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8 August 2003 Side oblique real-time orthophotography with the 9Kx9K digital framing camera
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Abstract
BAE SYSTEMS has reported on a new framing camera incorporating an ultra high resolution CCD detector array comprised of 9,216 x 9,216 pixels fabricated on one silicon wafer. The detector array features a 1:2 frame-per-second readout capable of stereo imagery with Nyquist resolution of 57 lp/mm from high velocity, low altitude (V/H) airborne platforms. Flight tests demonstrated the capability of the focal plane electronics for differential image motion compensation (IMC) with Nyquist performance utilizing a focal plane shutter (FPS) to enable both nadir and significant side and forward oblique imaging angles. The impact of FPS for differential image motion compensation is evaluated with the exterior orientation calibration parameters, which include the existing shutter velocity and flight dynamics from sample mapping applications. System requirements for GPS/INS are included with the effect of vertical error and side oblique angle impact of the digital elevation map (DEM) required to create the orthophoto. Results from the differentiated "collinearity equations" which relate the image coordinates to elements of interior and exterior orientation are combined with the DEM impact to provide useful guidelines for side oblique applications. The application of real-time orthophotography is described with the implications for system requirements for side oblique orthophoto capability.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brian A. Gorin "Side oblique real-time orthophotography with the 9Kx9K digital framing camera", Proc. SPIE 5109, Airborne Reconnaissance XXVII, (8 August 2003); https://doi.org/10.1117/12.503111
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