Skip to Main Content
 

Global Search Box

 
 
 

ETD Abstract Container

Abstract Header

A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation

Abstract Details

2019, Doctor of Philosophy (Ph.D.), University of Dayton, Electrical and Computer Engineering.
Magnetron oscillator based marine radar technology is mature, affordable, reliable, and very effective for maritime safety applications. Commercial systems such as the Furuno DRS25A may be procured at a modest cost as compared to fully coherent solid-state systems costing many tens of thousands of dollars. Magnetron oscillators inherently generate random phase signals. Phase instability on a pulse-to-pulse basis impedes this class of marine radar from success in applications requiring coherency such as moving target indication (MTI) or in generating target imagery. This limitation may be overcome by incorporating radio frequency (RF) sampling technology to augment the current capability of available systems. RF sampling in order to extract a reference signal on transmit and a target echo on receive permits fully coherent processing. Marine radars traditionally operate non-coherently, and as such, offer limited surveillance in clutter rich environments. In this article, we report on a non-coherent marine radar that has been modified to produce a pseudo-coherent (coherent-on-receive) sensor system. This is crucial to MTI or target image formation. In laboratory experiments, we employed a magnetron oscillator based system to generate an inverse synthetic aperture radar (ISAR) image. Using four different algorithms: filtered back-projection (FBP), time domain and frequency domain back-projection (TDBP and FDBP), and the Algebraic reconstruction technique (ART), images have been formed and results compared.
Michael C. Wicks (Advisor)
Guru Subermanyum (Committee Member)
John S. Loomis (Committee Member)
Lorenzo Lo Monte (Committee Member)
166 p.

Recommended Citations

Citations

  • Aljohani, M. A. M. (2019). A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation [Doctoral dissertation, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1571665145862203

    APA Style (7th edition)

  • Aljohani, Mansour. A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation. 2019. University of Dayton, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1571665145862203.

    MLA Style (8th edition)

  • Aljohani, Mansour. "A Technique for Magnetron Oscillator Based Inverse Synthetic Aperture Radar Image Formation." Doctoral dissertation, University of Dayton, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1571665145862203

    Chicago Manual of Style (17th edition)