Ecological Water Remote Sensing Quantitative Research In The Field Spectroradiometer Data Acquisition And Processing,

On the basis of the spectral data needed in mo del building and validating in of Eco-water quantitative investigation with remote sensing, spectral data was collected and processed in Maoergai district in upper Minjiang River.The research content includes:(1) On the basis of analyzing the sorts of field spectrum and the type of data needed in quantitative investigation of Eco-water with remote sensing,the principle of field spectral collection, the influence factors of field spectral collection, such as spectralon panels,illumination situation,atmospheric characteristics,characteristics of target objective, the experiment project was made which mainly includes instrument selection,time arrangement,distribution of spot of spectral collection,recording means of field spectral data etc, at the same time Spectrometer operation method,instrument care were made.(2) Field spectrum was collected according to the experiment project.(3) Field spectral data was transformed by Envi (remote sensing software) and IDL(interactive data language), it is more convenient to process field spectral data in Envi spectral library. Field spectral data was smoothed to reduce the noise effect contained in Field spectral data. Much of transformation of field spectrum such as Spectral Derivative,Spectral Reciprocal,Spectral Logarithm,Spectral Quotation,Spectral Resampling was accomplished which could provide enough parameter for building model in quantitative investigation of Eco-water with remote sensing.(4) spectral database was built by the functionality of Envi based on the field spectrum which has been processed.Spectral collection provide data for quantitative investigation remote sensing, To be searched,analyzed more convenient and utilized in combination with remote sensing data, spectral database was built...