Linear frequency modulated signals vs orthogonal frequency division multiplexing signals for synthetic aperture radar systems
Holder, Sade A.
MetadataShow full item record
The goal of this thesis is to investigate the effects of an orthogonal frequency-division multiplexing (OFDM) signal versus a linear frequency modulated or chirp signal on simulated synthetic aperture radar (SAR) imagery. Various parameters of the transmitted signal, such as pulse duration, transmitted signal energy, bandwidth, and (specifically for the OFDM signal) number of subcarriers and transmission scheme were examined to determine which parameters are most important to reconstructing a SAR image. Matched filtering and interpolation are two techniques used to reconstruct the SAR image. SAR systems are used in various military and civilian sector applications. Some SAR application examples include ground surveillance, reconnaissance and remote sensing. These applications demand high resolution imagery; therefore, knowledge of exactly which parameters of the transmitted radar signal are more important in producing fine resolution imagery is worth investigating. This research will also aid in providing flexibility in terms of what type of signal and signal parameters are best suited for a particular SAR application and associated military missions. In addition to improving the method attaining high resolution images, SAR process improvement can potentially reduce military SAR system design cost.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Crnkovich, Joseph G. (Monterey, California. Naval Postgraduate School, 2009-06);This thesis investigates the impact of various waveform parameters on the ability to estimate accurately the position of the source of a known data-less emission that is visible to multiple simultaneous collectors. It ...
Detection and classification of low probability of intercept radar signals using parallel filter arrays and higher order statistics Taboada, Fernando L. (Monterey, California. Naval Postgraduate School, 2002-09);The term Low Probability of Intercept (LPI) is that property of an emitter that because of its low power, wide bandwidth, frequency variability, or other design attributes, makes it difficult to be detected or identified ...
Bulkeley, Peter Wood; Tracey, Michael Thomas (Monterey, California. Naval Postgraduate School, 1973-03);The performance of an individual in a signal-detection task depends on two independent psychological processes. One of these processes is sensory activation, and the other is cognitive decision. In a signaldetection experiment, ...