Effects of Long-Term Evolution Waveform on Synthetic Aperture Radar Image Quality Metrics
Technical Report,01 Sep 2018,01 Mar 2020
AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States
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Passive radar allows for data collection by referencing signals already established in the environment. LTE is a prolific waveform that could be leveraged for discrete collection of image intelligence. Seeking to build a base of knowledge, simulations of SAR systems are carried out using the LTE framework Variations in waveform content, structure, and signal components are established and used to generate PSF responses characterizing the image domain impacts of given fluctuations. Overall, PSF responses for most variations are highly similar, incurring slight losses as pulses become more diverse and slight gains when maximizing the amount of user data contained in pulses. Notable side lobes in range profiles occur at predictable intervals and may be easily managed for adequately-sized scenes. PSLR and ISLR results show marginal improvements when pulses are diverse. Range and cross-range resolution, while remaining mostly unchanged throughout variations, are observed to be worse in simulation than is expected.
- Active and Passive Radar Detection and Equipment
- Radiofrequency Wave Propagation