A method for nonlinear mapping of k-space samples to facilitate the two-dimensional irregular to regular resampling required by the polar format algorithm (PFA) is presented. Mapping the locations of the collected k-space samples to a uniform rectangular grid and desired locations covering the data region, the interpolation becomes separable in two-dimensions. Resulting PFA images require no further processing to be displayed in the global X, Y coordinates and use all the collected data. This method of resampling allows PFA image formation from bistatic synthetic aperture radar (SAR) and also data collected from irregular flight paths.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.