Compressed sensing ISAR reconstruction considering highly maneuvering motion
Khwaja, Ahmed Shaharyar and Çetin, Müjdat (2017) Compressed sensing ISAR reconstruction considering highly maneuvering motion. Electronics, 6 (1). ISSN 2079-9292
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Official URL: http://dx.doi.org/10.3390/electronics6010021
In this report, we propose compressed sensing inverse synthetic aperture radar (ISAR) imaging in the presence of highly maneuvering motion using a modified orthogonal matching pursuit (OMP) reconstruction algorithm. Unlike existing methods where motion is limited to first- or second-order phase terms, we take into account realistic motion of a maneuvering target that can involve a third-order phase term corresponding to the rate of rotational acceleration. In addition, unlike existing fixed dictionary-based methods, which require designing a large dictionary that needs to take into account all of the possible motion parameters, we propose a modified OMP reconstruction method that requires a dictionary only based on the first-order phase term and estimates the second- and third-order phase terms using an optimization algorithm. Simulation examples and comparison with existing methods show the viability of our approach for imaging moving targets consisting of higher order motion.
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