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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Navigation Using Doppler Shift From LEO Constellations and INS Data


    Contributors:


    Publication date :

    2022-10-01


    Size :

    2151312 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    NAVIGATION USING DOPPLER SHIFT FROM LEO CONSTELLATIONS AND INS DATA

    McLemore, Brian / Psiaki, Mark L. | British Library Conference Proceedings | 2020


    Communication and Navigation Constellations

    Blachier, B. L. / International Astronomical Federation | British Library Conference Proceedings | 1998


    GDOP of Navigation using Pseudorange and Doppler Shift from a LEO Constellation

    McLemore, Brian / Psiaki, Mark L. | British Library Conference Proceedings | 2021


    Fully Decentralized Cooperative Navigation for Spacecraft Constellations

    Qin, Tong / Macdonald, Malcolm / Qiao, Dong | IEEE | 2021


    NAVIGATION USING CARRIER DOPPLER SHIFT FROM A LEO CONSTELLATION: TRANSIT ON STEROIDS

    Psiaki, Mark L. | British Library Conference Proceedings | 2020