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- W1992001609 abstract "Radar resolution in three dimensions is considered for circular synthetic apertures at a constant elevation angle. A closed-form expression is derived for the far-field 3-D point spread function for a circular aperture of 360 degrees azimuth and is used to revisit the traditional measures of resolution along the x, y and z spatial axes. However, the limited angular persistence of reflectors encountered in practice renders the traditional measures inadequate for circular synthetic aperture radar imaging. Two alternative measures for 3-D resolution are presented: a nonparametric measure based on level sets of a reflector's signature and a statistical measure using the Cramer- Rao lower bound on location estimation error. Both proposed measures provide a quantitative evaluation of 3-D resolution as a function of scattering persistence and radar system parameters. The analysis shows that 3-D localization of a reflector requires a combination of large radar cross section and large angular persistence. In addition, multiple elevations or a priori target scattering models, if available, may be used to significantly enhance 3-D resolution." @default.
- W1992001609 created "2016-06-24" @default.
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- W1992001609 date "2007-04-27" @default.
- W1992001609 modified "2023-09-25" @default.
- W1992001609 title "Three-dimensional resolution for circular synthetic aperture radar" @default.
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- W1992001609 doi "https://doi.org/10.1117/12.723142" @default.
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