Author: Helmut Moritz
Publisher:
ISBN:
Category : Boundary value problems
Languages : en
Pages : 107
Book Description
Linear Solutions of the Geodetic Boundary-value Problem
Author: Helmut Moritz
Publisher:
ISBN:
Category : Boundary value problems
Languages : en
Pages : 107
Book Description
Publisher:
ISBN:
Category : Boundary value problems
Languages : en
Pages : 107
Book Description
Geodetic Boundary Value Problem: the Equivalence between Molodensky’s and Helmert’s Solutions
Author: Fernando Sansò
Publisher: Springer
ISBN: 3319463586
Category : Science
Languages : en
Pages : 83
Book Description
This book offers a new approach to interpreting the geodetic boundary value problem, successfully obtaining the solutions of the Molodensky and Stokes boundary value problems (BVPs) with the help of downward continuation (DC) based methods. Although DC is known to be an improperly posed operation, classical methods seem to provide numerically sensible results, and therefore it can be concluded that such classical methods must in fact be manifestations of different, mathematically sound approaches. Here, the authors first prove the equivalence of Molodensky’s and Stoke's approaches with Helmert’s reduction in terms of both BVP formulation and BVP solutions by means of the DC method. They then go on to show that this is not merely a downward continuation operation, and provide more rigorous interpretations of the DC approach as a change of boundary approach and as a pseudo BVP solution approach.
Publisher: Springer
ISBN: 3319463586
Category : Science
Languages : en
Pages : 83
Book Description
This book offers a new approach to interpreting the geodetic boundary value problem, successfully obtaining the solutions of the Molodensky and Stokes boundary value problems (BVPs) with the help of downward continuation (DC) based methods. Although DC is known to be an improperly posed operation, classical methods seem to provide numerically sensible results, and therefore it can be concluded that such classical methods must in fact be manifestations of different, mathematically sound approaches. Here, the authors first prove the equivalence of Molodensky’s and Stoke's approaches with Helmert’s reduction in terms of both BVP formulation and BVP solutions by means of the DC method. They then go on to show that this is not merely a downward continuation operation, and provide more rigorous interpretations of the DC approach as a change of boundary approach and as a pseudo BVP solution approach.
Linear solutions of the geodetic boundaryvalue problem
Author: Helmut Moritz
Publisher:
ISBN:
Category :
Languages : de
Pages : 107
Book Description
Publisher:
ISBN:
Category :
Languages : de
Pages : 107
Book Description
Numerical Solution of Two Point Boundary Value Problems
Author: Herbert B. Keller
Publisher: SIAM
ISBN: 9781611970449
Category : Mathematics
Languages : en
Pages : 69
Book Description
Lectures on a unified theory of and practical procedures for the numerical solution of very general classes of linear and nonlinear two point boundary-value problems.
Publisher: SIAM
ISBN: 9781611970449
Category : Mathematics
Languages : en
Pages : 69
Book Description
Lectures on a unified theory of and practical procedures for the numerical solution of very general classes of linear and nonlinear two point boundary-value problems.
Model Computations for Different Solutions of the Geodetic Boundary-value Problem
Author: Joseph E. Gross
Publisher:
ISBN:
Category : Aerial triangulation
Languages : en
Pages : 510
Book Description
Publisher:
ISBN:
Category : Aerial triangulation
Languages : en
Pages : 510
Book Description
The Geodetic Boundary Value Problem in Two Dimensions and Its Iterative Solution
Author: Martin van Gelderen
Publisher:
ISBN: 9789061322412
Category : Boundary value problems
Languages : en
Pages : 160
Book Description
Publisher:
ISBN: 9789061322412
Category : Boundary value problems
Languages : en
Pages : 160
Book Description
Model Computations for Different Solutions of the Geodetic Boundary-value Problem
Author: Karl-Rudolf Koch
Publisher:
ISBN:
Category : Boundary value problems
Languages : en
Pages : 43
Book Description
To solve the boundary-value problem of physical geodesy, the perturbing potential is usually expressed by the potential of a simple layer. By introducing this expression into the boundary condition, Molodensky's basic integral equation is obtained; the solution of which enables us to compute the perturbing potential and its first derivative. To check the results of this method, Green's formula can be used. After transforming this formula and its derivative by a method, due to Molodensky, a linear integral equation for the disturbing potential is obtained. With the solutions of this integral equation, the first derivative of the disturbing potential can be computed from the transformed derivative of Green's formula. For a model consisting of a cone on a plane the basic integral equation and the integral equation of Green's formula are solved by successive approximation with a computer. The solution of the basic integral equation is also obtained by Molodensky's method. These three solutions are compared for different inclination angles of the surface of the cone. The results agree very well for small inclination angles, but the approximations don't converge for greater inclination angles. The reason has to be sought in the errors of numerical integration, by which the integration over the surface of the model is solved. (Author).
Publisher:
ISBN:
Category : Boundary value problems
Languages : en
Pages : 43
Book Description
To solve the boundary-value problem of physical geodesy, the perturbing potential is usually expressed by the potential of a simple layer. By introducing this expression into the boundary condition, Molodensky's basic integral equation is obtained; the solution of which enables us to compute the perturbing potential and its first derivative. To check the results of this method, Green's formula can be used. After transforming this formula and its derivative by a method, due to Molodensky, a linear integral equation for the disturbing potential is obtained. With the solutions of this integral equation, the first derivative of the disturbing potential can be computed from the transformed derivative of Green's formula. For a model consisting of a cone on a plane the basic integral equation and the integral equation of Green's formula are solved by successive approximation with a computer. The solution of the basic integral equation is also obtained by Molodensky's method. These three solutions are compared for different inclination angles of the surface of the cone. The results agree very well for small inclination angles, but the approximations don't converge for greater inclination angles. The reason has to be sought in the errors of numerical integration, by which the integration over the surface of the model is solved. (Author).
Geodetic Boundary Value Problems in View of the One Centimeter Geoid
Author: Fernando Sansò
Publisher: Springer
ISBN:
Category : Mathematics
Languages : en
Pages : 620
Book Description
The precise determination of the figure of the earth and its exterior gravitational field requires the solution of the geodetic boundary value problem (GBVP). Recently, a whole series of new measurement techniques has became available, in particular air- and spaceborne methods. They will make its solution much more complete and accurate and will contribute to a better understanding of ocean circulation and of the earth's interior. The book consists of contributions from leading scientists presented at an international summer school. It covers all aspects of the solution of the GBVP, from a mathematical basis via geodetic modeling to its relationship with advanced measurements. It provides three foundations to determine the geoid at a 1-cm precision level.
Publisher: Springer
ISBN:
Category : Mathematics
Languages : en
Pages : 620
Book Description
The precise determination of the figure of the earth and its exterior gravitational field requires the solution of the geodetic boundary value problem (GBVP). Recently, a whole series of new measurement techniques has became available, in particular air- and spaceborne methods. They will make its solution much more complete and accurate and will contribute to a better understanding of ocean circulation and of the earth's interior. The book consists of contributions from leading scientists presented at an international summer school. It covers all aspects of the solution of the GBVP, from a mathematical basis via geodetic modeling to its relationship with advanced measurements. It provides three foundations to determine the geoid at a 1-cm precision level.
Geodetic Boundary Value Problem
Author: Fernando Sansò
Publisher:
ISBN: 9783319463599
Category : Physical geography
Languages : en
Pages : 81
Book Description
Publisher:
ISBN: 9783319463599
Category : Physical geography
Languages : en
Pages : 81
Book Description
The Geodetic Boundary Value Problem in Two Dimensions and Its Iterative Solution
Author: Martin van Gelderen
Publisher:
ISBN: 9789061322412
Category : Boundary value problems
Languages : en
Pages : 143
Book Description
Publisher:
ISBN: 9789061322412
Category : Boundary value problems
Languages : en
Pages : 143
Book Description