Design of a Two-Receiver Interferometer on Motorized Tracks
Document Type: Open Access
Degree Program
Electrical & Computer Engineering
Degree Type
Master of Science in Electrical and Computer Engineering (M.S.E.C.E.)
Year Degree Awarded
2008
Month Degree Awarded
May
Primary Subject Category
Electrical engineering
Keywords
Microwave remote sensing, aperture synthesis, radio astronomy, thinned array, radiometer
Advisor(s) or Committee Chair
Schaubert, Daniel H
Abstract
A 94.8 GHz interferometric imaging system utilizing aperture synthesis and tomography is developed for the Center for Advanced Sensor and Communication Antennas. Whereas typical interferometer designs employ multiple antennas to synthesize an aperture for image reconstruction, this unique interferometer will reproduce a scene's brightness temperature with only two antennas. To achieve this, the aperture synthesis is done with one antenna remaining stationary while the second antenna is moved at discrete increments along two controlled tracks. The two signals received by the antennas are cross-correlated to produce measured visibility function samples. The visibility samples reconstruct the scene brightness temperature through an inverse Fourier transform relationship.
Recommended Citation
Marklein, Eric, "Design of a Two-Receiver Interferometer on Motorized Tracks" (2008). Masters Theses. Paper 122.
http://scholarworks.umass.edu/theses/122
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