DRFM CORDIC processor and sea clutter modeling for enhancing structured false target synthesis
Ang, Pak Siang
Pace, Phillip E.
Fouts, Douglas J.
MetadataShow full item record
In this thesis, we investigate two critical components of a digital-image synthesizer electronic warfare architecture that can be used to infuse false targets into high-range resolution profiling radars. The first investigation encompasses the design of an in-phase and quadrature (I/Q) converter based on a CORDIC (Coordinate Rotation Digital Computer) algorithm. Mathematical modeling is used to examine the accuracy of converting a digitized radar signal I/Q sample into a corresponding five-bit binary phase angle. Results obtained from MATLAB show that 18 CORDIC iterations are required to achieve accuracy at 5.625˚. The resulting design was implemented using the Verilog hardware description language. The second investigation concerns generating sea clutter to impose on the false target. The mean-power return of the sea clutter is calculated using the average power of the radar-cross section derived from the Naval Research Laboratory sea clutter model. The modulation coefficients for the sea clutter were generated using the fluctuating power returns and Doppler spectra generated using a random KA distribution. The coefficients for several sea states were generated using MATLAB. Results show that the correct sea clutter model can effectively add realism to the false target image.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Paulose, Abraham Thomas (Monterey, California. Naval Postgraduate School, 1994-06);High range resolution can be obtained using a number of methods including ultra-wideband radar, intrapulse pulse compression, and super- resolution techniques. This thesis investigates the achievement of high radar range ...
Statistical nonrecursive spatial-temporal focal plane processing for background clutter suppression and target detection. Even-or, Baruch (Monterey, California. Naval Postgraduate School, 1979-03);Advanced surveillance and weapon guidance systems using new mosaic sensor arrays and large scale integration (LSI) electronic data processors on the same focal plane require detection of weak targets deeply buried in ...
Lin, Yowchyun (Monterey, California. Naval Postgraduate School, 2012-09);This thesis addresses the development of a novel sea clutter module to enhance the digital image synthesizer (DIS) integrated circuit, so that the false-target image generated will be more resistant to the electronic ...