M.A. Morgan

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Linear array scanners are used as a substitute of two-dimensional/frame digital cameras since they can produce high-resolution digital images comparable to scanned aerial photographs. On the other hand, digital frame cameras have inadequate size that is dictated by technical considerations/limitations. In general, rigorous sensor modelling involves the(More)
Image resampling according to epipolar geometry is a prerequisite for a variety of photogrammetric tasks such as image matching, DEM and ortho-photo generation, aerial triangulation, map compilation, and stereoscopic viewing. The resampling process of imagery captured by frame camera has been established and implemented in current Digital Photogrammetric(More)
DEM generation from stereoscopic imagery is contingent on establishing the mathematical model relating the scene coordinates of conjugate points to the ground coordinates of the corresponding object point. Either rigorous or approximate models can be used to establish such a relationship. Rigorous modelling necessitates a full understanding of the imaging(More)
This paper presents the design and characterization of W-band IQ sub-harmonic MMIC mixers based on the UMS BES Schottky diode process. The mixers were characterized at 300 K and 20 K physical temperature. They are a key component for the compact heterodyne multi-chip modules to be used in the 16-element Argus focal plane array, which will be deployed at the(More)
Computation of fields due to a 500 turn coil positioned arbitrarily within a pipe constructed of conducting and/or magnetic material is performed using multi-region cylindrical harmonic modal expansions. Results involving steel and aluminum indicate the relative significance of shielding due to induced magnetization and eddy-current generation. Extension to(More)
One of the most exciting applications of millimeter-wave engineering and compound semiconductor technology is instrumentation for radio astronomy. It is a field rich with unique technical challenges and innovative solutions. This paper presents an overview of some of the circuits and systems that have been developed for the Atacama Large Millimeter Array(More)
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