Study on the Trajectory Simulation of the Ballistic Missile

2013 ◽  
Vol 416-417 ◽  
pp. 1845-1850
Author(s):  
Hong Wang ◽  
Chuang Ming Tong ◽  
Jia Jia Sun
Keyword(s):  
Coordinate System ◽  
Trajectory Generation ◽  
Solution Process ◽  
Ballistic Missile ◽  
Trajectory Simulation ◽  
Motion Process ◽  
Geocentric Coordinate System

Based on the geocentric coordinate system, the object coordinate system as well as the theory of elliptic trajectory, it makes research and analysis of the ballistic-parameter-based trajectory generation method of the ballistic missile and, meanwhile, verifies the effectiveness and rationality of this method. It, under the assumed condition of elliptic trajectory, also researches the solution process of the ballistic parameters in the midcourse of the ballistic missile and, meanwhile, makes the simulation verification on the midcourse trajectory of the ballistic missile according to the radar sights variation relation in the object coordinate system during the motion process.

scholarly journals Updating of digital topographic maps in the new national spatial coordinate system: case Fergana valley in Uzbekistan

2021 ◽  
Vol 4 ◽  
pp. 1-5
Author(s):  
Dilbarkhon Fazilova ◽  
Hasan Magdiev
Keyword(s):  
Coordinate System ◽  
Spatial Data ◽  
Information Technologies ◽  
Satellite System ◽  
Topographic Maps ◽  
The North ◽  
New Information ◽  
Global Navigation Satellite ◽  
Geodetic Coordinate System ◽  
Geocentric Coordinate System

Abstract. The classical geodetic coordinate system (CS42) in Uzbekistan uses the Krasovsky ellipsoid. The implementation of new information technologies, such as the Global Navigation Satellite System, became the basis for the development of a new national open geocentric coordinate system. This paper describes the development of a distortion grid for transforming horizontal spatial data from the local geodetic datum CS42 to a geocentric datum WGS84 for 1:100000 scale maps of the Fergana Valley in Uzbekistan. A first version of the distortion grid file has been created for transforming between CS42 and WGS84 for the whole territory of the country. The significant influence of the longitudinal drift of the region has been confirmed. The grid was used to transform topographic maps at a scale of 1:100000 for the Fergana Valley. Changing the map datum has shifted the grid of coordinate systems by 70 m in the East and 7 m in the North.

Chinese Geodetic Coordinate System 2000 and its Comparison with WGS84

2014 ◽  
Vol 580-583 ◽  
pp. 2793-2796 ◽  
Author(s):  
Hou Pu Li ◽  
Shao Feng Bian ◽  
Zhong Mei Li
Keyword(s):  
Coordinate System ◽  
Normal Gravity ◽  
Three Dimensional ◽  
Vertical Gradient ◽  
Coordinate Systems ◽  
Present Measurement ◽  
Three Dimensional Coordinate ◽  
Geodetic Coordinate System ◽  
International Measurement ◽  
Geocentric Coordinate System

It is a general trend to adopt the geocentric coordinate system as a geodetic datum for the international measurement community. The definition and realization of Chinese geocentric three-dimensional coordinate system (CGCS2000) which has been employed since July 1st, 2008 were introduced in detail. The defining parameters and derived constants of the reference ellipsoid used were given. The comparison between CGCS2000 and WGS84 was carried out. The differences of geodetic coordinates of a point between the two coordinate systems, normal gravity and vertical gradient of normal gravity on the two ellipsoids caused by the change of the flattening of the ellipsoid were analyzed. The results show that these differences could be neglected in view of present measurement accuracies.

Geocentric Coordinate Systems and Actual Problems of Modernization of the State Geodetic Network

2018 ◽  
Vol 931 ◽  
pp. 687-691
Author(s):  
Anastasia E. Dudnik ◽  
Oksana V. Germak ◽  
Maksim G. Govorukhin ◽  
Galina K. Tupoleva
Keyword(s):  
Coordinate System ◽  
Russian Federation ◽  
Geodetic Network ◽  
The State ◽  
Coordinate Systems ◽  
The Russian Federation ◽  
Geodetic Coordinate System ◽  
Geocentric Coordinate System

The article describes the state of the geocentric coordinate system of the Russian Federation. Current problems of the geodetic coordinate system are described, and a method for solving this problem is proposed.

Reference Ellipsoid Misalignment, Deflection Components and Geodetic Azimuth

1985 ◽  
Vol 39 (2) ◽  
pp. 123-130 ◽  
Author(s):  
Petr Vaníček ◽  
Galo Carrera
Keyword(s):  
Coordinate System ◽  
Geodetic Network ◽  
Reference Ellipsoid ◽  
Coordinate Systems ◽  
Misalignment Effect ◽  
Terrestrial System ◽  
The Earth ◽  
Geocentric Coordinate System

Whichever way the geodetic reference ellipsoid, used as a horizontal datum, is oriented within the earth it is theoretically never exactly aligned with the geocentric coordinate system (called here Conventional Terrestrial System). It is then important to know just how much the misalignment affects the pertinent geodetic quantities in the horizontal geodetic network: the azimuth and the deflection components. The misalignment effect on these geodetic quantities must be accounted for to maintain the consistency of all the involved coordinate systems and transformations between them.

The North American Redefinition in Perspective

1974 ◽  
Vol 28 (5) ◽  
pp. 745-749
Author(s):  
Angus C. Hamilton
Keyword(s):  
Coordinate System ◽  
North American ◽  
Basic Science ◽  
Engineering Application ◽  
Popular Support ◽  
The North ◽  
Best Fitting ◽  
Geocentric Coordinate System

The redefinition is an engineering application of the pure or basic science accomplishments in geodesy since 1927. Assuming that a geocentric coordinate system is adopted, it will mark the end of the era of best-fitting regional or continental surfaces and the advent of an era of one-world spheroids. To ensure that the resources necessary to see it through become available, it is essential that popular support for redefinition be forthcoming from users of the redefined coordinates, such as provincial/state and urban governments. The confusion that comes with any change in coordinates will be minimized if the redefinition is completed so that redefined plane coordinates will be available when the conversion to metric units takes place.

GNSS network of Uzbekistan: achievements, prospects and challenges

2021 ◽  
Author(s):  
Dilbarkhon Fazilova ◽  
Hasan Magdiev ◽  
Lola Sichugova
Keyword(s):  
Coordinate System ◽  
Geodetic Network ◽  
Local Area ◽  
Geopotential Models ◽  
The Creation ◽  
The Republic ◽  
Gnss Network ◽  
Gnss Measurements ◽  
High Degree ◽  
Geocentric Coordinate System

<p>In 2005, a governmental program for the creation of a geodetic network (SGN) based on GNSS measurements started in the Republic of Uzbekistan. Its main goal is to provide a modern, reliable and accurate geocentric coordinate system for land management, construction, environmental protection and the creation of a spatial database for various sectors of the economy. The SGN established in the country based on the availability of infrastructure and geographical needs and therefore, it does not cover the entire country. SGN consists three levels: reference geodetic points (RGP), high precision satellite geodetic network (SGN-0) points and first class satellite geodetic network (SGN-1) points. Since 2018, a network of 50 Continuously Operating Reference Stations (CORS) has also been developing. The installation of more than 200 GNSS stations in the period from 2005 to 2020 allows the country's scientific community to solve a number of practical geodetic problems. Among them implementation global ITRS system into local area for transition to new national geocentric coordinate system, quasi-geoid determination based on high degree Global Geopotential Models (such as EGM2008, EIGEN-6C4, GECO) and local geodynamic research for stress field modeling.</p>

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