Answered: What is the aeroplane flying height to…

What is the aeroplane flying height to obtain the average scale of the photograph equal to 1/7200? (Ground surface elevations vary from 160 m to 430 m and focal length of the camera lens is 153 mm)

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter14: Highway Surveys And Location

Section: Chapter Questions

Problem 12P

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Concept explainers

Photogrammetry

Photogrammetry is a technology of taking measurements of physical objects present in the environment, using photographs. It includes the process of recording and analyzing a three-dimension image in the two-dimension form. Photogrammetry was invented around 150 years ago in 1851 by Aimé Laussedat, he was also known as the father of photogrammetry, but this method was not in use until 50 years after its invention. This method was first used in Germany by Dr. Albrecht Meydenbauer in 1893 who was the director of the Royal Prussian Photogrammetric institute founded by him.

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What is the aeroplane flying height to obtain the average scale of the photograph equal to 1/7200? (Ground surface elevations vary from 160 m to 430 m and focal length of the camera lens is 153 mm)

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Problem 3.
Aerial photography was taken at a flying height of 1250m above average terrain. If the camera focal plane dimensions were 23cm by 23cm, the focal length is 153 mm, what is the ground distance? The spacing between adjacent flight lines is 1370 m, what is the percent side lap?