GPS and GNSS fields. GPS Basics for Technical Professionls, P. Misra, 2019. Note: This course encompasses Courses 122, 336 and 356B. If you have Introduction to GPS: the Global Positioning System, 2nd Ed., A. El-Rabbany, selected this course, do not separately select any of these course numbers. 2006. Who Should Attend? Note: This arrangement does not apply to private group contracts. Any books for Excellent for engineering staff who need to be rapidly brought up to speed on GPS, group contracts are negotiated on a case by case basis. and for those already working in GPS who need exposure to the system as a whole What Attendees Have Said in order to work more effectively. [My objective was to] gain a better understanding of GPS operating principles Prerequisites with a focus on error sources and differential Instructor: Familiarity with engineering terms and analysis techniques. General familiarity with GPS. I thought [Dr. Hegarty’s] teaching style was matrix operations is desirable for Thursday and Friday, and familiarity with signal excellent. He specifically tailored his approach to processing techniques is desirable for Wednesday through Friday. (The materials for the small classroom environment with significant days 3, 4 and 5 of Course 356 are more in-depth than what is taught in Course 346.) student interaction: True teaching versus lecturing. [I would recommend this course to] system engineers OR Materials You Will Keep Dr. Stephen Dr. Chris requiring more than a black box knowledge of GPS. Heppe Hegarty A color electronic copy of all course notes provided in advance on a USB drive — Name withheld upon request, March 2012 or CD-ROM. 12 FOR MORE INFORMATION, Contact Carolyn McDonald at (703) 256-8900 or [email protected]..
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