A near sensing millimeter wave synthetic aperture radiometer (MMW-SAR) passive imaging system was developed, which is composed of a signal processing system and two radiometers scanning along horizontal and vertical direction, to take images of the target within several meters. Uonfigura- tion and imaging algorithms of the imaging system were given in detail; it was proposed that the chief characteristic of near range imaging is phase compensation factor in imaging formula; the synthetic aperture imaging formula in the Cartesian coordinate system was deduced for the first time, to simplify arithmetic of tne expression and the phase compensation; the multiphase filtering algorithm was pro?posed m calculating the correlation function, to restrain the fluctuation ot imaginary part of the correla?tion function, and improves imaging quality and system efficiency.
Key words
information processing technique /
millimeter wave radiometer /
near sensing imaging /
synthetic aperture /
passive imaging /
FFT
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References
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