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?
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- The vertical photograph was exposed with a 60 cm focal length camera at a flying height of 3,000 meters above datum. What is the photo scale at point a if the elevation of point A on the ground is 200 m above datum?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)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
- The vertical photograph was exposed with a 50 cm focal length camera at a flying height of 5,000 meters above datum. If the photo scale is 1 : 2500. What is the elevation of the point from the ground surface?A distance ab on a vertical photograph is 65.0 mm, and the corresponding ground distance AB is 1153 m. If the camera focal length is 153.19 mm, what is the flying height above the terrain upon which line AB is located?Images a, b, and c of ground points A, B, and C appear on a vertical photograph taken from a flying height of 2625 m above datum. A 153.16-mm-focal-length camera was used. Points A, B, and C have elevations of 407 m, 311 m, and 379 m above datum, respectively. Measured photo coordinates of the images are xa = –60.2 mm, ya = 47.3 mm, xb = 52.4 mm, yb = 80.8 mm, xc = 94.1 mm, and yc = – 79.7 mm. Calculate the horizontal lengths of lines AB, BC, and AC and the area within triangle ABC in hectares.
- There are two points, A and B: elevations above datum are hA=1760ft and hB=1425ft Images a and b on a vertical photograph have photo coordinates xa=2.95in., ya=2.32in., xb=−1.64in., and yb=−2.66in. The camera focal length was 152.4mm and the flying height above datum 7700ft. An image c of a third point C appears. Its elevation hC=1455ft and its photo coordinates are xc=3.20in. and yc=−2.66in Using EXCEL Calculate Angle A Calculate Angle B Calculate Angle CShow complete solution The photo distance between two image points a and b on a vertical photograph is 10.10cm and the corresponding ground distance AB is 1490m. What is the photographic scale at the elevation of the ground line?A line AB on the photograph measures 10.24 cm for which focal length was 15 cm, the corresponding line on the map measures 2.56 cm in a scale of 1/55000. The terrain has an average elevation of 215 m above MSL. Calculate the flight height of the aircraft above MSL when the photograph was taken.
- The scale of the photograph is 10cm = 100m. The photograph size is 23cmx23cm determine the number of photographs required to cover an area of 15kmx10 km, if the longitudinal overlap is 60% and side overlap is 720%.) On a truly vertical aerial photograph, whose focal length is 100.00 mm, the base ofthe corner of a vertical building appears 50.00 mm from the principal point. The top of thesame corner of the building is measured to the 51.00 mm from the principal point. It has 2been determined that the flight altitude of the camera above the ground at the base of thebuilding is 8000.0 ft. What is the height of the building?A vertical photograph is taken at an altitude of 1200 m above mean sea level' (ams.l.) of a terrain Lying at an elevation of 80 m (ams.l.) The focal Length of camera is 15 cm. The scale of the photograph will be nearly