Citation:
Elgy J, Andre D, Finnis M. (2020) Volumetric SAR near-field upsampling and basebanding, Electronics Letters, Volume 56, Issue 12, June 2020, pp. 622-624
Abstract:
Highly sampled imagery offers many benefits to the radar practitioner,
ranging from easier image coregistration to simple visual appeal.
However, it is often overlooked due to the computational burden forming
such an image imposes. Fast image formation typically imposes
restrictions on the imaging scenario, for example synthetic aperture radar
(SAR) far-field, and exploits parallelism through use of modern multi-
core architecture. Imposing a SAR near-field requirement on the image
formation limits the applicability of several of the faster algorithms, thus
there is a need to create a general process to achieve highly sampled
imagery, regardless of the imaging regime. In this letter, a method for
accurately upsampling near-field (SAR) imagery is presented. This is
applicable to both SAR near-field and SAR far-field scenarios. The
methodology is discussed, and an example is provided in the form of a
SAR near-field volumetric image of a miniature tank. The limitations to
the approach are discussed and prospects for future work given.