PIER
 
Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 121 > pp. 19-37

MIMO-TOPS MODE FOR HIGH-RESOLUTION ULTRA-WIDE-SWATH FULL POLARIMETRIC IMAGING

By W. Xu, P. Huang, and Y.-K. Deng

Full Article PDF (382 KB)

Abstract:
The novel TOPS mode can achieve wide swath imaging coverage at the cost of impaired azimuth resolution. MIMO-SAR systems combined with multi-channel SAR signal reconstruction in azimuth and digital beamforming (DBF) on receive in elevation can overcome the inherent contradiction between swath width and azimuth resolution of conventional SAR systems. This paper derives a novel spaceborne MIMO-TOPS mode for high-resolution ultra-wide-swath full polarimetric imaging. In such an imaging scheme, different polarimetric waveforms with different elevation beam pointing directions and short time delays are transmitted in a single pulse repetition interval (PRI) by different sub-aperture antennas in azimuth. Besides improving the desired signal-to-noise ratio (SNR) and suppressing ambiguous energy in elevation, a novel DBF on receive approach including two steps is adopted to separate different echoes corresponding to sub-pulses with different polarizations. The design example of a full polarimetric MIMO-TOPS SAR system, which allows for the imaging capacity to cover an ultra wide swath of 400 km with a high azimuth resolution of 3 m, is given to validate the proposed imaging scheme.

Citation:
W. Xu, P. Huang, and Y.-K. Deng, "MIMO-Tops Mode for High-Resolution Ultra-Wide-Swath Full Polarimetric Imaging," Progress In Electromagnetics Research, Vol. 121, 19-37, 2011.
doi:10.2528/PIER11030209
http://www.jpier.org/PIER/pier.php?paper=11030209

References:
1. Chan, Y. K. and V. C. Koo, "An introduction to synthetic aperture radar (SAR)," Progress In Electromagnetics Research B, Vol. 2, 27-60, 2008.

2. Angulo, L. D., S. G. Garcia, M. Fernandez Pantoja, C. Cobos Sanchez, and R. Gomez Martin, "Improving the SAR distribution in petri-dish cell cultures," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 5-6, 815-826, 2010.

3. Lim, S. H., J.-H. Han, S.-Y. Kim, and N.-H. Myung, "Azimuth beam pattern synthesis for airborne SAR system optimization," Progress In Electromagneitcs Research, Vol. 106, 295-309, 2010.

4. Chan, Y. K. and S. Y. Lim, "Synthetic aperture radar (SAR) signal generation," Progress In Electromagnetics Research B, Vol. 1, 269-290, 2008.

5. Li, C. and D.-Y. Zhu, "A residue-pairing algorithm for insar phase unwrapping," Progress In Electromagnetics Research, Vol. 95, 341-354, 2009.

6. Sun, J., S. Mao, G.Wang, and W. Hong, "Extended exact transfer function algorithm for bistatic SAR of translational invariant case," Progress In Electromagnetics Research, Vol. 99, 89-108, 2009.

7. Zan, F. D. and A. M. Guarnieri, "TOPSAR: Terrain observation by progressive scans," IEEE Trans. Geosci. Remote Sens., Vol. 44, No. 9, 2352-2360, Sep. 2006.

8. Meta, A., J. Mittermayer, P. Prats, R. Scheiber, and U. Steinbrecher, "TOPS imaging with TerraSAR-X: Mode design and perfomance analysis ," IEEE Trans. Geosci. Remote Sens., Vol. 48, No. 2, 759-769, Feb. 2010.

9. Prats, P., R. Scheiber, J. Mittermayer, A. Meta, and A. Moreira, "Processing of sliding spotlight and TOPS SAR data using baseband azimuth scaling," IEEE Trans. Geosci. Remote Sens., Vol. 48, No. 2, 770-780, Feb. 2010.

10. Chua, M. Y. and V. C. Koo, "FPGA-based chirp generator for high resolution UAV SAR," Progress In Electromagnetics Research, Vol. 99, 71-88, 2009.

11. Sun, J., S. Mao, G. Wang, and W. Hong, "Polar format algorithm for spotlight bistatic SAR with arbitrary geometry configuration," Progress In Electromagnetics Research, Vol. 103, 323-338, 2010.

12. Krieger, G., N. Gebert, M. Younis, F. Bordoni, A. Patyuchenko, and A. Moreira, Advanced concepts for ultra-wide-swath SAR imaging with high azimuth resolution, Proc. EUSAR, Friedrichshafen, Germany, 2008.

13. Gebert, N., G. Krieger, and A. Moreira, "Multi-channel ScanSAR for high-resolution ultra-wide-swath imaging," Proc. EUSAR, Friedrichshafen, Germany, 2008.

14. Gebert, N., G. Krieger, and A. Moreira, "Multichannel azimuth processing in ScanSAR and TOPS mode operation," IEEE Trans. Geosci. Remote Sens., Vol. 48, No. 7, 2994-3008, Jul. 2010.

15. Wei, S.-J., X.-L. Zhang, J. Shi, and G. Xiang, "Sparse reconstruction for SAR imaging based on compressed sensing," Progress In Electromagnetics Research, Vol. 109, 63-81, 2010.

16. Zhao, Y. W., M. Zhang, and H. Cheng, "An efficient ocean SAR raw signal simulation by employing fast Fourier transform," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 16, 2273-2284, 2010.

17. Mao, X., D.-Y. Zhu, and Z.-D. Zhu, "Signatures of moving target in polar format spotlight SAR image," Progress In Electromagnetics Research, Vol. 92, 47-64, 2009.

18. Zhang, Y.-D., L. Wu, and G. Wei, "A new classifier for polarimetric SAR images," Progress In Electromagnetics Research, Vol. 94, 83-104, 2009.

19. Teng, H. T., H.-T. Ewe, and S. L. Tan, "Multifractal dimension and its geometrical terrain properties for classification of multiband multi-polarized SAR image," Progress In Electromagnetics Research, Vol. 104, 221-237, 2010.

20. Jin, Y.-Q., "Polarimetric scattering modeling and information retrieval of SAR remote sensing --- A review of fdu work ," Progress In Electromagnetics Research, Vol. 104, 333-384, 2010.

21. Krieger, G., N. Gebert, and A. Moreira, "Multidimensional waveform encoding for synthetic aperture radar remote sensing," Proc. International Conference on Radar Systems (RADAR), Edinburgh, UK, 2007.

22. Krieger, G., N. Gebert, and A. Moreira, "Multidimensional waveform encoding: A new digital beamforming technique for synthetic aperture radar remote sensing ," IEEE Trans. Geosci. Remote Sens., Vol. 46, No. 1, 31-46, Jan. 2008.

23. Xu, W. and Y. Deng, "Multi-channel SAR system with reflector antenna for high-resolution wide-swath imaging," IEEE Antenna and Wireless Propa. Lett., Vol. 9, 1123-1126, Dec. 2010.

24. Junghyo, K., O. Alicja, and W. Werner, "Investigation of MIMO SAR for interferometry," Proc. EUSAR, Friedrichshafen, Germany, 2008.

25. Suess, M., B. Grafmueller, and R. Zahn, A novel high resolution, wide swath SAR system, Proc. IGARSS, Sydney, Australia, 2001.

26. Krieger, G., N. Gebert, and A. Moreira, "Unambiguous SAR signal reconstruction from nonuniform displaced phase center sampling," IEEE Geosci. Remote Sens. Lett., Vol. 1, No. 4, 260-264, Oct. 2004.

27. Gebert, N., G. Krieger, and A. Moreira, "Digital beamforming on receive: Techniques and optimization strategies for high-resolution wide-swath SAR imaging," IEEE Trans. Aerosp. Electron. Syst., Vol. 54, No. 2, 564-592, Apr. 2009.


© Copyright 2014 EMW Publishing. All Rights Reserved