{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lecture4_new - Lecture 4 Distance Measurement Measurement...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 4. Distance Measurement E Y D Eo, Yang Dam Eo Y. D., Department of Technology Fusion, copyright®
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Definition of Distance In traditional ground surveys, even though many angles may be read, the length of at least one line must be observed to supplement the angles in locating points. In plane surveying, the distance between two points means the horizontal distance. Distance between two positions on reference ellipsoid When the radius of the reference surface is 6370km, the arc distance of circle that transits positions on this spherical surface Distance measured horizontally Eo Y. D., Department of Technology Fusion, copyright®
Background image of page 2
Summary Traditional Distance Measurement 1. Pacing 2. Odometer readings 3. Optical rangefinders 4. Tacheometry (stadia) 5. Subtense bars 6 T i Electronic Distance Measurement (EDM) 6. Taping Satellite-supported Global Navigation Satellite Systems (GNSS) : most notably because of their range accuracy efficiency : most notably because of their range, accuracy, efficiency Photogrammetry Eo Y. D., Department of Technology Fusion, copyright®
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon