Abstract
Absolute navigation using the downlink communication signals of massive low Earth orbit (LEO) constellations augmented by data from an inertial navigation system (INS) is considered. Lack of atomic clocks on-board LEO satellites requires the use of Doppler shift as a navigation observable. Furthermore, footprint limits of downlink signals’ beams necessitate the use of a tightly coupled INS/radio-navigation filter in order to compensate for the fact that it is not possible to measure carrier Doppler shift simultaneously from eight or more satellites. The navigation solution error is shown for a simulation, which demonstrates the feasibility of combining measurements from LEO constellations and INS data to enable global navigation satellite systems-like navigation capabilities. Additional simulations study how navigation solution error is affected by IMU quality, signal availability, downlink spot beam steering protocol, and constellation characteristics.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Transactions on Aerospace and Electronic Systems
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
