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METHOD AND APPARATUS FOR DETERMINING A DOPPLER CENTROID IN A SYNTHETIC APERTURE IMAGING SYSTEM
METHOD AND APPARATUS FOR DETERMINING A DOPPLER CENTROID IN A SYNTHETIC APERTURE IMAGING SYSTEM
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机译:用于确定合成孔径成像系统中多普勒质心的方法和装置
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摘要
There is described a method for determining a Doppler centroid in a synthetic aperture imaging system, comprising: receiving raw data representative of electromagnetic signals reflected by a target area; selecting, among the raw data, at least two sets of sub-area data each representative of electromagnetic signals reflected by a corresponding sub-area of the target area, the sub-areas being substantially aligned along an azimuth axis of the target area and having a substantially identical surface area; for each one of the sets of sub-area data, generating an image corresponding to the corresponding sub-area; and measuring a mean intensity of the image; and estimating the Doppler centroid from a skew of an intensity function representing the mean intensity as a function of a look number for the corresponding sub-area.
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