Aerial photography is to be taken of a tract of land that is X-mi square. Flying height will be H ft above average terrain, and the camera has focal length f. If the focal plane opening is 9 x 9 in., and minimum sidelap is 30%, how many flight lines will be needed to cover the tract for the data given below? ▼ Part A X = 8; H=4500 ft; f = 152.40 mm Express your answer as an integer. 9F 57 Submit ΑΣΦ vec Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining ?

Aerial photography is to be taken of a tract of land that is X-mi square. Flying height will be H ft above average terrain, and the camera has focal length f. If the focal plane opening is 9 x 9 in., and minimum sidelap is 30%, how many flight lines will be needed to cover the tract for the data given below? ▼ Part A X = 8; H=4500 ft; f = 152.40 mm Express your answer as an integer. 9F 57 Submit ΑΣΦ vec Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining ?

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 5P

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Aerial photography is to be taken of a tract of land that is X-mi square. Flying height will be H ft above average terrain, and the camera has focal length f. If the focal plane opening is 9 x 9 in., and minimum sidelap is 40%, how many flight lines will be needed to cover the tract for the data given below? X = 9; H = 4100 ft; f = 152.40 mm Express your answer as an integer. —| ΑΣΦ. 41 | vec 100 Pre ?
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
Aerial photography is to be taken of a tract of land that is X-mi square. Flying height will be H ft above average terrain, and the camera has focal length f. If the focal plane opening is 9 x 9 in., and minimum sidelap is 40%, how many flight lines will be needed to cover the tract for the data given below? X = 9; H = 4100 ft; f = 152.40 mm Express your answer as an integer. 195| ΑΣΦ ↓↑ vec ?
Q4/ Assume that a vertical photograph was taken at a flying height of 5000 m above sea level using a camera with a 152-mm-focal-length lens. (a) the photo scale at points A and B was 1:30000 and B was 1:25000. (a) Determine elevations of A and B ? (b) What ground distance corresponds to a 20.1-mm photo distance measured at each of these elevations.
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?
C) A 20-mile strip of terrain is to be photographed for highway mapping. The aerial camera to be used has a lens of focal length 12 in and takes 9×9 inches photographs. The ground elevation varies from a low of 800.00 ft to a high of 1050.00 ft above mean sea level. The plane has to make one flight line and the average width of the photographic coverage is to be 1650.00 ft. What will be the average scale of the photographs? What flying height, above mean sea level, should be used for this flight? If it is specified that the overlap (end lap) between photos be 60% and that 2 extra exposures be added at each end of the flight line, find how many photographs will be required.
A section line AB appears to be 10.16 cm on a photograph for which the focal length is 16 cm. The corresponding line measures 2.54 cm on a map, which is to a scale 1 The terrain has an average elevation of 200 m above mean sea level. The flying 50,000 altitude of the aircraft above mean sea level during photograph will be (a) 1800 m (c) 2200 m (b) 2000 m (d) 2400 m q22
An area of 10 km x 20 km is to be surveyed using aerial photogrammetry Average scale of photograph is 1:10,000 at ground elevation of 400 m above the datum. Focal length of camera used is 20cm and size of photographs are 23cm x 23cm. The speed of aircraft is 270 kmph. The forward lap in photographs is 70% and side lap is 30% Determine the flying height, exposure interval and number of photographs required to complete the survey.
Compare the scales of photography for the area recorded and the strip widths given by cameras A and B at the same flying heights. Camera A Camera B Format 180 mm x 180 mm 230 mm x 230 mm Focal length 210 mm 150 mm How many photographs would be taken by the camera A in covering a strip 16 km long at a flying height of 1350 m? The longitudinal overlap is 60%.
Calculate the flight height above average terrain that is required to obtain vertical photographs at an average scale of S' if the camera focal length is f for the following data: Part A S = 1:18, 000; f = 152.40 mm Express your answer in feet to three significant figures. H = Submit Part B H = 197| ΑΣΦ 41 Submit Request Answer S = 1 : 4800; f = 95.90 mm Express your answer in feet to three significant figures. |5| ΑΣΦΑ vec Request Answer vec www www ? ? ft ft
Determine the horizontal distance between two points A and B whose elevations above datum are hA = 1840 ft and hB = 1425 ft and whose images a and b on a vertical photograph have photo coordinates xa = 2.95 in., ya = 2.32 in., xb = -1.64 in., and yb = -2.66 in. The camera focal length was 152.4 mm and the flying height above datum 7900 ft . Express your answer in feet to four significant figures.
A vertical aerial photograph was taken from a flying height of 3200 meters above datum with a camera having a focal length of 210 mm. The highest, lowest and average terrain points appearing in the photograph ae 1730 meters, 995 meters and 1310 meters, respectively. (Note: The scale value should be in this kind of format, 1:250) 1. Calculate the maximum photographic scale| 2. Calculate the minimum photographic scale 3. Calculate the average photographic scale