• 항공우주산업기술동향
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• 제9권1호
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• pp.37-42
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• 2011

우리나라의 우주활동은 향후 10년 더욱 활발해질 것으로 기대된다. 국가 우주개발 중장기 계획에 따라 지난 10년간 4기의 위성이 발사된 반면, 2011-2020년 간 14기의 위성이 발사될 예정이다. 2021년 발사를 목표로 한국형발사체를 개발하고 있다. 그러므로 우리나라 우주개발의 향후 10년 간 목표달성을 위해서 항공우주개발의 중추적인 역할을 담당하고 있는 한국항공우주연구원의 소요인력을 예측하고 공급 계획을 수립하는 것은 너무나도 당연한 일이다. 본 논문에서는 과거 항우연의 예산과 인력과의 관계를 활용하여, 항우연의 인력을 예측하였다. 2020년경 인력은 1,000 ~ 1,400명 규모에 이를 것으로 예측되어, 향후 10년간 최소 400명의 인원이 필요한 것으로 전망된다.

• 대한원격탐사학회지
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• 제27권3호
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• pp.303-314
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• 2011

Surface albedo is an important parameter of the surface energy budget, and its accurate quantification is of major interest to the global climate modeling community. Therefore, in this paper, we consider the direct solution of kernel based bidirectional reflectance distribution function (BRDF) models for retrieval of normalized reflectance of high resolution satellite. The BRD effects can be seen in satellite data having a wide swath such as SPOT/VGT (VEGETATION) have sufficient angular sampling, but high resolution satellites are impossible to obtain sufficient angular sampling over a pixel during short period because of their narrow swath scanning when applying semi-empirical model. This gives a difficulty to run BRDF model inferring the reflectance normalization of high resolution satellites. The principal purpose of the study is to estimate normalized reflectance of high resolution satellite (RapidEye) through BRDF components from SPOT/VGT. We use semi-empirical BRDF model to estimated BRDF components from SPOT/VGT and reflectance normalization of RapidEye. This study used SPOT/VGT satellite data acquired in the S1 (daily) data, and within this study is the multispectral sensor RapidEye. Isotropic value such as the normalized reflectance was closely related to the BRDF parameters and the kernels. Also, we show scatter plot of the SPOT/VGT and RapidEye isotropic value relationship. The linear relationship between the two linear regression analysis is performed by using the parameters of SPOTNGT like as isotropic value, geometric value and volumetric scattering value, and the kernel values of RapidEye like as geometric and volumetric scattering kernel Because BRDF parameters are difficult to directly calculate from high resolution satellites, we use to BRDF parameter of SPOT/VGT. Also, we make a decision of weighting for geometric value, volumetric scattering value and error through regression models. As a result, the weighting through linear regression analysis produced good agreement. For all sites, the SPOT/VGT isotropic and RapidEye isotropic values had the high correlation (RMSE, bias), and generally are very consistent.