An aircraft is flying at a ground speed of 200 km/h. The focal length of the camera is 200mm. The ground distance covered along the flight line b/w exposures is 2 km. The time interval b/w

Q: The standard deviation of taping a 30m distance is ±5mm. What is the total Error then for measuring…

A: Given data :- The standard deviation of taping a 30 m distance is ±5mm To determine the total error…

Q: A pole cast a shadow 15 m long when the angle of elevation of the sun is 63°. If the pole leans 15°…

A:

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: In the accompanying sketch, a vertical angle of -14°30' is read to a target 3.50 m above point M.…

A:

Q: IT IS DESIRED TO LAUNCH A FLIGHT MISSION FOR AN AREA 8 KM WIDE AND 16 KM LONG. THE AIRPLANE HAS A…

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Q: On a large lake without waves how far from shore is a sailboat when the top of it's 25' mast…

A: The distance from the observer view to the sailboat for a wave is given by:…

Q: Question 6 A road section of length 2km scale 16 cm on a vertical photograph. The focal length of…

A: Given: A road section of length = 2 km Scale on a vertical photograph = 16 cm Focal length, f = 320…

Q: Q- A 2500 m long line lying at an elevation of 400 m measures 12cm on a vertical photograph. The…

A: Given data- A 2500 m long line measures 12cm on a vertical photograph. Elevation h = 400 m, Focal…

Q: Determine the index error if a vertical angle alpha was measured below the horizontal as 23 deg 16…

A: ● As given in the question :- vertical angle below horizontal with direct position = 23 deg 16 min…

Q: Question The focal length of the object glass of a tacheometer is 200 mm, the distance between the…

A: Tacheometer surveying-Middle staff intercepts, s = 2 Spacing, i = 4 mmFocal length, f = 200 mm.The…

Q: A) The table below represents field measurements of horizontal angle using theodolite: Theodolite…

A: Theodolite Station Observed Station Telescope H.C.R Mean Bearing           B A D 21o 36'…

Q: For what purpose the photoionization detector is used?

A: - A Photoionization detector is a type of gas detector which measure volatile organic compounds and…

Q: B. Find the distance between the satellite and the receiver if the true time of transmission from…

A: Data given: True time of transmission = 0.00 s Time of reception = 0.0673799 Asked: Distance…

Q: For the shaded region, determine the moments of inertia about the x-, y- and polar axes.

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Q: From an instrument set up an object was observed at a distance of 5.4 km away. Neglecting the effect…

A:

Q: A vertical photograph is taken at an altitude of 1200 m above mean sea level of a terrain flying at…

A: Given data: Altitude, H = 1200 m Elevation, h = 80 m Focal length of camera, f = 15 cm = 0.15 m

Q: Photogrammetry Question 3: A tower appears in two successive photographs taken at an altitude of…

A: Given data- Altitude H=4000 m above the datum. Focal length of the camera f=160 mm, Parallax from…

Q: The stadia readings with horizontal sight on a vertical staff held 50 m from a tacheometer were…

A: Given that :- focal length = f = 25 cm Distance between the object glass and the vertical axis = 16…

Q: A drone is equipped with a small format digital camera that has an APS-H sensor (see image) and a…

A: Solution: Given data: f=13 mm =0.013mH=1500m

Q: A vertical photograph of a flat area having an average elevation of 250 m above mean sea level was…

A: Given data- Average elevation havg=250 mfocal length f=25 cmsection line AB 300 m appears 15 cm on…

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…

Q: A tower appears in two successive photographs taken at an altitude of 4000m above the datum. The…

A: Altitude H=4000 m above the datum.Focal length of the camera f=160 mm,Parallax from the top-Pt=72…

Q: What will be the corrected staff reading at a point A if the staff reading taken from an instrument…

A: Given data- Staff reading = 3.5 m, Distance D=2 km, To Find- The value of the corrected staff…

Q: A fishing vessel with a green light on its deck, 20.5m above the water, disappears from the sight of…

A:

Q: 1. Project the "profile plane" in the upper quadrant with the correct colors. (Image 1)  2. Make…

A: To Project the "profile plane" in the upper quadrant with the correct colors.and make an isometric…

Q: Question The focal length of the object glass of a tacheometer is 200 mm, the distance between the…

A: Tacheometer surveying-Middle staff intercepts, s = 2 Spacing, i = 4 mmFocal length, f = 200 mm.The…

Q: 1) Suppose that a drone is flying over a field as shown in Fig. 1 to capture images for its…

A: Given- h=50mf=28mmSensor size=24×36mm

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.