Application Of Statistical Filter Theory To The Optimal Estimation Of Position And Velocity On Board A Circumlunar Vehicle
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Application Of Statistical Filter Theory To The Optimal Estimation Of Position And Velocity On Board A Circumlunar Vehicle
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Author : Gerald L. Smith
language : en
Publisher:
Release Date : 1962
Application Of Statistical Filter Theory To The Optimal Estimation Of Position And Velocity On Board A Circumlunar Vehicle written by Gerald L. Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Space trajectories categories.
Nasa Technical Report
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Author :
language : en
Publisher:
Release Date : 1962
Nasa Technical Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Aerodynamics categories.
Nasa Technical Note
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Author :
language : en
Publisher:
Release Date : 1970
Nasa Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.
Proceedings Of The Future Technologies Conference Ftc 2019
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Author : Kohei Arai
language : en
Publisher: Springer Nature
Release Date : 2019-10-12
Proceedings Of The Future Technologies Conference Ftc 2019 written by Kohei Arai and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-12 with Technology & Engineering categories.
This book presents state-of-the-art intelligent methods and techniques for solving real-world problems and offers a vision of future research. Featuring 143 papers from the 4th Future Technologies Conference, held in San Francisco, USA, in 2019, it covers a wide range of important topics, including, but not limited to, computing, electronics, artificial intelligence, robotics, security and communications and their applications to the real world. As such, it is an interesting, exciting and inspiring read.
Navigation And Guidance Analysis Of A Mars Probe Launched From A Manned Flyby Spacecraft
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Author : Thomas B. Murtagh
language : en
Publisher:
Release Date : 1968
Navigation And Guidance Analysis Of A Mars Probe Launched From A Manned Flyby Spacecraft written by Thomas B. Murtagh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Launch vehicles (Astronautics) categories.
Guidance And Control Ii
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Author : Robert Langford
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Guidance And Control Ii written by Robert Langford and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.
Guidance and Control - II focuses on the techniques and processes involved relative to the control of rockets, missiles, and other space vehicles. Divided into seven parts with 36 chapters, the book focuses first on active and passive control for space vehicles; advances in attitude control; the stabilization of earth satellites; and the theoretical and practical considerations of solar pressure attitude control for interplanetary space vehicles. The compilation also notes the use of gyrostabilizers on satellites, including the use of two-pulse attitude control and bank angle control for an asymmetric spinning satellite. Experiments on gyro rotor imbalance on a stable platform and various navigation and guidance systems are also presented. The book also looks at the use of sensors, the stellar techniques for interplanetary flights, and control of space vehicles. The text also gives emphasis on various mathematical equations used to measure fuel optimization in orbital rendezvous. Guidance techniques in lunar landing are also discussed. The compilation is important for readers interested in studying the methods, principles, and processes involved in the control of space vehicles.
Ict Innovations 2016
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Author : Georgi Stojanov
language : en
Publisher: Springer
Release Date : 2017-10-11
Ict Innovations 2016 written by Georgi Stojanov and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-11 with Technology & Engineering categories.
The International Conference on ICT Innovations was held in September 2016, in Ohrid, Macedonia, with the main topic “Cognitive Functions and Next Generation ICT Systems”. We live in the era where technologies are intimately woven into virtually all aspects of daily life and are becoming almost invisible. While these technologies have considerable benefits, they also have a number of shortcomings and unforeseen consequences. For example, on the one hand, bodily sensors that track physical activity, physiological parameters and sleep patterns can help promote healthy habits and can enable early detection of problems. On the other hand, attention spans are becoming shorter and shorter due to constant interruptions by notifications, emails, and instant messages being delivered to cell phones or watches, and similar disturbances. Moreover, the privacy issues involved in storing and manipulation of these data must not be neglected. The technological convergence of sciences that were considered separate in the past, like information and communication technologies, cognitive sciences, nanotechnologies and biotechnologies, determines not only our society, health and economy, but also our education and culture. The conference gathered academics, professionals and practitioners involved in developing solutions and systems in the industrial and business arena, especially innovative commercial implementations, to discuss novel applications of these next-generation, emerging technologies in the context of human cognitive functions.
On Timing Based Localization In Cellular Radio Networks
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Author : Kamiar Radnosrati
language : en
Publisher: Linköping University Electronic Press
Release Date : 2018-08-29
On Timing Based Localization In Cellular Radio Networks written by Kamiar Radnosrati and has been published by Linköping University Electronic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-29 with categories.
The possibilities for positioning in cellular networks has increased over time, pushed by increased needs for location based products and services for a variety of purposes. It all started with rough position estimates based on timing measurements and sector information available in the global system for mobile communication (gsm), and today there is an increased standardization effort to provide more position relevant measurements in cellular communication systems to improve on localization accuracy and availability. A first purpose of this thesis is to survey recent efforts in the area and their potential for localization. The rest of the thesis then investigates three particular aspects, where the focus is on timing measurements. How can these be combined in the best way in long term evolution (lte), what is the potential for the new narrow-band communication links for localization, and can the timing measurement error be more accurately modeled? The first contribution concerns a narrow-band standard in lte intended for internet of things (iot) devices. This lte standard includes a special position reference signal sent synchronized by all base stations (bs) to all iot devices. Each device can then compute several pair-wise time differences that corresponds to hyperbolic functions. Using multilateration methods the intersection of a set of such hyperbolas can be computed. An extensive performance study using a professional simulation environment with realistic user models is presented, indicating that a decent position accuracy can be achieved despite the narrow bandwidth of the channel. The second contribution is a study of how downlink measurements in lte can be combined. Time of flight (tof) to the serving bs and time difference of arrival (tdoa) to the neighboring bs are used as measurements. From a geometrical perspective, the position estimation problem involves computing the intersection of a circle and hyperbolas, all with uncertain radii. We propose a fusion framework for both snapshot estimation and filtering, and evaluate with both simulated and experimental field test data. The results indicate that the position accuracy is better than 40 meters 95% of the time. A third study in the thesis analyzes the statistical distribution of timing measurement errors in lte systems. Three different machine learning methods are applied to the experimental data to fit Gaussian mixture distributions to the observed measurement errors. Since current positioning algorithms are mostly based on Gaussian distribution models, knowledge of a good model for the measurement errors can be used to improve the accuracy and robustness of the algorithms. The obtained results indicate that a single Gaussian distribution is not adequate to model the real toa measurement errors. One possible future study is to further develop standard algorithms with these models.
On The Theory And Methods Of Statistical Inference
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Author : Gerald L. Smith
language : en
Publisher:
Release Date : 1967
On The Theory And Methods Of Statistical Inference written by Gerald L. Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Bayesian statistical decision theory categories.
Statistical inference is the process of intelligently using information from observations and experiments to draw conclusions and make decisions. The class of inference problems includes all the classical statistical problems of point and parameter estimation, regression analysis, and hypothesis testing, as well as the engineering problems of control and filtering. In order that inference problems may be stated in mathematical terms, it is necessary to utilize mathematical of the often intangible entities called knowledge and goodness (or optimality). Probability is the measure utilized for knowledge, and loss functions serve as measures of optimality. The conversion of knowledge and goodness into functional or numerical terms is usually quite subjective and thus to a substantial extent arbitrary. Nevertheless, the conversion is necessary if the language of mathematics is to be employed in the inference logic. The various mathematical methods developed, under different assumptions, for solving inferential problems are unavoidable related since all are (in principle) reducible to a common form. Some of the most fundamental of these -- least squares, minimum variance, and maximum likelihood -- are reviewed to show their interrelationships. The newer developments of sequential analysis and filtering are similarly described. All of these are shown to be special cases of the general theory of Bayesian decision making. The Bayesian decision theory requires the specification of an appropriate loss function. The optimum decision is then defined as that which minimizes the mathematical expectation of this loss. Computation of this expectation requires obtaining the posterior distribution of the unknown state based on prescribed scientific observations. Under restrictive conditions the computations involved in this general decision-making procedure are reducible to relatively simple forms. For application under more general conditions methods of approximation and efficient computational algorithms are presently being developed.
Application Of Statistical Filter Theory To The Optimal Estimation Of Position And Velocity On Board A Circumlunar Vehicle
DOWNLOAD
Author : Gerald L. Smith
language : en
Publisher:
Release Date : 1962
Application Of Statistical Filter Theory To The Optimal Estimation Of Position And Velocity On Board A Circumlunar Vehicle written by Gerald L. Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Space trajectories categories.