ABSTRACT
This update will explore how passive RF monitoring enables multi-layer Space Domain Awareness, including insights that span the orbital, link, and terrestrial domains. From an orbital perspective, passive RF is utilized to identify, characterize, and track satellites in various orbits, from low earth orbit (LEO) out to geosynchronous orbit (GEO) and beyond towards cislunar coverage. From a link perspective, passive RF provides insight into interference, jamming, and patterns of usage on allied and/or adversarial satellites. From a terrestrial perspective, RF signals can be geolocated to attribute transmissions to precise geographical locations. There will be a discussion of the methodologies associated with these techniques, including spacecraft identification, signal characterization, satellite tracking and maneuver detection, RF interference detection, and transmitter geolocation. This update provides real world commercial examples that highlight global capabilities, including benefits of data fusion between networks that monitor different orbital regimes. At the conclusion of the presentation, the audience will understand recent updates to passive RF sensing techniques, and the value these bring to the SDA mission.

BIOGRAPHY
Travis Bessell received the bachelor’s degree in computer systems engineering from Flinders University, Australia in 2005 and a master’s degree in signal and information processing from the University of Adelaide, Australia in 2008. From 2005 to 2020 he was part of the Data and Information Fusion Group with the Defence Science and Technology Group, Australia. In 2020 he joined Clearbox Systems to lead the research and development in Space Domain Awareness. His research interests, within the field of Space Domain Awareness, include passive radio frequency sensing, data fusion, nonlinear filtering and tracking.

BIOGRAPHY
Stuart Daughtridge, Vice President of Advanced Technology, Kratos Space, Training and Cybersecurity Mr. Daughtridge has extensive experience in the satellite and aerospace industry spanning over 30 years. In his current position, he leads Kratos’ satellite ground segment technology initiatives including the planning for the next generation of ground segment technology. In this role, Mr. Daughtridge is focused on today’s innovative and advanced technologies that will enable the ground station to become more dynamic, scalable, secure and cost-effective for customers. Prior to his current role at Kratos, he has held several senior management positions within the company. Mr. Daughtridge has also held various management and engineering positions with Orion Satellite Corporation, Intelsat, and Spacecom. He holds a Bachelor of Science from Lafayette College.