| Technology and Methodology |
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Research on Standard Preprocessing Flow for HJ-1A HSI Level 2 Data Product |
| NIU Li-ming 1， MENG Ji-hua 2，3， WU Bing-fang 2， CHEN Xue-yang 2， DU Xin 2， ZHANG Fei-fei 2 |
| (1.Beijing Wisewatch IT Company, Beijing 100101, China； 2.Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China； 3.State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University, Beijing 100101,China) |
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Abstract To deal with the Level 2 HSI data from the newly-launched HJ-1A satellite, this paper introduced in details the entire flow and relevant algorithms for data preprocessing. The introduction includes calibration, vertical stripes elimination, and atmospheric correction geometric correction. Standard spectral reflectance products with precise geo-locations were produced. Spectral reflectance data from EO-1 Hyperion of close dates was used to simulate the band reflectance of HJ-1A HSI. Comparisons of spectral reflectance data between simulated and actual HJ-1A HSI were made to validate the effect of the data preprocessing. The average correlation coefficient of spectral reflectance between actual and simulated HJ-1A HSI is 0.947 with its standard deviation being 0.017, suggesting a high consistency. The mean and standard deviation of differential bands between real and simulated HJ-1A HSI are close to 0. The result shows that the reflectance from HJ-1A HSI is consistent with that of simulated data from Hyperion, and hence the data processing flow could provide necessary support for quantitative use of HJ-1A HSI data.
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| Keywords
Remote sensed imagery
Automatic interpretation
Present condition
Development trend
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Issue Date: 22 March 2011
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2011,
Vol. 23
