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Calibration of the ARL BoomSAR using rigorous scattering models for fiducial targets over ground

Publication ,  Journal Article
Ressler, M; Merchant, B; Wong, D; Nguyen, L; Geng, N; Carin, L
Published in: Proceedings of SPIE - The International Society for Optical Engineering
December 1, 1999

The Army Research Laboratory (ARL) synthetic aperture radar (SAR) system is placed atop a boom lift, and therefore the system is termed a 'BoomSAR'. The UWB character of this system, covering a frequency spectrum from 40-1200 MHz, makes accurate polarimetric calibration a nontrivial matter. The response of the standard trihedral fiducial target is poorly understood at VHF and UHF frequencies, for which the wave interaction with the soil can be an important issue. Here we employ a rigorous method-of-moments (MoM) analysis of UWB scattering from a trihedral reflector over ground. The soil is modeled as a lossy, dispersive half space, accounted for rigorously via the half-space Green's function. The numerical algorithm is used to evaluate the angle-dependent, polarimetric frequency dependence of scattering from a trihedral target, at VHF and UHF frequencies. This comprehensive study of UWB scattering from a trihedral over soil is critical for system calibration.

Duke Scholars

Published In

Proceedings of SPIE - The International Society for Optical Engineering

ISSN

0277-786X

Publication Date

December 1, 1999

Volume

3704

Start / End Page

50 / 56

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
 

Citation

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Ressler, M., Merchant, B., Wong, D., Nguyen, L., Geng, N., & Carin, L. (1999). Calibration of the ARL BoomSAR using rigorous scattering models for fiducial targets over ground. Proceedings of SPIE - The International Society for Optical Engineering, 3704, 50–56.
Ressler, M., B. Merchant, D. Wong, L. Nguyen, N. Geng, and L. Carin. “Calibration of the ARL BoomSAR using rigorous scattering models for fiducial targets over ground.” Proceedings of SPIE - The International Society for Optical Engineering 3704 (December 1, 1999): 50–56.
Ressler M, Merchant B, Wong D, Nguyen L, Geng N, Carin L. Calibration of the ARL BoomSAR using rigorous scattering models for fiducial targets over ground. Proceedings of SPIE - The International Society for Optical Engineering. 1999 Dec 1;3704:50–6.
Ressler, M., et al. “Calibration of the ARL BoomSAR using rigorous scattering models for fiducial targets over ground.” Proceedings of SPIE - The International Society for Optical Engineering, vol. 3704, Dec. 1999, pp. 50–56.
Ressler M, Merchant B, Wong D, Nguyen L, Geng N, Carin L. Calibration of the ARL BoomSAR using rigorous scattering models for fiducial targets over ground. Proceedings of SPIE - The International Society for Optical Engineering. 1999 Dec 1;3704:50–56.

Published In

Proceedings of SPIE - The International Society for Optical Engineering

ISSN

0277-786X

Publication Date

December 1, 1999

Volume

3704

Start / End Page

50 / 56

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering