Ralph bordner (10 Ergebnisse)
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paperback. Zustand: Good. Cover and edges may have some wear.
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Zustand: New. KlappentextrnrnPrecise relative position determination of satellite formation elements in near circular orbits is the focus of this thesis. A Bayes filter is used for the estimator with the dynamics solution obtained by solving the time periodic.
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Zustand: New. KlappentextrnrnPrecise relative position determination of satellite formation elements in near circular orbits is the focus of this thesis. A Bayes filter is used for the estimator with the dynamics solution obtained by solving the time periodic.
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Zustand: New. KlappentextrnrnThe Kolmogorov-Arnold-Moser (KAM) theorem states that lightly perturbed integrable Hamiltonian systems maintain their multiply periodic, toroidal motion in the phase space. The assertion that earth orbiting satellites under the in.
Sprache: Englisch
Verlag: British Library, Historical Print Editions Nov 2012 2012
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Taschenbuch. Zustand: Neu. Neuware - Precise relative position determination of satellite formation elements in near circular orbits is the focus of this thesis. A Bayes filter is used for the estimator with the dynamics solution obtained by solving the time periodic, linearized system via Floquet Theory. This approach is simila…r to that of the traditional Clohessy- Wiltshire treatment, however much more of the system's behavior is retained by using a time periodic linear system. The dynamics model includes all zonal harmonics of the earth as well as sectoral, tesseral, and air drag perturbations. The filter algorithm was given three types of simulated measurements: relative Carrier-Phase Differential GPS data, Standard Positioning System GPS data and range measurements between each satellite. Simulations were conducted to investigate the accuracy obtainable with these measurements. Results obtained are on the order of the noise of the measurements (as low as 2 centimeters in each coordinate axis).
Sprache: Englisch
Verlag: British Library, Historical Print Editions Dez 2012 2012
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Taschenbuch. Zustand: Neu. Neuware - Precise relative position determination of satellite formation elements in near circular orbits is the focus of this thesis. A Bayes filter is used for the estimator with the dynamics solution obtained by solving the time periodic, linearized system via Floquet Theory. This approach is simila…r to that of the traditional Clohessy- Wiltshire treatment, however much more of the system's behavior is retained by using a time periodic linear system. The dynamics model includes all zonal harmonics of the earth as well as sectoral, tesseral, and air drag perturbations. The filter algorithm was given three types of simulated measurements: relative Carrier-Phase Differential GPS data, Standard Positioning System GPS data and range measurements between each satellite. Simulations were conducted to investigate the accuracy obtainable with these measurements. Results obtained are on the order of the noise of the measurements (as low as 2 centimeters in each coordinate axis).
Sprache: Englisch
Verlag: British Library, Historical Print Editions Okt 2012 2012
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Taschenbuch. Zustand: Neu. Neuware - The Kolmogorov-Arnold-Moser (KAM) theorem states that lightly perturbed integrable Hamiltonian systems maintain their multiply periodic, toroidal motion in the phase space. The assertion that earth orbiting satellites under the influence of the geopotential mimic this behavior is the underlyi…ng premise of this work. This paper focuses on applying trajectory following spectral methods on selected orbits to decompose them into multi-periodic Fourier series, effectively compressing ephemerides for long-term use. The proposed approach focuses on fitting local spectral structures, denoted as frequency clusters, within the sampled orbital data to the analytical form of the windowed, truncated, continuous Fourier transform. This approach is significantly more numerically efficient than fitting every coefficient within the N-tuple Fourier series simultaneously. Numerical results using integrated data show maximum error in orbital torus fits can be kept at the single-digit-meter level per coordinate axis over a 1 year period.
