Research On GDP Development Based On Long Time Series Night Lighting Inversion

Since the reform and opening up,especially since 2000,the economic growth rate of Jiangxi Province is remarkable.The high-speed economic growth of Jiangxi Province is of great significance to the rise of the central part of Jiangxi Province and the balanced development of the whole country.Gross National Product(GDP)is one of the main indicators to show the economic level of a country or region.However,there are many limitations in using GDP data to study the economic development level.In recent years,researchers mostly use DMSP / Ols and NPP / VIIRS night lighting data to study the spatialization of GDP.However,the main problem of DMSP / Ols Night Light Image is that it has not been corrected for on-board radiation,so the image data of different years are not comparable But the main disadvantage is that the image is not processed transient light source and background noise,which affects the accuracy of its application.In order to solve the above problems,this paper obtains comparable DMSP / OLS night lighting image data from 1992 to 2013 through mutual correction and continuous correction,and analyzes its accuracy.Then,using the corrected DMSP / OLS stable lighting data as the data source,the GDP of Jiangxi Province is spatialized,and the GDP distribution density maps of Jiangxi Province in seven years are obtained Then the paper analyzes the dynamic process and spatial distribution pattern of GDP growth of Jiangxi Province in 22 years.The results of GDP spatialization in Jiangxi Province from 2013 to 2018 were obtained by using the pre-processed NPP / VIIRS night light image The results of nppviirs-based spatialization were compared with the results of Jiangxi GDP spatialization simulation based on DMSP / OLS night lighting images by Quantitative analysis and qualitative analysis,and the accuracy and quality were compared.The main conclusions of this study are as follows:First,by making comparable DMSP / Ols Night Lighting Image data of Jiangxi Province from 1992 to 2013,it is proved that it is feasible to use the corrected image data to spatialize the GDP of Jiangxi Province.Secondly,the paper obtains the GDP density map of Jiangxi Province by means of spatialization,and analyzes the dynamic process and spatial distribution pattern of the GDP change of Jiangxi Province in 22 years.On the basis of the above analysis,this paper puts forward some suggestions and discussions on the economic development of Jiangxi Province.Third,the results of GDP spatialization in Jiangxi Province from 2013 to 2018 were obtained from pre-processed NPP / VIIRS night light images,and the results were compared with DMSP / Ols night light data qualitatively and quantitatively.The results show that NPP / VIIRS night light image has more advantages.