Transcription of REMOTE SENSING AND GIS (A70140)
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1 LECTURE NOTES ON REMOTE SENSING AND GIS (A70140) IV B. Tech I Semester (JNTUH-R15) By Mr. Y. Ravi Kumar Assistant Professor DEPARTMENT OF CIVIL ENGINEERING INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) DUNDIGAL, HYDERABAD - 500 043 2 UNIT-1 PHOTOGRAMMETRY Photogrammetry is the science of making measurements from photographs, especially for recovering the exact positions of surface points. Moreover, it may be used to recover the motion pathways of designated reference points located on any moving object, on its components and in the immediately adjacent environment. Photogrammetry may employ high-speed imaging and REMOTE SENSING in order to detect, measure and record complex 2-D and 3-D motion fields (see also sonar, radar, lidar etc.).
Solar energy reflected by the targets at specific wavelength bands are recorded using sensors on board air-borne or space borne platforms. In order to ensure ample signal strength received at the sensor, wavelength / energy bands capable of traversing through the atmosphere, ... Landsat satellites, Indian remote sensing (IRS) satellites, IKONOS ...
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