ORBIT COVARIANCE, ESTIMATION AND ANALYSIS TOOL
First Claim
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1. A system for estimating the position, velocity and other parameters of a plurality of orbiting bodies, comprising:
- at least one processor configured to compute an estimated position, velocity, and other parameters of each orbiting body of the plurality of orbiting bodies, simultaneously, at least partially by a Kalman filter smoothing process using at least one of electromagnetic and optical emissions of the orbital bodies and ground stations.
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Abstract
Improved orbit/covariance estimation and analysis (OCEAN) system and method are presented utilizing ground station observations collected from satellites passing overhead to estimate the positions, velocities, and other parameters of multiple satellites using weighted least squares (WLS) batch and/or Kalman filter smoothing (KFS) estimation algorithms to estimate each parameter, with or without a priori knowledge of the errors involved with each observed parameter.
30 Citations
21 Claims
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1. A system for estimating the position, velocity and other parameters of a plurality of orbiting bodies, comprising:
at least one processor configured to compute an estimated position, velocity, and other parameters of each orbiting body of the plurality of orbiting bodies, simultaneously, at least partially by a Kalman filter smoothing process using at least one of electromagnetic and optical emissions of the orbital bodies and ground stations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer-implemented method for estimating the position, velocity and other parameters of a plurality of orbiting bodies, the method comprising:
using at least one processor, computing an estimated position, velocity, and other parameters of each orbiting body of the plurality of orbiting bodies, simultaneously, at least partially by a Kalman filter smoothing process using at least one of electromagnetic and optical emissions of the orbital bodies and ground stations. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system to estimate and refine the knowledge of spatial and temporal states of the components of a satellite system space and ground segments for the purposes of providing a terrestrial navigation accuracy set of information, comprising:
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at least one processor configured to compute an estimated position, velocity, and other parameters of each orbiting body of the plurality of orbiting bodies by at least one of a Kalman filter smoothing process and a weighted least squares batch estimation process using at least one of electromagnetic and optical emissions of the orbiting bodies and ground stations; the at least one processor configured to receive a plurality of carrier phase-based Iridium pseudorange measurements created by at least one ground receiver and reformatted by an operations center; and the at least one processor configured to process the received carrier phase based Iridium measurements to create an updated precision position and timing estimate for a plurality of Iridium satellites, the precision position and timing estimate for the plurality of Iridium satellites including an updated estimate for the position and timing of the Iridium satellites and a high precision prediction of where the satellites will be, the precision position and timing estimate being suitable for creating orbital and timing parameters for uplinking to the Iridium constellation for re-broadcasting to Iridium augmentation service users.
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Specification