Three dimensional image synthesis: theory and application
Adams, Charles N.
Pace, Phillip E.
MetadataShow full item record
Inverse Synthetic Aperture Radar (ISAR) provides full range detection and classification of sea and air based targets through two-dimensional range-Doppler imaging. The Naval Postgraduate School has developed a custom integrated circuit that can simulate false ISAR images in order to fool enemy ISAR platforms. To validate specific hardware choices within this design, this thesis explores the effect on image quality of an overflow occurring within the final 16-bit summation adder of this circuit. Three solutions to the problem of overflows are presented and analyzed. The logical extension of ISAR development, that of three-dimensional target imaging, is next presented through the discussion of 3D monopulse radar, 3D interferometric ISAR, and a 3D, three receiver ISAR. The relative strengths of each approach are compared, along with both MATLAB and X3D software models created for one specific 3D ISAR implementation. Through the superposition of 2D ISAR images it is shown how 3D ISAR images may be created. Moreover, emphasis is placed on using this knowledge to both enhance current 2D ISAR techniques and to modify the false-target chip to handle 3D ISAR return signals. The thesis concludes with a study of Non-Uniform Rational B-Splines, through which the X3D software model was created.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Experimental Verification of Attitude Control Techniques for Slew Maneuvers of Flexible Spacecraft Hailey, J.; Sortun, C.; Agrawal, B.N. (1992);This paper presents experimental verification of modern and classical control laws on flexible spacecraft structures. The Flexible Spacecraft Simulator at the Naval Postgraduate School is designed to test a variety of ...
Batteson, Bruce (Monterey, CA; Naval Postgraduate School, 2019);Fast neutron detection is critical to the interdiction of illicit special nuclear material, among other potential applications. The use of heavy oxide scintillators to detect fast neutrons is one technology requiring little ...
Popa, Christopher H.; Stone, Sydney P.; Aw, Ee Hong Aw; Teo, Choon Pei Jeremy; Cai, Licun Edwin; Chong, Wai Hoe; Cline, Rachel; Hong, Jiesheng Jackson; Koh. Chong Khai Roger; Lee, Wee Leong; Lim, Jun Jie; Lin, Xinhong; Liraz, Shay Paz; Mok, Kai Boon Eugene; Ryan, Alex W. Ryan; Teow, Boon Hong Aaron; Whitmer, Andrew R.; Winstead, Peter J.; Chia,Yong Jie Chia; SEA Cohort SEA-27 (Monterey, California: Naval Postgraduate School, 2018);The concept of Distributed Maritime Operations intends to enable a force that is capable of winning a fleet-on-fleet engagement through the integration of manned and unmanned systems, execution of deceptive tactics, and ...