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Backprojection For Synthetic Aperture Radar, Michael Israel Duersch
Backprojection For Synthetic Aperture Radar, Michael Israel Duersch
Theses and Dissertations
Synthetic aperture radar (SAR) is a type of radar capable of high-resolution coherent imaging. In order to produce coherent imagery from raw SAR data, an image formation algorithm is employed. The various image formation algorithms have strengths and weaknesses. As this work shows, time-domain backprojection is one algorithm whose strengths are particularly well-suited to use at low-altitudes. This work presents novel research in three areas regarding time-domain backprojection. The first key contribution of this work is a detailed analysis of SAR time-domain backprojection. The work derives a general form of backprojection from first principles. It characterizes the sensitivities of backprojection …
An Investigation Into Ground Moving Target Indication (Gmti) Using A Single-Channel Synthetic Aperture Radar (Sar), Joseph W. Winkler
An Investigation Into Ground Moving Target Indication (Gmti) Using A Single-Channel Synthetic Aperture Radar (Sar), Joseph W. Winkler
Theses and Dissertations
Synthetic aperture radar (SAR) was originally designed as an airborne ground-imaging radar technology. But it has long been desired to also be able to use SAR imaging systems to detect, locate, and track moving ground targets, a process called Ground Moving Target Indication (GMTI). Unfortunately, due to the nature of how SAR works, it is inherently poorly suited to the task of GMTI. SAR only focuses targets and image features that remain stationary during the data collection. A moving ground target therefore does not focus in a conventional SAR image, which complicates the process of performing GMTI with SAR systems. …