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Progress In Electromagnetics Research
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ANALYSIS OF MICROWAVE EMISSION OF EXPONENTIALLY CORRELATED ROUGH SOIL SURFACES FROM 1.4 GHz TO 36.5 GHz

By P. Xu, K. Chen, and L. Tsang

Full Article PDF (390 KB)

Abstract:
We analyzed the microwave emission from a rough soil surface with exponential correlation by characterizing its dependences of polarization, look angle, and frequency. Using the same set of physical surface parameters of rms height and correlation lengths, results are obtained for a wide range of frequencies at 1.4 GHz, 5 GHz, 10 GHz, 18 GHz, and 36.5 GHz. Accurate simulations for the 2-D scattering problem are conducted by Galerkin's method with the rooftop basis function, followed by near-field integration, fine discretization, and cubic spline interpolation of surfaces. The multilevel UV method was employed to accelerate the solution. Accuracy is ensured by energy conservation check. Simulation results are compared with SPM, KA and AIEM. Results suggest that there exists distinct emission characteristic between the exponential and the Gaussian correlated surface. These charcateristics should be very useful in developing retrieval algorithm of the soil moisture from emissivity measurements.

Citation:
P. Xu, K. Chen, and L. Tsang, "Analysis of Microwave Emission of Exponentially Correlated Rough Soil Surfaces from 1.4 GHz to 36.5 GHz ," Progress In Electromagnetics Research, Vol. 108, 205-219, 2010.
doi:10.2528/PIER10072703
http://www.jpier.org/PIER/pier.php?paper=10072703

References:
1. Wang, J. R. and B. J. Choudhury, "Remote sensing of soil moisture content over bare fields at 1.4 GHz frequency," J. Geophys. Res., Vol. 86, 5277-5282, 1981.
doi:10.1029/JC086iC06p05277

2. Tsang, L. and R. W. Newton, "Microwave emissions from soils with rough surfaces," J. Geophy. Res., Vol. 87, No. 11, 9017-9024, 1982.
doi:10.1029/JC087iC11p09017

3. Wang, J. R., P. E. O'Neill, T. J. Jackson, and E. T. Engman, "Multi-frequency measurements of the effects of soil moisture, soil texture and surface roughness," IEEE Transactions on Geoscience and Remote Sensing, Vol. 21, 44-51, 1983.
doi:10.1109/TGRS.1983.350529

4. Tsang, L., J. A. Kong, and R. T. Shin, Theory of Microwave Remote Sensing, John Wiley & Sons, 1985.

5. Ulaby, F. T., R. K. Moore, and A. K. Fung, Microwave Remote Sensing, Vol. 2, No. 3, Artech House, 1986.

6. Paloscia, S. and P. Pampaloni, "Microwave polarization index for monitoring vegetation growth," IEEE Transactions on Geoscience and Remote Sensing, Vol. 26, No. 5, 617-621, 1988.
doi:10.1109/36.7687

7. Pampaloni, P. (ed.), Microwave Radiometry and Remote Sensing Applications, Brill Academic, Leiden, 1989.

8. Paloscia, S., P. Pampaloni, L. Chiarantini, P. Coppo, S. Gagliani, and G. Luzi, "Multifrequency passive microwave remote sensing of soil moisture and roughness," Int. J. Remote Sensing, Vol. 14, No. 3, 467-483, 1993.
doi:10.1080/01431169308904351

9. Shi, J. C., J. Wang, A. Y. Hsu, P. E. O'Neill, and E. T. Engman, "Estimation of bare surface soil moisture and surface roughness parameter using L-band SAR image data," IEEE Transactions on Geoscience and Remote Sensing, Vol. 35, 1254-1266, Sep. 1997.

10. Njoku, E. G. and L. Li, "Retrieval of land surface parameters using passive microwave sensing at 6{18 GHz," IEEE Transactions on Geoscience and Remote Sensing, Vol. 37, No. 1, 79-93, 1999.
doi:10.1109/36.739125

11. Shi, J., K. S. Chen, Q. Li, T. J. Jackson, P. E. O'Neill, and L. Tsang, "A parameterized surface reflectivity model and estimation of bare-surface soil moisture with L-band radiometer," IEEE Transactions on Geoscience and Remote Sensing, Vol. 40, No. 12, 2674-2686, 2002.
doi:10.1109/TGRS.2002.807003

12. Shi, J. C., L. M. Jiang, L. X. Zhang, K. S. Chen, J.-P. Wigneron, and A. Chanzy, "A parameterized multifrequency-polarization surface emission model," IEEE Transactions on Geoscience and Remote Sensing, Vol. 43, No. 12, 2831-2841, 2005.
doi:10.1109/TGRS.2005.857902

13. Fung, A. K., Microwave Scattering and Emission Models and their Applications, Artech House, 1992.

14. Chen, K. S., T. D. Wu, and J. C. Shi, "A model-based inversion of rough surface parameters from radar measurements," Journal of Electromagnetic Waves and Applications, Vol. 15, No. 2, 173-200, 2001.
doi:10.1163/156939301X01336

15. Li, Q., J. C. Shi, and K. S. Chen, "A generalized power law spectrum and its applications to the backscattering of soil surfaces based on the integral equation model," IEEE Transactions on Geoscience and Remote Sensing, Vol. 40, No. 2, 271-281, 2002.
doi:10.1109/36.992784

16. Chen, K. S., T. D.Wu, L. Tsang, Q. Li, and J. C. Shi, "Emission of rough surfaces calculated by the integral equation method with a comparison to a three-dimensional moment method simulations," IEEE Transactions on Geoscience and Remote Sensing, Vol. 41, No. 1, 90-101, 2002.
doi:10.1109/TGRS.2002.807587

17. Chen, K. S., A. K. Fung, J. C. Shi, and H.-W. Lee, "Intepretation of backscattering mechanism from non-gaussian correlated randomly rough surfaces," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 1, 2233-2246, 2006.

18. Xu, P. and L. Tsang, "Bistatic scattering and emissivities of lossy dielectric surfaces with exponential correlation functions," IEEE Transactions on Geoscience and Remote Sensing, Vol. 45, No. 1, 62-72, 2007.
doi:10.1109/TGRS.2006.883458

19. Fung, A. K. and K. S. Chen, Microwace Scattering and Emission Models for Users, Artech House, 2010.

20. Mattia, F., T. Le Toan, J. Souyris, G. Carolis, N. Floury, F. Posa, and G. Pasquariello, "The effect of surface roughness on multifrequency polarimetric SAR data," IEEE Transactions on Geoscience and Remote Sensing, Vol. 35, No. 4, 954-966, Jul. 1997.
doi:10.1109/36.602537

21. Davidson, M. W. J., T. Le Toan, F. Mattia, C. Satalino, T. Manninen, and M. Borgeaud, "On the characterization of agricultural soil roughness for radar remote sensing studies," IEEE Transactions on Geoscience and Remote Sensing, Vol. 38, No. 2, 630-640, Mar. 2000.
doi:10.1109/36.841993

22. Tsang, L., J. A. Kong, and K. H. Ding, Scattering of Electromagnetic Waves: Theories and Applications, Wiley, New York, 2000.
doi:10.1002/0471224286

23. Tsang, L., D. Chen, P. Xu, Q. Li, and V. Jandhyala, "Wave scattering with the UV multilevel partitioning method: 1. Two-dimensional problem of perfect electric conductor surface scattering," Radio Sci., Vol. 39, No. 5, 2004.

24. Xu, P. and L. Tsang, "Scattering by rough surface using a hybrid technique combining the multilevel UV method with the sparse matrix canonical grid method," Radio Sci., Vol. 40, No. 4, 2005.
doi:10.1029/2005RS003242

25. Hallikainen, M. T., F. T. Ulaby, M. C. Dobson, M. A. El-Rayes, and L. K. Wu, "Microwave dielectric behavior of wet soil --- Part I: Empirical models and experimental observations," IEEE Transactions on Geoscience and Remote Sensing, Vol. 23, No. 1, 25-34, 1985.
doi:10.1109/TGRS.1985.289497

26. Gu, X., L. Tsang, H. Braunisch, and P. Xu, "Modeling absorption of rough interface between dielectric and conductive medium," Microw. Opt. Technol. Lett., Vol. 49, No. 1, 7-13, 2007.
doi:10.1002/mop.22023


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