Author: Jon David StrizziPublisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 204
Book Description
An Improved Algorithm for Satellite Orbit Decay and Re-entry Prediction
Author: Jon David StrizziPublisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 204
Book Description
On the Prediction of Satellite Orbit Decay and Impact
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 46
Book Description
Presentation of problems associated with predicting satellite orbit decay plus a description of several computer programs for computing long-term orbit decay, model atmospheres, and final decay and re-entry. Computation of long-term orbit decay using the RAND Satellite Lifetime Program is illustrated for Explorer 9, and the orbit-decay data from the satellite are used to derive a current model atmosphere different from any standard atmospheres and permitting, in subsequent decay computations, a good long-term prediction capability. Computation of final orbit decay with both the Satellite Lifetime Program and the RAND ROCKET Program is then illustrated for the case of Cosmos 5; in this case adjustment of the satellite's ballistic coefficient is used to adjust effectively a model atmosphere to simulate the current atmosphere. (Author).
Masters Theses in the Pure and Applied Sciences
Author: Wade H. ShaferPublisher: Springer Science & Business Media
ISBN: 1461519691
Category : Science
Languages : en
Pages : 426
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 38 (thesis year 1993) a total of 13,787 thesis titles from 22 Canadian and 164 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 38 reports theses submitted in 1993, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
A Survey of Uncontrolled Satellite Reentry and Impact Prediction
Author: Brian D. NeuenfeldtPublisher:
ISBN:
Category :
Languages : en
Pages : 250
Book Description
The primary goal of this thesis is to identify the 'state-of-the-art' in orbit-decay-induced uncontrolled reentry/impact prediction methods, with an emphasis on the physics of the final few revolutions to impact. This was accomplished through a comprehensive literature survey from the 1950's to the present of unclassified military and civil databases. The results of the survey show that the current U.S. and international reentry/impact prediction methodologies are based on analysis which is over 30 years old. Of the various 'extensions' to the current reentry theory, of which the NORAD method is recognized as the international standard, there does not appear to be any one method which is singularly superior to the others. It has also been shown that numerous reentry investigations made simplifying assumptions due to insufficient data needed to accurately model reentry and also because of computing limitations of their day. Also, current deterministic dynamic models appear to inadequately describe the actual uncontrolled reentry process, due to a lack of observational data, uncertainty in determining aerodynamic coefficients, atmospheric density, and point mass modeling where changes in vehicle configuration, attitude and lift are neglected. Stochastic and statistical methods could be applied to the current methodology, to better analyze the various uncertainties, which could help to improve the overall predicted impact time and location; however, further research into these methods along with the physics of uncontrolled reentry is necessary. Reentry, Uncontrolled reentry, Reentry effects, Reentry prediction, Impact prediction, Reentry motion, Reentry aerothermodynamics, Satellite breakup, Atmospheric density models, Reentry/ impact models.
Algorithms for Satellite Orbital Dynamics
Author: Lin LiuPublisher: Springer Nature
ISBN: 9811948399
Category : Science
Languages : en
Pages : 576
Book Description
This book highlights the fundamental physics of orbit theory, dynamical models, methods of orbit determination, design, measurement, adjustment, and complete calculations for the position, tracking, and prediction of satellites and deep spacecraft. It emphasizes specific methods, related mathematical calculations, and worked examples and exercises. Therefore, technicians and engineers in the aerospace industry can directly apply them to their practical work. Dedicated to undergraduate students and graduate students, researchers, and professionals in astronomy, physics, space science, and related aerospace industries, the book is an integrated work based on the accumulated knowledge in satellite orbit dynamics and the author’s more than five decades of personal research and teaching experience in astronomy and aerospace dynamics.
Space Debris
Author: Heiner KlinkradPublisher: Springer Science & Business Media
ISBN: 3540376747
Category : Technology & Engineering
Languages : en
Pages : 438
Book Description
The future evolution of the debris environment will be forecast on the basis of traffic models and possible hazard mitigation practices. The text shows how large trackable objects will have re-entry pinpointed and predictions made on related risk assessment for possible ground impact. Models will also be described for meteoroids which are also a prevailing risk.
AIAA Space Programs and Technologies Conference
Author: Reduced-order Atmospheric Density Modeling for LEO Satellite Orbital Reentry Prediction
Author: Nicolette LeAnn ClarkPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Atmospheric density modeling and uncertainty quantification for fast and accurate orbit propagation are vital to drag force estimation for satellite reentry prediction and conjunction assessment in today's increasingly cluttered Low Earth Orbit (LEO) environment. Current density models can be computationally expensive, and often contain large errors, which make density modeling a leading cause of uncertainty in drag estimation. Reduced-order atmospheric density Models (ROMs) have shown potential to provide good predictive performance at a significantly lower computational cost, by propagating a low-dimensional representation of the atmospheric density state instead of the entire density state. In this thesis, ROMs were implemented in a high-fidelity orbital propagator and tested on the problem of reentry modeling for LEO objects. First, uncertainty quantification was performed on a test case for three significant sources of uncertainty in reentry modeling to compare the impact of uncertainty from initial state, ballistic coefficient, and space weather indices on residual lifetime estimation. These results highlighted features of interest in ROM behavior relative to empirical models. Second, ROMs were used to predict reentry of three LEO object test cases. ROMs were found to provide residual lifetime estimation performance comparable to current empirical models such as JB2008 and NRLMSISE-00, with a run time reduction of up to 70\% compared to the empirical models. ROMs were especially effective for longer predictions starting two or more days prior to LEO object reentry, where in some cases ROMs outperformed both empirical models while saving hours of run time. These findings validate the utility of ROMs for orbit propagation applications such as reentry prediction.
Satellite Orbit Decay Prediction and Dispersion Analysis
Author: Martin C. EcksteinSatellite Orbit Decay and Lifetime Prediction : a Literature Survey
Author: Canada. Department of CommunicationsPublisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 200
Book Description