111. Tactical Tech: How Smartphones are Countering Jamming in Ukraine with Dr. Sean Gorman

“The hope is that we can begin to profile what the capabilities of the jammer are that we’re seeing out in the field with enough measurements from enough devices”

[Editor’s Note: In last week’s post, Sherman L. Barto posited a fictional intelligence (FICINT) scenario detailing China’s swift victory over Taiwan and the United States — achieved in part by the People’s Liberation Army’s use of

“… jam-resistant swarms utiliz[ing] permissioned blockchain encryption and … onboard AI adjust[ing] Software Defined Radio (SDR) receivers in real time to ignore interference that does not transmit with proper encryption and authentication. The loss of GNSS satellite navigation was assumed by PLA military planners and is replaced with a ship-based Long Range Navigation (LORAN) system providing the location of the three PLAN aircraft carriers to UAVs which is then paired with UAV computer vision trained on detailed maps of Taiwan to recognize where they are. Each UAV transmits a location tag every second to each adjacent node in the swarm, enabling precision location within 20 meters. The one pulse per second geolocation tags perform double duty as a network timing protocol, ensuring all PLA networks remain in synch despite the loss of GNSS timing.”

A U.S. Army maneuver Brigade Combat Team (BCT) has over 2,500 pieces of equipment dependent on space-based assets for Positioning, Navigation, and Timing (PNT) — precision strikes and the convergence of massed fires depend on accurate and resilient PNT data. However, as we’ve seen in Russia’s on-going war in Ukraine, access to this PNT data is increasingly being disrupted or spoofed by Electronic Warfare (EW) jammers.

Today’s The Convergence podcast welcomes Dr. Sean Gorman, CEO and co-founder of Zephr.xyz, to discuss how his company is “crowdsourcing [GPS] measurements across a bunch of phones to get a better version of reality by looking at more satellites and getting more measurements.” Zephr is also harnessing this capability as a counter-EW jamming capability, turning everyone with a cellphone into a sensor to detect, identify, catalog, and locate these emitters. These capabilities, conceptually proven in Ukraine, may soon be tested in Taiwan against our most capable adversary — the People’s Liberation Army — Enjoy!]

Sean Gorman is the CEO and co-founder of Zephr.xyz, a developer of next-gen networked positioning technologies. Gorman has a more than 20-year background as a researcher, entrepreneur, academic, and subject matter expert in the field of geospatial data science and its national security implications. He is the former engineering manager for Snap’s Map team, former Chief Strategist for ESRI’s DC Development Center, founder of Pixel8earth, GeoIQ, and Timbr.io, and held other senior positions at Maxar and iXOL. Gorman served as a subject matter expert for the Department of Homeland Security’s Critical Infrastructure Task Force and Homeland Security Advisory Council, and he’s be...