Signature morphology effects of squint angle for arbitrarily moving surface targets in spotlight synthetic aperture radar
Garren, David Alan
MetadataShow full item record
This investigation examines the phenomenology effects of the squint angle on the morphology of moving target smears in spotlight synthetic aperture radar (SAR). This analysis includes both the smears resulting from standard image formation applied to simulated radar measurements as well as the theoretical predictions for the central contours of the signatures. In particular, this paper generates the down-range and cross-range components of the predicted central 2-D contours of mover signatures, including the locations of the cross-range offsets. The analytics for squinted geometry include additional contributions in the signature contour equations that do not arise for the case of broadside imaging. These terms can affect the overall contour morphology, particularly in terms of shape and extent. Numerous examples are presented to demonstrate that the signature prediction equations yield excellent agreement with standard image formation with simulated radar data. Therefore, this analysis can provide an effective tool in predicting the shape, extent, and location of smears due to arbitrarily moving surface targets for squinted spotlight SAR.
The article of record as published may be found at http://dx.doi.org/10.1109/TGRS.2015.2436371
Showing items related by title, author, creator and subject.
Garren, David A. (2017);This paper examines the effects of the mean target speed on the synthetic aperture radar (SAR) imagery morphology of signatures induced by surface movers that are transitioning from a lower to higher speed during the ...
Theory of two-dimensional signature morphology for arbitrarily moving surface targets in squinted spotlight synthetic aperture radar Garren, David Alan (IEEE, 2015);This paper develops analytic equations for predicting the smear signature morphology due to surface targets having arbitrary motion within squinted spotlight synthetic aperture radar (SAR) imagery. A power-series expansion ...
Garren, David A. (IEEE, 2017);Recent analyses have showed that moving target smears in synthetic aperture radar (SAR) imagery are not constrained to have the shapes of simple parabolas but instead can have a wide variety of two-dimensional (2D) shapes, ...