Author: James Honour St. ClairPublisher:
ISBN:
Category : Occultations
Languages : en
Pages : 126
Book Description
Geodetic Application of Occultations Observed at One Station
Author: James Honour St. ClairPublisher:
ISBN:
Category : Occultations
Languages : en
Pages : 126
Book Description
The Application of Occultations to Geodesy
Author: Soren W. HenriksenPublisher:
ISBN:
Category : Geodesy
Languages : en
Pages : 104
Book Description
Geodetic Positioning from Simultaneous Optical Observations of the ANNA 1-B Satellite
Author: Lyndon L. SheldonPublisher:
ISBN:
Category : Geodesy
Languages : en
Pages : 28
Book Description
Differential Geodesy
Author: Joseph ZundPublisher: Springer Science & Business Media
ISBN: 3642764967
Category : Science
Languages : en
Pages : 195
Book Description
Apart from Hotine's work on Mathematical Geodesy, several previously unpublished reports are collected in this monograph, complemented by extensive comments on these contributions and a complete bibliography of Hotine by the editor.
Radio Occultations Using Earth Satellites
Author: William G. MelbournePublisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 680
Book Description
the wave theory foundations of today's radio occultation techniques Forty years ago, the premier radio occultation problem was how to profile the atmosphere and radius of Mars using signals sent by the Mariner 4 spacecraft. Researchers then could rely on ray theory-based techniques for accurate analysis of the thin, uniform Martian atmosphere. Today's radio occultation challenges mostly involve communications platforms—and related data, instrument systems, and applications—in the Earth's own atmosphere. To deal with the density and complexity of this multilayered medium, an analytical framework that goes beyond ray theory is needed. Setting the cutting edge for the field, Radio Occultations Using Earth Satellites: A Wave Theory Treatment develops a purely wave-theoretic approach to occultation analysis. This approach yields more nuanced results than either ray or hybrid (ray/wave) methodologies offer, and proves suitable for the many variables at work in today's problems. This groundbreaking text provides: An introduction to the general theory of radio occultations Development of ray theory and scalar diffraction treatments of radio propagation processes Development of a wave theoretic treatment of the above wave propagation processes The correspondence between wave and ray theories A discussion of how to use a wave-theoretic approach to infer the refractive properties of the propagation medium from a time series set of observations of the propagated wave's phase and amplitude A comprehensive resource that clearly defines the latest topics and methodologies, Radio Occultations Using Earth Satellites is a must-have text for engineers, scientists, students, and managers in satellites communications, navigation, deep space and planetary exploration, aerospace, atmospheric science, physics, and engineering. The Deep Space Communications and Navigation Series is authored by scientists and engineers with extensive experience in astronautics, communications, and related fields. It lays the foundation for innovation in the areas of deep space navigation and communications by disseminating state-of-the-art knowledge in key technologies.
Geodetic Operations in the United States and in Other Areas Through International Cooperation, January 1, 1957 to December 31, 1959
Author: John Holman BrittainPublisher:
ISBN:
Category : Geodesy
Languages : en
Pages : 48
Book Description
Geodetic Operations in the United States
Author: U.S. Coast and Geodetic SurveyPublisher:
ISBN:
Category : Geodesy
Languages : en
Pages : 178
Book Description
Geodetic Operations in the United States and in Other Areas Through International Cooperation, January 1, 1963 to December 31, 1966
Author: John O. PhillipsPublisher:
ISBN:
Category : Geodesy
Languages : en
Pages : 44
Book Description
Observation of the Earth System from Space
Author: Jakob FluryPublisher: Springer Science & Business Media
ISBN: 3540295224
Category : Technology & Engineering
Languages : en
Pages : 484
Book Description
In the recent years, space-based observation methods have led to a subst- tially improved understanding of Earth system. Geodesy and geophysics are contributing to this development by measuring the temporal and spatial va- ations of the Earth’s shape, gravity ?eld, and magnetic ?eld, as well as at- sphere density. In the frame of the GermanR&D programmeGEOTECHNO- LOGIEN,researchprojectshavebeen launchedin2002relatedto the satellite missions CHAMP, GRACE and ESA’s planned mission GOCE, to comp- mentary terrestrial and airborne sensor systems and to consistent and stable high-precision global reference systems for satellite and other techniques. In the initial 3-year phase of the research programme (2002-2004), new gravity ?eld models have been computed from CHAMP and GRACE data which outperform previous models in accuracy by up to two orders of m- nitude for the long and medium wavelengths. A special highlight is the - termination of seasonal gravity variations caused by changes in continental water masses. For GOCE, to be launched in 2006, new gravity ?eld analysis methods are under development and integrated into the ESA processing s- tem. 200,000 GPS radio occultation pro?les, observed by CHAMP, have been processed on an operational basis. They represent new and excellent inf- mation on atmospheric refractivity, temperature and water vapor. These new developments require geodetic space techniques (such as VLBI, SLR, LLR, GPS) to be combined and synchronized as if being one global instrument.
Precise Geodetic Infrastructure
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309163293
Category : Science
Languages : en
Pages : 157
Book Description
Geodesy is the science of accurately measuring and understanding three fundamental properties of Earth: its geometric shape, its orientation in space, and its gravity field, as well as the changes of these properties with time. Over the past half century, the United States, in cooperation with international partners, has led the development of geodetic techniques and instrumentation. Geodetic observing systems provide a significant benefit to society in a wide array of military, research, civil, and commercial areas, including sea level change monitoring, autonomous navigation, tighter low flying routes for strategic aircraft, precision agriculture, civil surveying, earthquake monitoring, forest structural mapping and biomass estimation, and improved floodplain mapping. Recognizing the growing reliance of a wide range of scientific and societal endeavors on infrastructure for precise geodesy, and recognizing geodetic infrastructure as a shared national resource, this book provides an independent assessment of the benefits provided by geodetic observations and networks, as well as a plan for the future development and support of the infrastructure needed to meet the demand for increasingly greater precision. Precise Geodetic Infrastructure makes a series of focused recommendations for upgrading and improving specific elements of the infrastructure, for enhancing the role of the United States in international geodetic services, for evaluating the requirements for a geodetic workforce for the coming decades, and for providing national coordination and advocacy for the various agencies and organizations that contribute to the geodetic infrastructure.