Image Navigation and Registration improvements using GPS

With recent advancements in GPS receiver technology, it will now be possible to acquire and track weak GPS signals at geostationary orbit. As INR (Image Navigation and Registration) requirements become tighter for the next generation weather satellites, due in part to increased spatial resolution, orbit knowledge will play a significant role in the pointing error budget. This paper presents a multi-sensor and multi-spectral approach to image navigation for the next generation geostationary weather satellite programs. The sensors include GPS and imaging radiometers.