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The Navigators: A History of NASA's Deep-Space Navigation by Dr Andrew J Butrica (Paperback / softback, 2014)

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This is the story behind NASA's successful exploration of the solar system. For a half century, NASA has sent one probe after ather into space, achieving scientific and techlogical successes along the way and adding to humanity's kwledge of the solar system. NASA has reaped these great rewards thanks to a small investment in deep-space navigation. With rare exceptions, navigation's great achievements-and scientific accomplishments-have gone ubserved. The failures of the Mars Climate Orbiter and Mars Polar Lander shed navigation (wrongly) in a negative light. Yet, the indispensable role of navigators behind NASA's many successes over the past half century has t come to light-until w. The institutional home of deep-space navigation is the NASA's Jet Propulsion Laboratory. JPL navigation originated long before it became part of NASA, when the lab developed and tested missiles for the nation's military space effort. From the start, deep-space navigation was an endeavor built on science and mathematics and dependent on the Deep Space Network for tracking spacecraft and on digital computers and software for processing data. Navigation is multidisciplinary. It involves astromy and radio astromy, geodesy and geophysics, cartography and meteorology, iospheric physics and radio science. Navigators interact with a paply of institutions, whether the Bureau International de l'Heure, the International Polar Motion Service, the International Union of Geodesy and Geophysics, and the International Astromical Union. JPL navigation started as a consumer of Naval Observatory data, practices, and ephemerides, but in the 1970s became the source of ephemerides, constants, models, and ephemerides for the world's almanac offices. Navigators have been project scientists on many NASA missions, performing experiments in celestial mechanics and gravitational fields, undertaking radio occultations, and testing Einstein's General Theory of Relativity. They also have made a number of memorable scientific discoveries: mascons on the Moon and Mars, volcanism on Io, and over a dozen satellites of the outer planets. The nature of deep-space navigation began to change with the introduction of optical navigation, which uses a probes science camera and telemetry to determine its position relative to a planet, moon, or asteroid. Deep-space navigation began-and remains-an activity carried out entirely on Earth. Radio signals from the Deep Space Network constituted the only information processed. Optical navigation began to move some of the process-and equipment-to spacecraft. At first, image processing was a labor-intensive and computer-intensive effort. Software improvements and advances in spacecraft computers paved the way for automous navigation, which transferred many basic navigation processes to the onboard computer: estimating trajectories, planning and executing imaging, and analyzing pictures. The most recent evolutionary stage has been the merger of this automous software with spacecraft guidance and control functions.

Product Identifiers

Publisher
CreateSpace
ISBN-10
1492777838
ISBN-13
9781492777830
eBay Product ID (ePID)
214311612

Product Key Features

Author
Dr Andrew J Butrica
Format
Paperback / Softback, Trade Paperback (US) ,Unsewn / Adhesive Bound
Language
English
Subject
Popular Science
Type
Textbook

Additional Product Features

Content Note
Black & White Illustrations
Date of Publication
25/04/2014
Country of Publication
United States

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The Navigators: A History of NASA's Deep-Space Navigation by Dr Andrew J Butrica (Paperback / softback, 2014)

About this product

Product Information

Product Identifiers

Product Key Features

Additional Product Features

Best Selling in Adult Learning & University

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Save on Adult Learning & University

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