Size of photograph
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:(b) An area of 150 km x 105 km is to be surveyed using aerial photogrammetry with the
data given below:
Size of photograph = 23 cm x 23 cm
Average scale of photograph = 1:25000
Average elevation of terrain = 335 m
Longitudinal overlap = 65%
Side overlap = 28%
Ground speed of aircraft = 270 km/hr
Focal length of camera = 200 mm
Least count of intervalometer = 0.5 sec
Determine the:
(i) Height of flight
(ii) Spacing of flight lines
(iii) Ground exposure distance and exposure interval
(iv) Number of photographs required to cover complete area.
Please solve all four
questions, with explanation
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