Compared with the backscattering configuration, the bistatic scattering echoes can provide multidimensional information on land surface. Based on the Michigan Microwave Canopy Scattering (MIMICS) model, a first-order microwave bistatic scattering model for vegetations is developed in this paper. The dominant scattering mechanism for wheat and soybean in the L and C bands is analyzed by simulating the bistatic scattering echoes in multiple viewpoints, which can help us understand the interaction between incident wave and vegetation parameters. The influence of crop height, leaf size and moisture of vegetations and down layer soil on the scattering echoes is fully investigated. The simulations show that the bistatic scattering echoes are more sensitive to the vegetation parameters than that in backscattering configuration. There exist optimal scattering angles, in specular direction and in direction perpendicular to the incident plane, to improve the retrieval accuracy of vegetation parameters and moisture of soil surface. Moreover, the simulations demonstrate that bistatic scattering echoes in high frequency (C band) are a good choice to retrieve the vegetation parameters, and the echoes in low frequency (L band) are preferred to retrieve the soil parameters. This research can be used to provide reference for crop monitoring and future bistatic system design.
2. Liao, J., T. Xu, and G. Shen, "Simulating microwave scattering for wetland vegetation in poyang lake, southeast china, using a coherent scattering model," Remote Sensing, Vol. 7, No. 8, 9796-9821, 2015.
doi:10.3390/rs70809796
3. Yang, L. and L. Hao, "Numerical modeling and mechanism analysis of vhf wave propagation in forested environments using the equivalent slab model," Progress In Electromagnetics Research, Vol. 91, 17-34, 2009.
4. Garcia-Rubia, J. M., O. Kilic, V. Dang, Q. Nguyen, and N. Tran, "Analysis of moving human micro-doppler signature in forest environments," Progress In Electromagnetics Research, Vol. , -14,2014, Vol. 148, 1-14, 2014.
5. Johnson, J. T. and J. D. Ouellette, "Polarization features in bistatic scattering from rough surfaces," IEEE Transactions on Geoscience and Remote Sensing, Vol. 52, No. 3, 1616-1626, 2014.
doi:10.1109/TGRS.2013.2252909
6. Nashashibi, A. Y. and F. T. Ulaby, "MMW polarimetric radar bistatic scattering from a random surface," IEEE Transactions on Geoscience and Remote Sensing, Vol. 45, No. 6, 1743-1755, 2007.
doi:10.1109/TGRS.2007.894439
7. Schlund, M., F. V. Poncet, D. H. Hoekman, S. Kuntz, and C. Schmullius, "Importance of bistatic SAR Features from TanDEM-X for forest mapping and monitoring," Remote Sensing of Environment, Vol. 151, No. 8, 16-26, 2014.
doi:10.1016/j.rse.2013.08.024
8. Gupta, D. K., P. Kumar, V. N. Mishra, R. Prasad, P. K. S. Dikshit, S. B. Dwivedi, A. Ohri, R. S. Singh, and V. Srivastava, "Bistatic measurements for the estimation of Rice crop variables using artifical neural network," Advances in Space Reasearch, Vol. 55, 1613-1623, 2015.
doi:10.1016/j.asr.2015.01.003
9. Bellez, S., H. Roussel, C. Dahon, and J. M. Geffrin, "A rigorous forest scattering model validation through comparison with indoor bistatic scattering measurements," Progress In Electromagnetics Research B, Vol. 33, 1-19, 2011.
doi:10.2528/PIERB11063009
10. Thirion-Lefevre, L., E. Colin-Koeniguer, and C. Dahon, "Bistatic scattering from forest components. Part I: coherent polarimetric modelling and analysis of simulated results," Waves in Random and Complex Media, Vol. 20, No. 1, 36-61, 2010.
doi:10.1080/17455030903499680
11. Ulaby, F. T., K. Sarabandi, K. Mcdonald, M. Whitt, and M. C. Dobson, "Michigan microwave canopy scattering model," International Journal of Remote Sensing, Vol. 11, No. 7, 1223-1253, 1990.
doi:10.1080/01431169008955090
12. Toure, A., K. P. B. Thomson, G. Edwards, R. J. Brown, and B. G. Btisco, "Adaptation of the MIMICS backscattering model to the agricultural context-wheat and canola at L and C bands," IEEE Transactions on Geoscience & Remote Sensing, Vol. 32, No. 1, 47-61, 1994.
doi:10.1109/36.285188
13. Mattia, F., T. L. Toan, G. Picard, F. I. Posa, A. D’Alessio, C. Notarnicola, A. M. Gatti, M. Rinaldi, G. Satalino, and G. Pasqua, "Multitemporal C-band radar measurements on wheat fields," IEEE Transactions on Geoscience & Remote Sensing, Vol. 41, No. 7, 1551-1560, 2003.
doi:10.1109/TGRS.2003.813531
14. Huang, B., Y. Chen, L. He, L. Tong, and Y. Wang, "Backscattering modeling of wheat using vector radiative transfer theory," Journal of Applied Remote Sensing, Vol. 9, 2015.
15. Kweon, S. K., J. H. Hwang, and Y. S. Oh, "Development of a scattering model for soybean fields and verification with scatterometer and SAR data at X-band," Journal of Electromagnetic Engineering and Science, Vol. 12, No. 1, 115-121, 2012.
doi:10.5515/JKIEES.2012.12.1.115
16. Du, Y., Y. L. Luo, and W. Z. Yan, "An electromagnetic scattering model for soybean canopy," Progress In Electromagnetics Research, Vol. 79, 209-223, 2008.
doi:10.2528/PIER07101603
17. Champion, I., L. Preot, and G. Guyot, "Generalized semi-empirical modelling of wheat radar response," International Journal of Remote Sensing, Vol. 21, No. 9, 1945-1951, 2000.
doi:10.1080/014311600209869
18. De Roo, R. D., Y. Du, F. T. Ulaby, and M. C. Dobson, "A semi-empirical backscattering model at L-band and C-band for a soybean canopy with soil moisture inversion," IEEE Transactions on Geoscience & Remote Sensing, Vol. 39, No. 4, 864-872, 2001.
doi:10.1109/36.917912
19. Kweon, S. K. and Y. Oh, "A modified water-cloud model with leaf angle parameters for microwave backscattering from agricultural field," IEEE Transactions on Geoscience and Remote Sensing, Vol. 53, No. 5, 2802-2809, 2015.
doi:10.1109/TGRS.2014.2364914
20. Kim, Y., T. Jackson, R. Bindlish, H. Lee, and S. Hong, "Monitoring soybean growth using L-, C-, and X-band scatterometer data," International Journal of Remote Sensing, Vol. 34, No. 11, 4069-4082, 2013.
doi:10.1080/01431161.2013.772309
21. Jia, M., L. Tong, Y. Zhang, and Y. Chen, "Multitemporal radar backscattering measurement of wheat fields using multifrequency (L, S, C, and X) and full-polarization," Radio Science, Vol. 48, 471-481, 2013.
doi:10.1002/rds.20048
22. Prakash, R., D. Singh, and N. P. Pathak, "The effect of soil texture in soil moisture retrieval for specular scattering at c-band," Progress In Electromagnetics Research, Vol. 108, No. 4, 177-204, 2010.
doi:10.2528/PIER10050403
23. Brogioni, M., S. Pettinato, G. Macelloni, S. Paloscia, P. Pampaloni, N. Pierdicca, and F. Ticconi, "Sensitivity of bistatic scattering to soil moisture and surface roughness of bare soils," International Journal of Remote Sensing, Vol. 31, No. 15, 4227-4255, 2010.
doi:10.1080/01431160903232808
24. Mittal, G. and D. Singh, "Critical analysis of microwave specular scattering response on roughness parameter and moisture content for bare periodic rough surfaces and its retrieva," Progress In Electromagnetics Research, Vol. 100, 129-152, 2010.
doi:10.2528/PIER09091705
25. Mclaughlin, D. J., Y. Wu, W. G. Stevens, X. Zhang, M. J. Sowa, and B. Weijers, "Fully polarimetric bistatic radar scattering behavior of forested hills," IEEE Transactions on Antennas and Propagation, Vol. 50, No. 2, 101-110, 2002.
doi:10.1109/8.997978
26. Liang, P., M. Moghaddam, L. E. Pierce, and R. M. Lucas, "Radar backscattering model for multilayer mixed-species forests," IEEE Transactions on Geoscience and Remote Sensing, Vol. 43, No. 11, 2612-2626, 2005.
doi:10.1109/TGRS.2005.847909
27. Ferrazzoli, P., L. Guerriero, and D. Solimini, "Simulating bistatic scatter from surfaces covered with vegetation," Journal of Electromagnetic Waves and Applications, Vol. 14, No. 2, 233-248, 2000.
doi:10.1163/156939300X00743
28. Karam, M. A., A. K. Fung, and Y. M. M. Antar, "Electromagnetic wave scattering from some vegetation samples," IEEE Transactions on Geoscience and Remote Sensing, Vol. 26, No. 6, 1988.
doi:10.1109/36.7711
29. Ulaby, F. T. and M. A. Elrayes, "Microwave dielectric spectrum of vegetation — part II: Dualdispersion model," IEEE Transactions on Geoscience and Remote Sensing, Vol. 25, No. 5, 550-557, 1987.
doi:10.1109/TGRS.1987.289833
30. Vine, D. M. L. and M. A. Karam, "Dependence of attenuation in a vegetation canopy on frequency and plant water content," IEEE Transactions on Geoscience and Remote Sensing, Vol. 34, No. 5, 1090-1096, 1996.
doi:10.1109/36.536525
31. Tiwari, R., R. K. Singh, D. S. Chauhan, O. P. Singh, R. Prakash, and D. Singh, "Microwave scattering for soil texture at X-band and its retrieval using genetic algorithm," Advances in Remote Sensing, Vol. 3, 120-127, 2014.
doi:10.4236/ars.2014.33010
32. Pierdicca, N., L. Pulvirenti, F. Ticconi, and M. Brogioni, "Radar bistatic configurations for soil moisture retrieval: A simulation study," IEEE Transactions on Geoscience and Remote Sensing, Vol. 46, No. 10, 3252-3264, 2008.
doi:10.1109/TGRS.2008.921495
33. Prakash, R., D. Singh, and N. P. Pathak, "Microwave specular scattering response of soil texture at X-band," Advances in Space Research, Vol. 44, No. 7, 801-814, 2009.
doi:10.1016/j.asr.2009.05.016
34. Bindlish, R. and A. P. Barros, "Parameterization of vegetation backscatter in radar-based, soil moisture estimation," Remote Sensing of Environment, Vol. 76, No. 1, 130-137, 2001.
doi:10.1016/S0034-4257(00)00200-5
Submit
