Interference Mitigation for GPS Based Attitude Determination, Markel Matthew

Автор: Markel Howard
Название: The Kelloggs: The Battling Brothers of Battle Creek
ISBN: 0307948374 ISBN-13(EAN): 9780307948373
Издательство: Random House (USA)
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Описание: ***2017 National Book Critics Circle Award Finalist for Nonfiction***

"What's more American than Corn Flakes?" --Bing Crosby

From the much admired medical historian ("Markel shows just how compelling the medical history can be"--Andrea Barrett) and author of An Anatomy of Addiction ("Absorbing, vivid"--Sherwin Nuland, The New York Times Book Review, front page)--the story of America's empire builders: John and Will Kellogg.

John Harvey Kellogg was one of America's most beloved physicians; a best-selling author, lecturer, and health-magazine publisher; founder of the Battle Creek Sanitarium; and patron saint of the pursuit of wellness. His youngest brother, Will, was the founder of the Battle Creek Toasted Corn Flake Company, which revolutionized the mass production of food and what we eat for breakfast.

In The Kelloggs, Howard Markel tells the sweeping saga of these two extraordinary men, whose lifelong competition and enmity toward one another changed America's notion of health and wellness from the mid-nineteenth to the mid-twentieth centuries, and who helped change the course of American medicine, nutrition, wellness, and diet.

The Kelloggs were of Puritan stock, a family that came to the shores of New England in the mid-seventeenth century, that became one of the biggest in the county, and then renounced it all for the religious calling of Ellen Harmon White, a self-proclaimed prophetess, and James White, whose new Seventh-day Adventist theology was based on Christian principles and sound body, mind, and hygiene rules--Ellen called it "health reform."

The Whites groomed the young John Kellogg for a central role in the Seventh-day Adventist Church and sent him to America's finest Medical College. Kellogg's main medical focus--and America's number one malady: indigestion (Walt Whitman described it as "the great American evil").

Markel gives us the life and times of the Kellogg brothers of Battle Creek: Dr. John Harvey Kellogg and his world-famous Battle Creek Sanitarium medical center, spa, and grand hotel attracted thousands actively pursuing health and well-being. Among the guests: Mary Todd Lincoln, Amelia Earhart, Booker T. Washington, Johnny Weissmuller, Dale Carnegie, Sojourner Truth, Henry Ford, John D. Rockefeller, Jr., and George Bernard Shaw. And the presidents he advised: Taft, Harding, Hoover, and Roosevelt, with first lady Eleanor. The brothers Kellogg experimented on malt, wheat, and corn meal, and, tinkering with special ovens and toasting devices, came up with a ready-to-eat, easily digested cereal they called Corn Flakes.

As Markel chronicles the Kelloggs' fascinating, Magnificent Ambersons-like ascent into the pantheon of American industrialists, we see the vast changes in American social mores that took shape in diet, health, medicine, philanthropy, and food manufacturing during seven decades--changing the lives of millions and helping to shape our industrial age.

Автор: Markel Matthew
Название: Interference Mitigation for GPS Based Attitude Determination
ISBN: 0530004348 ISBN-13(EAN): 9780530004341
Издательство: Неизвестно
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Описание: Abstract:

With its low transmit power and considerable orbit distance from receivers, the
Global positioning system (GPS) waveforms are known to be susceptible to jamming. Efforts to date have investigated various receiver designs and adaptive antenna arrays to improve the anti-jam capabilities of GPS position location, but until this work no extension of anti-jam capabilities to attitude determination (determination of the orientation of a body in space) existed. This dissertation provides a comprehensive investigation into the new field of robust, jam-resistant attitude determination using the Global Positioning System.
We present a generic adaptive antenna array and receiver design that provide the necessary data for both position location and attitude determination in a jammed environment. Using the data this receiver provides we develop a new maximum likelihood attitude estimator (the MLAE) that provides attitude determination capability even in jammed environments. In order to accomplish this, new ways of viewing the standard array processing and direction finding tenants are presented. This leads to a new interpretation and parameterization of the array response vector (spatial steering vector) and secondary data covariance matrix. The MLAE optimally includes information from all satellites in view, and its performance is shown herein to asymptotically achieve the Cramer-Rao Bound (CRB), i.e. the MLAE asymptotically achieves the performance limit for unbiased estimators.
As an approximation to this estimator, a second estimator is developed that, at the expense of performance, may provide increased computational capability. Two versions of this second estimator are presented that combine direction nding with attitude estimation. A method of optimally incorporating data from both GPS frequencies into the estimation is developed. This approach maintains the jammer mitigation capabilities of the previous estimators and allows for a larger array spacing, therefore increasing the accuracy of the attitude estimates. Simulation based performance results of the various estimators are presented for various antenna topologies and interference scenarios. The simulation results indicate that the new algorithms provide signicant improvement over conventional attitude determination methods. In addition, the MLAE is shown to provide better performance than conventional methods of attitude determination even in unjammed environments.

Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Interference Mitigation for GPS Based Attitude Determination" by Matthew David Markel, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.

Автор: Markel Lester
Название: Public Opinion and Foreign Policy
ISBN: 1258381834 ISBN-13(EAN): 9781258381837
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Автор: Markel Mike
Название: Three-Ways: A Detectives Seagate and Miner Mystery
ISBN: 0692228675 ISBN-13(EAN): 9780692228678
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Цена: 2240.00 р.
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