Imaging Experiment of Monostatic and Bistatic UWB SAR at UHF-band

ABSTRACT

Due to the intrinsic property, ultrahigh frequency ultrawideband (UHF UWB) synthetic aperture radar (SAR) has lately become of a particular interest to the SAR community. Monostatic and bistatic UHF UWB SAR has the well foliage penetrating ability, high-resolution imaging and providing the increased information. In 2015, the monostatic and bistatic UHF UWB SAR experiment has been conducted. In this experiment, the monostatic and bistatic data were collected simultaneously by operating the vehicle-based radar in the SAR mode, in conjunction with the stationary ground-based receiver. Bistatic and monostatic SAR images were obtained by the subaperture spectrum-equilibrium method integrated with a fast factorized back projection (FFBP) method. Experiment results prove the property of the monostatic and bistatic UHF UWB SAR.

References

1. I. Cumming, and F. Wong, Digital Processing of Synthetic Aperture Radar Data Algorithm and Implementation. Norwood, MA, USA: Artech House, 2005.
2. D. An, X. Huang, T. Jin, and Z. Zhou, "Extended nonlinear chirp scaling algorithm for high-resolution highly squint SAR data focusing," IEEE Trans. Geosci. Remote Sens., vol. 50, no. 9, pp. 3761--3773, September 2012.
3. D. An, X. Huang, T. Jin, and Z. Zhou, "Extended two-step focusing approach for squinted spotlight SAR imaging," IEEE Trans. Geosci. Remote Sens.,vol.50, no.7, pp. 2889--2900, July 2012.
4. I. Walterscheid et al., "Bistatic SAR experiments with PAMIR and TerraSAR-X-Setup, processing, and image results," IEEE Trans. Geosci. Remote Sens., vol. 48, no. 8, pp. 3268--3279, August 2010.
5. M. Rodriguez-Cassola et al., "First bistatic spaceborne SAR experiments with TanDEM-X," IEEE Geosci. Remote Sens. Lett., vol. 9, no. 1, pp. 33--37, January 2012.
6. H. Hellsten, S. Sahlin, and P. Dammert, "Polarimetric subsurface SAR imaging outcome of theoretical development and CARABAS III tests," Proc. International Radar Conference (RADAR), Lille, France, October 2014, pp. 1--8.
7. L. Ulander, P. Frölind, A. Gustavsson, R. Ragnarsson, and G. Stenström, "VHF/UHF bistatic and passive SAR ground imaging," Proc. IEEE International Radar Conference, Arlington, VA, USA, May 2015, pp. 669--673.
8. M. Davis, Foliage penetration radar: detection and characterization of objects under trees. New York, NY, USA: Scitech Pub. Inc., 2011.
9. D. An, Y. Li, X. Huang, X. Li, and Z. Zhou, "Performance evaluation of frequency-domain algorithms for chirped low frequency UWB SAR data processing," IEEE J. Sel. Topics Appl. Earth Observ., vol. 7, no. 2, pp. 678--690, February 2014.
10. H. Xie, D. An, X. Huang, X. Li, and Z. Zhou, "Fast factorised backprojection algorithm in elliptical polar coordinate for one-stationary bistatic very high frequency/ ultrahigh frequency ultra wideband synthetic aperture radar with arbitrary motion", IET Radar Sonar Navig., vol. 8, no.8, pp. 946--956, 2014.
11. H. Xie, D. An, X. Huang, and Z. Zhou, "Fast time-domain imaging in elliptical polar coordinate for general bistatic VHF/UHF ultra-wideband SAR with arbitrary motion," IEEE J.Sel. Topics Appl. Earth Observ., vol.8, no. 2, pp. 879--895, February 2015.
12. H. Xie, D. An, X. Huang, and Z. Zhou, "Efficient raw signal generation based on equivalent scatterer and subaperture processing for one-stationary bistatic SAR including motion errors," IEEE Trans. Geosci. Remote Sens., vol. 54, no. 6, pp. 3360--3377, June 2016.
13. H. Xie, D. An, X. Huang, and Z. Zhou, "Research on spatial resolution of one-stationary bistatic ultrahigh frequency ultrawidebeam ultrawideband SAR based on scattering target wavenumber domain support," IEEE J. Sel. Topics Appl. Earth Observ., vol. 8, no. 4, pp. 1782--1798, Apil 2015.
14. H. Xie et al, "Fast factorized backprojection algorithm for one-stationary bistatic spotlight circular SAR image formation," IEEE J. Sel. Topics Appl. Earth Observ., vol. 10, no. 4, pp. 1494 - 1510, 2017.
15. J. R. Rasmusson et al., "Bistatic VHF and UHF SAR for urban environments," Proc. SPIE SAR Techn. Radar Sensor Technol. XI, Orlando, FL, USA, 2007, vol. 6547, pp. 1--12.
16. D. Henke, A. Barmettler, and E. Meier, "Bistatic experiment with the UWB-CARABAS sensor-first results and prospects of future applications," Proc. IGARSS, Capetown, South Africa, July 2009, pp. 234--237.
17. L. Ulander, et al., "Signal-to-clutter ratio enhancement in bistatic VHF-band SAR images of truck vehicles in forested and urban terrain," IET Radar Sonar Navig., vol. 4, no. 3, pp. 438--448, 2010.
18. H. Xie, S. Shi, H. Xiao, C. Xie, F. Wang, and Q. Fang, "Efficient time-domain imaging processing for one-stationary bistatic forward-looking SAR including motion errors," Sensors, vol. 16, no. 11, pp. 1--27, November 2016.
19. L. Ulander, P. Frölind, A. Gustavsson, D. Murdin, and G. Stenström, "Fast factorized back-projection for bistatic SAR processing," Proc. EUSAR, Aachen, Germany, June 2010, pp. 1002--1005.
20. M. Rodriguez-Cassola, P. Prats, G. Krieger, and A. Moreira, "Efficient time-domain Image formation with precise topography accommodation for general bistatic SAR configurations," IEEE Trans. Aerosp. Electron. Syst., vol.47, no.4, pp. 2949--2966, October 2011.
21. V. Vu, T. Sjögren, and M. Pettersson, "Fast time-domain algorithms for UWB bistatic SAR processing," IEEE Trans. Aerosp. Electron. Syst., vol. 49, no. 3, pp. 1982--1994, July 2013.

Index Terms

• Hardware

  • Communication hardware, interfaces and storage

    • Displays and imagers