On a vertical photograph of flat terrain, section corners, which are a nominal 1-mi apart, appear a distance d apart. If the camera focal length is f, compute flying height above average ground in feet for the following data: Part A d = 3.319 in.; f = 3-1/2 in. Express your answer in feet to four significant figures. H = Submit ▾ Part B H = VAΣo↓ vec 6 d = 68.14 mm; f = 156.4 mm Express your answer in feet to five significant figures. Submit Request Answer 17| ΑΣΦ AΣo↓↑vec Request Answer p ? ? ft ft

On a vertical photograph of flat terrain, section corners, which are a nominal 1-mi apart, appear a distance d apart. If the camera focal length is f, compute flying height above average ground in feet for the following data: Part A d = 3.319 in.; f = 3-1/2 in. Express your answer in feet to four significant figures. H = Submit ▾ Part B H = VAΣo↓ vec 6 d = 68.14 mm; f = 156.4 mm Express your answer in feet to five significant figures. Submit Request Answer 17| ΑΣΦ AΣo↓↑vec Request Answer p ? ? ft ft

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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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.

Question

On a vertical photograph of flat terrain, section corners, which are a nominal 1-mi apart,
appear a distance d apart. If the camera focal length is f, compute flying height above
average ground in feet for the following data:
Part A
d = 3.319 in.; f = 3-1/2 in.
Express your answer in feet to four significant figures.
H =
Submit
Part B
15| ΑΣΦ
H =
Request Answer
d = 68.14 mm; f = 156.4 mm
Express your answer in feet to five significant figures.
Submit
vec 5
IVE ΑΣΦ41 | vec
Request Answer
?
?
ft
ft

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