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: P d E

Q: The vertical photograph was exposed with a 50 cm focal length camera at a flying height of 5,000…

A: Focal length f=50 cm = 0.50 m, Flying height H=5000 m, Photo scale S=1:2500, To Find- The elevation…

Q: What is the aeroplane flying height to obtain the average scale of the photograph equal to 1/7200?…

A: Given data: The average scale of the photograph, S = 1/7200 Ground surface elevations vary 160 m to…

Q: A distance ab on a vertical photograph is 65.0 mm, and the corresponding ground distance AB is 1153…

A: Given data, Photo distance = 65 mm Ground distance = 1153 m Camera focal length = 153.19 mm Flying…

Q: What error results if the curvature and refraction correction is neglected in trigonometric leveling…

A: The expression for combined correction is given by- Cc=-0.0673d2 Where d is in km In terms of feet…

Q: QUESTION5 Given the following unadjusted 4 angles from a traverse, calculate the adjustment per…

A:

Q: If a plus sight of 1.097 m is taken on BM A, elevation 305.348 m, and a minus sight of 0.832 m is…

A: Given: The back sight on A is 1.097 m. The elevation is 305.348 m. The foresight on X is 0.832 m.

Q: In trignometric leveling, correction for curvature and refraction is negligible if O the slope…

A:

Q: An instrument was set up over station 1, and sights between points A and C were taken. The…

A:

Q: What error results if the curvature and refraction correction is neglected in trigonometric leveling…

A: Given :

Q: Hn plane surveying (a) the curvature of the earth is taken into consideration (b) the curvature of…

A: To Determine The Definition of the given type of surveying (Plane surveying).

Q: Intervening terrain obstructs the line of sight so only the top of a 6-ft long pole can be seen on a…

A: Given data:The top of a 6-ft long pole can be seen on a 330-ft sight.For 1 foot vertical deviation…

Q: Plot a graph of vertical angles from 0° to 60° versus the error in horizontal angle measurement due…

A: Answer We know that Error due to Instrument mislevelling is given by ∈= fd*u*tanv ∈= error in…

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.