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http://dx.doi.org/10.7848/ksgpc.2014.32.4-1.363

Comparative Analysis of Focal Length Bias for Three Different Line Scanners  

Kim, Changjae (Department of Civil Engineering, Sangmyung University)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.32, no.4_1, 2014 , pp. 363-371 More about this Journal
Abstract
Most space-borne optical scanning systems adopt linear arrayconfigurations. The well-knownthree different types of space-borne sensors arealong-track line scanner, across-track linescanner, and three line scanner. To acquire accurate location information of an object on the ground withthose sensors, the exterior and interior orientation parameters are critical factors for both of space-borne and airborne missions. Since the imaging geometry of sensors mightchange time to time due to thermal influence, vibration, and wind, it is very important to analyze the Interior Orientation Parameters (IOP) effects on the ground. The experiments based on synthetic datasets arecarried out while the focal length biases are changing. Also, both high and low altitudes of the imagingsensor were applied. In case with the along-track line scanner, the focal length bias caused errors along the scanline direction. In the other case with the across-track one, the focal length bias caused errors alongthe scan line and vertical directions. Lastly, vertical errors were observed in the case ofthree-line scanner. Those results from this study will be able to provide the guideline for developing new linearsensors, so as for improving the accuracy of laboratory or in-flight sensor calibrations.
Keywords
Along-track Line Scanner; Across-track Line Scanner; Three-line Scanner; Focal Lengthbias;
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Times Cited By KSCI : 1  (Citation Analysis)
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