Ochieng remained at Nottingham as a
postdoctoral research associate after his PhD, before joining
Thales Group as a navigation engineer. Ochieng joined
Imperial College London in 1997. He works on the design and application of navigation systems, and hopes to achieve a truly global position, navigation and timing (PNT) system. Professor Ochieng works in the area of intelligent traffic control especially Smart Intermodal User-Centric Mobility and how it can be used in security and to regulate traffic in congested streets and railways, as well as in
air traffic management and maritime management. He has been involved with several international projects, including
European Geostationary Navigation Overlay Service (EGNOS),
Galileo,
global navigation satellite system (GNSS) and the
Single European Sky ATM Research (SESAR) joint undertaking. For the
GNSS system, Ochieng worked on sensing, modelling of errors in the positional accuracy and
ultra-wideband radio systems. He has been involved with the transformation of London's transport system and introduction of the London
Congestion Charge. He was promoted to a Chair in Positioning and Navigation Systems in 2007. In 2021, he became the Vice President of the Royal Institute of Navigation (RIN) and President in 2024. His focussed research is into the development of tools that help to shape the thinking of societies in the design and building of infrastructure resilience and security; smart user-centric intermodal mobility and; Positioning, Navigation and Timing (PNT) systems. At Imperial College London, Ochieng is part of the
Engineering and Physical Sciences Research Council (EPSRC) Centre for Doctoral Training in Sustainable Civil Engineering. He has advised on algorithms that can support the navigation of satellites. In 2021, Ochieng was an expert witness on UK space strategy and UK satellite infrastructure at the Parliamentary select committee on science and technology. == Awards and honours ==