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.)
8. Characteristics of Real Remote Sensing Systems Real remote sensing systems employed in general operation and utility have many shortcomings when compared with an ideal system explained above. i. Energy Source: The energy sources for real systems are usually non-uniform over various wavelengths and also vary with time and space.
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