JP-2025529621-A5 -

Dates

Publication Date

20260508

Application Date

20230522

Description

Clause 30. A computer-readable medium as described in any one of Clauses 26 to 29, which includes a code for obtaining historical orbital data that uniformly samples archived two-row orbital element (TLE) data of a set of satellites over a period of time. The invention described in the original claims of this application is listed below. [C1] A method for facilitating the orientation of a mobile device to a satellite of a satellite constellation for satellite-based data communications, Obtaining hierarchical orbit data showing the orbital motion of a set of satellites, including at least a subset of satellites in a satellite constellation, over a certain period of time, For each satellite in the set of satellites, the orbital model is fitted to the historical data of each satellite to estimate a set of orbital parameter values such that at least one of the set of orbital parameter values is common across the group of satellites in the set of satellites. A method comprising sending to at least one mobile device support data indicating each set of orbital parameter values for all satellites in the set of satellites. [C2] Fitting the set of orbital parameter values to each satellite is In a first calculation that fits the orbital model to a first portion of the historical data covering a first portion of the period, a preliminary set of orbital parameter values is estimated. The method of C1, comprising using a preliminary set of orbital parameter values as seed values in a second operation for fitting the orbital model to a second portion of the historical data extending to at least the first portion of the period. [C3] The method of C2, wherein at least one orbital parameter value common across the group of satellites is determined by the second operation which fits the orbital model to the second portion of the historical data. [C4] The method of C2, wherein the historical data relating to the first portion of the period includes data relating to one or more steering events for each satellite in the set of satellites. [C5] The group of satellites, Satellites in the common orbital plane, Satellites within a common orbital shell, or All satellites of the aforementioned satellite constellation, or The method described in C1, including combinations thereof. [C6] The orbital model includes the Kepler model, and the set of orbital parameter values is The square root of the semi-major axis, eccentricity, average periapsis angle, inclination angle, Right ascension of the ascending node (RAN), RAN rate, or Argument perigee, or The method described in C1, including combinations thereof. [C7] The orbital model includes a near-equatorial model, and the set of orbital parameter values is semi-major axis, Components of the eccentricity vector in the near-equatorial reference frame, The components of the ascending node vector within the aforementioned near-equatorial reference frame, or Average longitude, or The method described in C1, including combinations thereof. [C8] The method of C1, wherein obtaining the historical orbit data includes uniformly sampling archived two-row orbital element (TLE) data of the set of satellites for the period. [C9] A device for facilitating the orientation of a mobile device to a satellite of a satellite constellation for satellite-based data communications, Transmitter and receiver, Memory and One or more processors, which are communicably coupled to the transceiver and the memory, By obtaining historical orbital data showing the orbital motion of a set of satellites, including at least a subset of the satellites in the satellite constellation, over a certain period of time, For each satellite in the set of satellites, by fitting the orbital model to the historical data of each satellite, a set of orbital parameter values is estimated in which at least one of the set of orbital values is common across the group of satellites in the set of satellites. A device comprising a processor configured to send to at least one mobile device support data indicating each set of orbital parameter values for all of the satellites in the set of satellites. [C10] The device according to C9, wherein the device includes the mobile device or computer server. [C11] The one or more processors fit the set of orbital parameter values for each satellite, In a first calculation that fits the orbital model to a first portion of the historical data covering a first portion of the period, a preliminary set of orbital parameter values is estimated. The device according to C9, configured to use a preliminary set of orbital parameter values as seed values in a second calculation for fitting the orbital model to a second portion of the historical data extending over at least the first portion of the period. [C12] The device according to C11, wherein at least one orbital parameter value common across the group of satellites is determined by a second operation that fits the orbital model to the second portion of the histo