The maximum error in radial line assumption, is

More Questions from Advanced Surveying

• Solar declination and seasons — identify the event with maximum north declination The Sun's apparent north declination attains its maximum positive value once each year. What is this position/event called in positional astronomy and surveying practice?
• Photogrammetry — name of the orthogonal projection of the perspective centre on a tilted photograph In a tilted aerial photograph, what is the point called that is obtained by dropping a perpendicular from the camera perspective centre to the photograph plane (i.e., the orthogonal projection of the perspective centre)?
• Triangulation terminology — station with no direct observations In a triangulation series, what is the station called where no angles are actually observed, yet the station is included in computations using adjoining observed angles?
• Aerial survey line planning — spacing between parallel flight lines on map An area 30 km wide is to be covered by 16 parallel flight lines run perpendicular to the width. What will be the spacing between adjacent flight lines as measured on a photographic map of scale 1:50,000 (assume first and last lines lie along the two edges so spacing = total width/(16 − 1))?
• Homologous points in photogrammetry — identifying corresponding pairs Which of the following pairs are homologous points (i.e., correspond to the same object point in the ground–image relationship)?
• Apparent motion of Polaris — direction at eastern elongation At the instant of eastern elongation in its small diurnal circle around the north celestial pole, in which direction does the pole star (Polaris) appear to move?
• Aerial Photogrammetry – Idealized projection model In the context of photogrammetry, an aerial photograph (captured from a finite flying height with a lens of focal length f) is best idealized as which type of geometric projection for mapping and measurement purposes?
• Camera rotations in aerial photography – name the rotation about the vertical (optical) axis During exposure, when the camera undergoes a rotation about its vertical axis (through the perspective center), what is this motion commonly called in photogrammetry?
• Astronomy for surveying – condition for a star to culminate at the zenith In practical field astronomy, a star will culminate exactly at the zenith of an observing station if its declination has which relationship with the station’s latitude?
• Relief (height) displacement on vertical aerial photos – sign and special case For truly vertical aerial photographs, which set of statements about height displacement is correct regarding points above/below the datum and the point directly under the camera?

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