Gps Modeling And Analysis Summary Of Research
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Gps Modeling And Analysis Summary Of Research
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06
Gps Modeling And Analysis Summary Of Research written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06 with categories.
This report outlines the algorithms developed at the Colorado Center for Astrodynamics Research to model yaw and predict the axial ratio as measured from a ground station. The algorithms are implemented in a collection of Matlab functions and scripts that read certain user input, such as ground station coordinates, the UTC time, and the desired GPS (Global Positioning System) satellites, and compute the above-mentioned parameters. The position information for the GPS satellites is obtained from Yuma almanac files corresponding to the prescribed date. The results are displayed graphically through time histories and azimuth-elevation plots.Axelrad, Penina and Reeh, LisaGoddard Space Flight CenterALGORITHMS; GLOBAL POSITIONING SYSTEM; NAVIGATION SATELLITES; POSITIONING; AZIMUTH; COORDINATES; YAW
Modeling Global Positioning System Effects In The Tlc Nlc Model
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Author : Patrick D. Allen
language : en
Publisher: Rand Corporation
Release Date : 1994
Modeling Global Positioning System Effects In The Tlc Nlc Model written by Patrick D. Allen and has been published by Rand Corporation this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Political Science categories.
Use of the Global Positioning System (GPS) can enhance the navigation of combat platforms and the guidance of munitions. This report presents a design for incorporating GPS into RAND's theater-level combat or nonlinear combat (TLC/NLC) model, which is used for policy analysis of military operations. The author's design looks first at GPS coverage, i.e., how position is located using one or more GPS satellites. Next, the author considers factors limiting the access of GPS-equipped assets to the system. Third, the author examines the benefits to assets so equipped: improved self-location accuracy, which enhances navigation and reduces fratricide; improved target location accuracy; and improved targeting of stand-off munitions. The final consideration is countermeasures against threats to GPS transmitters, receivers, and signals.
Research And Technology Objectives And Plans Summary Rtops
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Author :
language : en
Publisher:
Release Date : 1993
Research And Technology Objectives And Plans Summary Rtops written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Aeronautics categories.
Observation Model And Parameter Partials For The Jpl Geodetic Gps Modeling Software Gpsomc
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2018-10-25
Observation Model And Parameter Partials For The Jpl Geodetic Gps Modeling Software Gpsomc written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-25 with Science categories.
The physical models employed in GPSOMC and the modeling module of the GIPSY software system developed at JPL for analysis of geodetic Global Positioning Satellite (GPS) measurements are described. Details of the various contributions to range and phase observables are given, as well as the partial derivatives of the observed quantities with respect to model parameters. A glossary of parameters is provided to enable persons doing data analysis to identify quantities in the current report with their counterparts in the computer programs. There are no basic model revisions, with the exceptions of an improved ocean loading model and some new options for handling clock parametrization. Such misprints as were discovered were corrected. Further revisions include modeling improvements and assurances that the model description is in accord with the current software. Sovers, O. J. and Border, J. S. Jet Propulsion Laboratory
Gps Stochastic Modelling
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Author : Xiaoguang Luo
language : en
Publisher: Springer
Release Date : 2016-09-27
Gps Stochastic Modelling written by Xiaoguang Luo and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-27 with Technology & Engineering categories.
Global Navigation Satellite Systems (GNSS), such as GPS, have become an efficient, reliable and standard tool for a wide range of applications. However, when processing GNSS data, the stochastic model characterising the precision of observations and the correlations between them is usually simplified and incomplete, leading to overly optimistic accuracy estimates. This work extends the stochastic model using signal-to-noise ratio (SNR) measurements and time series analysis of observation residuals. The proposed SNR-based observation weighting model significantly improves the results of GPS data analysis, while the temporal correlation of GPS observation noise can be efficiently described by means of autoregressive moving average (ARMA) processes. Furthermore, this work includes an up-to-date overview of the GNSS error effects and a comprehensive description of various mathematical methods.
Observation Model And Parameter Partials For The Jpl Geodetic Gps Modeling Software Gpsomc
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FREE 30 Days
Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-09
Observation Model And Parameter Partials For The Jpl Geodetic Gps Modeling Software Gpsomc written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-09 with categories.
The physical models employed in GPSOMC, the modeling module of the GIPSY software system developed at JPL for analysis of geodetic Global Positioning Satellite (GPS) measurements are described. Details of the various contributions to range and phase observables are given, as well as the partial derivatives of the observed quantities with respect to model parameters. A glossary of parameters is provided to enable persons doing data analysis to identify quantities with their counterparts in the computer programs. The present version is the second revision of the original document which it supersedes. The modeling is expanded to provide the option of using Cartesian station coordinates; parameters for the time rates of change of universal time and polar motion are also introduced. Sovers, O. J. Jet Propulsion Laboratory NAS7-918...
Applications Of Gps For Surveying And Other Positioning Needs In Departments Of Transportation
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Author : Robert J. Czerniak
language : en
Publisher: Transportation Research Board
Release Date : 1998
Applications Of Gps For Surveying And Other Positioning Needs In Departments Of Transportation written by Robert J. Czerniak and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Technology & Engineering categories.
This synthesis will be of interest to both administrative and technical personnel in departments of transportation (DOTs), especially in the areas of surveying, mapping, transportation planning, environmental impact assessment, design, construction control, maintenance, operations, vehicle location, and other functions that require accurate location data. This report will be useful for intermodal transportation analyses and for measurement and positioning data for inventories and geographic information systems (GIS). It can also be useful to suppliers and developers of Global Positioning System (GPS) equipment. This report of the Transportation Research Board presents a description of GPS, the major components, basic geodesy principles, how GPS functions, and how it can be applicable to the data and analysis requirements of transportation agencies. The anticipated cost effectiveness of GPS in terms of personnel, equipment, and time as related to the improved accuracies to be derived from GPS applications are described. Current and more advanced applications of GPS by DOTs to different transportation modes are presented. The report also includes a glossary of terms and a listing of GPS information sources.
Fundamentals Of Spatial Analysis And Modelling
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Author : Jay Gao
language : en
Publisher: CRC Press
Release Date : 2021-12-15
Fundamentals Of Spatial Analysis And Modelling written by Jay Gao and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-12-15 with Technology & Engineering categories.
This textbook provides comprehensive and in-depth explanations of all topics related to spatial analysis and spatiotemporal simulation, including how spatial data are acquired, represented digitally, and spatially aggregated. Also features the nature of space and how it is measured. Descriptive, explanatory, and inferential analyses are covered for point, line, and area data. It captures the latest developments in spatiotemporal simulation with cellular automata and agent-based modelling, and through practical examples discusses how spatial analysis and modelling can be implemented in different computing platforms. A much-needed textbook for a course at upper undergraduate and postgraduate levels.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1989
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Aeronautics categories.
Faa Nasa Joint University Program For Air Transportation Research 1992 1993
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Author :
language : en
Publisher:
Release Date : 1994
Faa Nasa Joint University Program For Air Transportation Research 1992 1993 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aeronautics, Commercial categories.