Synthetic aperture radar processing using a nonuniform pulse repetition interval

Stacie G. Mobley; Mark W. Maier

doi:10.1117/12.276110

10 June 1997 Synthetic aperture radar processing using a nonuniform pulse repetition interval

Stacie G. Mobley, Mark W. Maier

Proceedings Volume 3066, Radar Sensor Technology II; (1997) https://doi.org/10.1117/12.276110
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

Due to recent development of the theory related to non- uniform Pulse Repetition Intervals (PRI) for pulse doppler radars, it has become feasible to combine the multiple pulse integration of Synthetic Aperture Radar (SAR) with the temporal agility of non-uniform PRI's. This combination can bring to the traditional SAR system the benefits of both strong resistance to countermeasures and interception, and high sensitivity. A significant problem which must be addressed in synthetic aperture radars is the possible smearing of the azimuth dimension of the image due to doppler sidelobes which are too high. This issue is even more serious with a non-uniform PRI waveform. In a traditional SAR the sidelobes are controlled with signal processing techniques such as amplitude weighting. However, these simpler techniques are not adequate for non-uniform PRI waveforms. One method for increasing the sidelobe rejection capability of these waveforms requires the use of a processor which consists of time varying linear digital filters. One way to design such a filter is through the use of interpolation based techniques.

Citation Download Citation

Stacie G. Mobley and Mark W. Maier "Synthetic aperture radar processing using a nonuniform pulse repetition interval", Proc. SPIE 3066, Radar Sensor Technology II, (10 June 1997); https://doi.org/10.1117/12.276110

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