Course 311: Protecting GPS Infrastructure

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!

Instructor	Dr. Stephen Heppe, Insitu Inc.
Objectives	This course starts with an overview of GPS-based Position, Navigation, and Timing operations and applications and then moves into a half-day description of the methods, procedures, engineering principles and policies associated with protecting critical GPS infrastructure. This portion of the course includes the development of standardized link budgets and related analysis techniques directed toward the maintenance of safe GPS-related infrastructure operations, and case studies of spectrum management and protection from other users of the RF spectrum. After a break for lunch, the discussion turns to a more technical analysis of unintentional interference and jamming. The GPS receiver architecture is explored in greater detail. Threats are characterized and their impacts on GPS receivers are described. The course material is augmented with case studies and receiver mitigation techniques useful against high levels of electromagnetic interference.
Prerequisite	A basic knowledge of satellite navigation (GPS) systems, as well as some familiarity with engineering analysis methods is assumed. Course 111 or equivalent experience are prerequisites.
Course Schedule	8:30 - The Cornerstone of Position, Navigation and Timing (PNT) Overview of GPS operations and applications Addressing the threats of interference and jamming Introduction to spectrum concerns and protection Specifications, Orders and Regulations 9:45 - GPS Receiver Performance Case Studies GPS receiver architectures I Broadband and CW interference effects and mitigation Signal-to-noise (and C/N0) measurements Interference and system integrity; protecting users Infrastructure elements related to GPS and their protection 11:00 - GPS – Attaining Infrastructure Robustness Interference, jamming and related degradation factors Debunking myths on interference threats Key mathematical concepts with relevant examples The basic GPS interference link budget and its interpretation Improvements for the future; GPS modernization, other systems 12:00 - Lunch on your own 1:30 - Receiver Threat Overview and Unintentional RFI GPS receiver architectures II Functional impact of RF interference (CW, noise, pulse) Receiver performance results for typical (civilian) RFI Scope of problem; required C/N0; RF interference 2:45 - Jamming and Spoofing Threats Jamming and spoofing objectives; analysis Receiver performance; break points; countermeasures Effects of broad band noise, pulsed noise; CW spectral matching Spoofing techniques; pseudorange and Doppler matching Jamming/spoofing comparisons; GPS vs. GLONASS Effects of jamming/spoofing on DGPS and WAAS 4:00 - Case Studies Terrorist attack Land-mobile and maritime users Comparison of old and new GPS waveforms (throughout the day) 5:00 - Course Ends
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.
Continuing Education Units	0.6 (6 hours)