Survey Control Points: Compatibility and Verification

ISBN-13: 9783319284569 / Angielski / Miękka / 2016 / 118 str.

Gabriel Weiss; Erik Weiss; Roland Weiss

Opis

This work deals with the issue of geodetic network structures, i.e. methods of verifying the condition of existing geodetic controls in terms of their compatibility and thereby their applicability. The presented work addresses these problems only for geodetic controls on a local scale. This is a common surveying issue in a number of countries, especially where there are concerns about the quality of the structure and homogeneity of national spatial and triangulation networks. There is a need for verification, not only for the use of terrestrial methods of determination of points but also for other surveying technology, since all technology operates with a certain threshold accuracy and using physical marks located on an unstable earth surface as survey control points. Issues of the compatibility of points whose coordinates are defined as functions of time by specific equations with respect to basal positions of points at certain epochs (points in systems ITRS, ETRS and others) are not considered.

Spis treści

Table of Contents

1 Introduction

2 The Compatibility of Geodetic Control 

3 The Compatibility of 2D (Planimetric) Points 

3.1 Characteristics of Planimetric Points in Terms of Compatibility 

3.2 The emergence of incompatibility of points and its impact in the

creation of geodetic controls 

3.3 The Need for Verification of Compatibility of Survey Control Points

3.4 Indicators of Planimetric Compatibility of Points 

3.4.1 In General 

3.4.2 Types of Indicators 

3.4.3 The Internal Structure of Indicators 

3.4.4 Characteristics of I

ndicators 

3.4.5 Relations Between Ld and Cd Indicators 

3.5 Pre-information to Verify Planimetric Compatibility 

4 Compatibility of 1D (Height) Points 

4.1 Characteristics of Height Points in Terms of Compatibility

4.2 The Emergence of Incompatibility and its Effect in Height

Determination

4.3 Indicators of Height Incompatibility and Their Characteristics 

4.4 Pre-information to Verify the Height Compatibility 

5 The Verification of Compatibility of Planimetric Points 

5.1 In General

5.2 The Compatibility Verification with dC Indicators 

5.2.1 Strategies of Compatibility Verification 

5.2.2 Methods of Compatibility Verification 

5.3 The Compatibility Verification with dL Indicators

5.3.1 In General

5.3.2 The Verification of Compatibility of Points of Changes in

Lengths

5.3.3 The Verification of Compatibility of Points in Network Structure 

6 The Verification of Compatibility of Height Poi

nts

6.1 In General

6.2 Strategies of Verification of Altimetric Compatibility 

6.2.1 The Verification with full Pre-information

6.2.2 The Verification with Incomplete Pre-information 

6.3 Methods of Verification of Altimetric Compatibility 

6.3.1 Method of Height Congruency (Full Pre-information) 

6.3.2 Lenzmann-Heck's Method (Incomplete Pre-information)