Modeling and simulating SAR backscatter from urban features

Dan Johan Weydahl; Richard Norland; Xavier Becquey

doi:10.1117/12.227166

21 November 1995 Modeling and simulating SAR backscatter from urban features

Dan Johan Weydahl, Richard Norland, Xavier Becquey

Proceedings Volume 2584, Synthetic Aperture Radar and Passive Microwave Sensing; (1995) https://doi.org/10.1117/12.227166
Event: Satellite Remote Sensing II, 1995, Paris, France

Abstract

Strong point backscatter can be observed in ERS-1 satellite SAR images taken over urban areas. Several of these point backscatter come from metal surfaces and roofs. An experiment using a continuous wave (cw) radar has been carried out in order to model the radar backscatter from tarred board roofs and corrugated iron surfaces. Test objects are illuminated by the cw-radar using the ERS-1 SAR frequency, but with several polarizations and incidence angles. Specular reflection and Bragg resonance effects are studied in particular. Radar simulations are used to confirm the experimental results. The final results show that both metal and tarred board roofs can give strong radar backscatter. Both first and second order Bragg resonance peaks occurred at the theoretical incidence angles when illuminating corrugated iron plates with the radar. Comparisons are also made to real data by investigating point target backscatter seen in a multitemporal ERS-1 SAR image data set. Further investigations could be carried out when RADARSAT images acquired at different incidence angles are available.

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Dan Johan Weydahl, Richard Norland, and Xavier Becquey "Modeling and simulating SAR backscatter from urban features", Proc. SPIE 2584, Synthetic Aperture Radar and Passive Microwave Sensing, (21 November 1995); https://doi.org/10.1117/12.227166

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KEYWORDS

Radar

Synthetic aperture radar

Backscatter

Metals

Polarization

Specular reflections

Satellites

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