Approximate geodetic distances
Download
1 / 19

APPROXIMATE GEODETIC DISTANCES - PowerPoint PPT Presentation


  • 115 Views
  • Uploaded on

APPROXIMATE GEODETIC DISTANCES. Objectives. After this lecture you will be able to: Calculate approximate azimuth and lengths of lines from Df and Dl . Calculate approximate Df and Dl from azimuth and lengths of lines. Lecture Outline. Introduction Approximate change in latitude

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' APPROXIMATE GEODETIC DISTANCES' - dionne


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Objectives
Objectives

After this lecture you will be able to:

  • Calculate approximate azimuth and lengths of lines from Df and Dl.

  • Calculate approximate Df and Dl from azimuth and lengths of lines.


Lecture outline
Lecture Outline

  • Introduction

  • Approximate change in latitude

  • Approximate change in longitude

  • Approximate length of a line

  • Example

  • Conclusion


Introduction
Introduction

  • Need to calculate approximate change in latitude and longitude from azimuth and distance

    • Estimate coordinates as a check

    • Seed accurate calculations

  • Also need approximate reverse calculation

    • Approximate direction and distance


Approx sphere
Approx  - Sphere

Sphere radius = R

l= Df . R


Approx spheroid

r2

Df

r1

Approx  - Spheroid

Spheroid

s= Df . rm


Approx spheroid1
Approx  - Spheroid


Approx spheroid2
Approx  - Spheroid


Approx
Approx 


Approx1
Approx 


Approx2
Approx 







Conclusion
Conclusion

You can now:

  • Calculate approximate azimuth and lengths of lines from Df and Dl.

  • Calculate approximate Df and Dl from azimuth and lengths of lines.


Self study
Self Study

  • Read appropriate module in study materials



ad