Statistics – Applications
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.529e..25k&link_type=abstract
Proceedings of the Workshop on POLinSAR - Applications of SAR Polarimetry and Polarimetric Interferometry (ESA SP-529). 14-16 Ja
Statistics
Applications
Scientific paper
The paper briefly reports the opportunities of remote sensing for precision farming, a coming main focus in agriculture. MW-remote sensig may play an important role because of its weather independence. In particular polarimetric information with SAR- systems will be a powerful tool to enhance the accuracy of the determination of biophysical parameters of agricultural crops. In the former SIR-C/X-SAR missions the cross-polarized C-band backscatter value Chv as well as the coefficient Lhh/Lvv could be shown to detect the amount of biomass of cereals very well. In another study conducted earlier in the vegetation period with the airborne E-SAR during the Pro Smart project "Vitalität" the ratio Lhh/Xvv correlated well with the biomass of winter barley. From these data a map of the variability of the biomass within barley fields could be generated. Foreseeable advantages in precision farming that can be achieved by remote sensing are: • tracing target areas with abnormal appearance; early recording of hidden faults in field crops and on site identification of their causes • improved partitioning of fields into zones of uniform crop management • mapping of the spatial expansion of diseases and pests in field crops throughout the growing season; revision and enhancement of measures of pest control • continuous or stage dependent mapping of the crop nutrient demand, e.g. nitrogen; revision and enhancement of measures of fertilizer application • successive control of the effectiveness of crop management actions. Successful application of remote sensing in precision farming depends on the availability of ready to use products for the farmers. In order to transform remote sensing data in practicable site specific applications close cooperation between the operators of satellite systems and agro-consultants will be necessary.
Hawlitschka S.
Kühbauch W.
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