NISAR Science Workshop 2015 Space Applications Centre MONITORING OF CROP GROWTH AND SOIL MOISTURE RETRIEVAL USING NISAR DATA HARI SHANKER SRIVASTAVA Indian Institute of Remote Sensing (IIRS), Indian Space Research Organization (ISRO), Dehradun 248001 (harishanker_srivastava@iirs.gov.in, hari.isro@gmail.com) https://scholar.google.co.in/citations?user=bbigsokaaaaj&hl=en https://www.researchgate.net/profile/hari_srivastava2 https://iirs.academia.edu/drharishankersrivastava/analytics#/overview NASA ISRO Synthetic Aperture Radar (NISAR) CITATION: Srivastava, H. S. (2015), Monitoring of crop growth and soil moisture using NISAR data, NISAR Science Workshop 2015, 19-20 Nov. 2015, Space Applications Centre (ISRO), Ahmedabad, India
NISAR Orbit Repeat Cycle Available Polarimetric Modes S-band L-band 747 km with 98 inclination 12 days Single Pol (SP): HH or VV SP: HH or VV Dual Pol (DP): HH/HV or DP: HH/HV or VV/VH VV/VH CP: RH/RV Compact Pol (CP): Quad Pol (QP): RH/RV HH/HV/VH/VV Quasi-Quad Pol (QQP): HH/HV and VH/VV Swath Width > 240 Km >240 Km Spatial Resolution 6.4m (Az); 2m-6m (Sl- Ra) Incidence Angle Range 33-47 deg 33-47 deg 6.9m (Az); 1.9m-30m (Sl-Ra) 2
Objectives Retrieval of Soil moisture and mapping and monitoring of agricultural crop parameters using multi frequency, multi incidence angle, polarimetric NISAR and RISAT SAR Surface and deeper layer soil moisture retrieval for bare soil under varying surface roughness conditions Surface and deeper layer soil moisture retrieval underneath crop covered soil Crop parameter retrieval (height, Volume, Plant moisture, fresh biomass, dry biomass) Yield estimation 3
RESPONSE OF SHORTER AND LONGER WAVELENGTHS TOWARDS DEEPER LAYER SOIL MOISTURE Srivastava, H.S., Patel, P. and Navalgund, R.R. (2006), How far SAR has fulfilled its expectation for soil moisture retrieval, Proc. of SPIE Vol. 6410 641001-1, pp. 01-12. [available online at: http://repository.ias.ac.in/89367/1/46p.pdf] NISAR Science Workshop, SAC Ahmedabad 19th & 20th Nov. 2015 4
MULTI-FREQUENCY SYNTHETIC APERTURE RADAR (SAR) RESPONSE TOWARDS DIFFERENT SURFACE ROUGHNESS CLASSES Srivastava, H.S. (2010), Monitoring of soil moisture using multi-parametric Synthetic Aperture Radar (SAR) data, Ph.D. Thesis, CSJM University, Kanpur (available online at openthesis.com) 5
MULTI-FREQUENCY & MULTI-POLARIZED DLR E-SAR RESPONSE TOWARDS SURFACE ROUGHNESS & SOIL PROFILE Srivastava, H.S., Patel, P. and Navalgund, R.R. (2006), How far SAR has fulfilled its expectation for soil moisture retrieval, Proc. of SPIE Vol. 6410 641001-1, pp. 01-12. [available online at: http://repository.ias.ac.in/89367/1/46p.pdf] 6
(a) (b) (c) (d) (More penetration for longer wavelengths and lower incidence angles) Henderson & Lewis (1998) Interaction of Radar signal with crop covered fields 7
Ulaby, et. al. (1986) Henderson & Lewis (1998) 8
EFFECT OF INCIDENCE ANGLE ON SAR SENSITIVITY TOWARDS VEGETATION COVER & SOIL MOISTURE Srivastava, H.S., Patel, P., Manchanda, M.L. and Adiga, S. (2002), An attempt to incorporate the effect of crop cover in soil moisture estimation using multi-incidence angle RADARSAT-1 SAR data, Asian Journal of Geoinformatics (SAR special issue), Vol. 02, No. 03, pp. 33-40 9
MULTI-FREQUENCY AND MULTI-POLARIZED SYNTHETIC APERTURE RADAR (SAR) RESPONSE TO SCATTERED TREES Srivastava, H. S., Patel, P., Sharma, Y. and Navalgund, R. R., Multi-frequency and multi-polarized SAR response to thin vegetation and scattered trees, Current Science, 2009, vol. 97 (03), pp.425-429. 10
MULTI-FREQUENCY MULTI-POLARIZED SAR RESPONSE TOWARDS FOREST PLANTATION Patel, P., Srivastava, H. S., Panigrahy, S. and Parihar, J. S. (2006), Comparative evaluation of the sensitivity of multipolarized multi-frequency SAR backscatter to plant density, International Journal of Remote Sensing, Vol. 27, Issue02, pp. 293-305 11
MULTI-FREQUENCY & MULTI-POLARIZED DLR E-SAR RESPONSE TOWARDS VEGETATION & SOIL PROFILE Srivastava, H.S., Patel, P. and Navalgund, R.R. (2006), How far SAR has fulfilled its expectation for soil moisture retrieval, Proc. of SPIE Vol. 6410 641001-1, pp. 01-12. [available online at: http://repository.ias.ac.in/89367/1/46p.pdf] 12
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Conclusion It has been observed that multi-frequency, multiincidence angle, multi-polarisation data are sensitive to different target parameters. L, S and C band multi-incidence angle polarimetric SAR data from NISAR and RISAT SAR data would provide information from different component of agricultural terrain. This in turn would be very useful in achieving improved accuracy for retrieval of surface and deeper layer soil moisture for bare as well as crop covered soil and mapping and monitoring of agricultural crop parameters like plant moisture, volume, fresh weight, dry weight and yield estimation. 20
Thanks 21