Title :
Coherent array imaging with sparse arrays
Author_Institution :
Dept. of Electr. Eng., Michigan Technol. Univ., Houghton, MI
Abstract :
For coherent, phased-array imaging systems, sparse arrays are often used in which the aperture is not completely filled by the array. Often, the data that are not collected by the array are set to zero and an image is obtained through a straight-forward Fourier inversion. An alternative technique-based on the method of maximum-likelihood estimation from incomplete data-is discussed for handling the missing data and forming images from data acquired by a coherent imaging system with a sparse array
Keywords :
antenna phased arrays; array signal processing; image processing; maximum likelihood estimation; Fourier inversion; aperture; coherent array imaging; coherent imaging system; incomplete data; maximum-likelihood estimation; missing data; phased-array imaging systems; sparse arrays; Apertures; Coherence; Discrete Fourier transforms; Extraterrestrial measurements; Gaussian processes; Image resolution; Layout; Remote sensing; Sensor systems; Wavelength measurement;
Conference_Titel :
Image Processing, 1995. Proceedings., International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
0-8186-7310-9
DOI :
10.1109/ICIP.1995.529057
