[New Date due to weather!] GPS Interference: Origins, Effects, and Mitigations
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After a quick review of GPS signals and how receivers determine position, the focus is on the effects of select interference types on specific GPS signals, both military and civil. Jamming effectiveness as a function of range is examined and the effect of ground mobile propagation in limiting effective jammer range is described. Military mitigations such as adaptive arrays and inertial measurement unit (IMU) aiding are discussed as well as their limitations.

 Export to Your Calendar 3/27/2019
When: Wednesday March 27
5:30-8:00 PM
Where: Map this event »
Community College of Aurora
16000 East CentreTech Parkway
Building CCLA, Room 114
Aurora, Colorado  80011
United States
Contact: Jason Fritz

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Agenda

5:30-6:00 Light dinner (probably pizza) and networking
6:00-7:00 GPS Presentation
7:00-7:30 Q&A, wrap-up

Abstract

GPS has been described as the stealth utility. Diverse elements of our military capability and national infrastructure are critically reliant on precise location and time, usually derived from GPS.  Yet, GPS signal reception is potentially vulnerable to interference and spoofing. This webinar provides a high-level perspective on the effects of jamming and spoofing on GPS receivers and describes some interference mitigation approaches.

After a quick review of GPS signals and how receivers determine position, the focus is on the effects of select interference types on specific GPS signals, both military and civil. Jamming effectiveness as a function of range is examined and the effect of ground mobile propagation in limiting effective jammer range is described. Military mitigations such as adaptive arrays and inertial measurement unit (IMU) aiding are discussed as well as their limitations. The prospects for integrating rapidly evolving civil “smartphone” approaches into a military context are then explored.

Finally, because GPS is a dual-use civil/military system, training military users for operation in a challenged RF environment is highly problematic since actually jamming GPS is often not an option. Discussion will include some approaches to realistically simulate jamming effects under field conditions.

Biography

Logan Scott has over 35 years of military and civil GPS systems engineering experience. He is a consultant specializing in radio frequency signal processing and waveform design. At Texas Instruments, he pioneered approaches for building high-performance, jamming-resistant digital receivers. At Omnipoint (now T-Mobile), he developed spectrum sharing techniques that led to a Pioneer’s preference award from the FCC. He has been active in making national policy recommendations for civil receiver certification, jammer detection and location, spectrum protection, and cryptographic civil GNSS watermarking features. He is a co-founder of Lonestar Aerospace, an advanced decision analytics company located in Texas. Logan is a Fellow of the Institute of Navigation, a Senior Member of the IEEE, and holds 42 US patents.

With over 13,000 members internationally, the Association of Old Crows is an organization for individuals who have common interests in Electronic Warfare (EW), Electromagnetic Spectrum Management Operations, Cyber Electromagnetic Activities (CEMA), Information Operations (IO), and other information related capabilities. The Association of Old Crows provides a means of connecting members and organizations nationally and internationally across government, defense, industry, and academia to promote the exchange of ideas and information, and provides a platform to recognize advances and contributions in these fields.
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