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| 1 | Uncertainty analysis of cross-calibration for HJ-1 CCD camera显示文摘Radiometric calibration of sensor is the basis of quantitative remote sensing,and uncertainty analysis is critical to ensure the accuracy of cross-calibration.Therefore,firstly,cross-calibration formulas were improved by redefining calibration coefficient and spectral band matching factor.In these formulas,cci was redefined as the calibration coefficient of normalized apparent reflectance,and spectral band matching factor as the ratio of normalized apparent reflectance.Secondly,based on the contrast of ideal and actual conditions in cross-calibration,8 sources of cross-calibration uncertainty were proposed:calibration uncertainty of standard sensor;pixel matching uncertainty;spectral band matching factor uncertainty caused by site altitude setting error,atmospheric parameters setting error,surface spectrum source,surface bidirectional reflectance characteristic,and error of atmospheric radiative transfer model;and uncertainty caused by other factors which were not considered.Finally,the contribution of each uncertainty was further analyzed and discussed for the HJ-1 CCD camera.The results provide many valuable references for evaluating the feasibility of alternative cross-calibration measurements. | WANG Zuo XIAO PengFeng GU XingFa FENG XueZhi LI XiaoYing GAO HaiLiang LI Hui LIN JinTang ZHANG XueLiang | 2013 | Chinese Science Bulletin2013，58，7： | 3 |
| 2 | Parametric study of intrinsic thermal transport in vertically aligned multi-walled carbon nanotubes using a laser flash technique显示文摘 | Wei Lin Jintang Shang Wentian Gu C.P. Wong | 2011 | Carbon2011，，4： | 1 |
| 3 | Short-term variations and influencing factors of suspended sediment concentrations at the Heisha Beach,Guangdong,China显示文摘Knowledge of sediment variation processes is essential to understand the evolution mechanism of beach morphology changes.Thus,a field measurement was conducted at the Heisha Beach,located on the west coast of the Zhujiang River(Pearl River)Estuary,to investigate the short-term variation in suspended sediment concentrations(SSCs)and the relationship between the SSC and turbulent kinetic energy,bottom shear stress(BSS),and relative wave height.Based on extreme event analysis results,extreme events have a greater influence on turbulent kinetic energy than SSC.Although a portion of the turbulent kinetic energy dissipates directly into the water column,it plays an important role in suspended sediment motion.Most of the time,the wave-current interaction is strong enough to drive sediment incipience and resuspension.When combined,the wave-current interaction and wave-induced BSSs have a greater influence on suspended sediment transport and SSC variation than current-induced BSS alone.The relative wave height also has a strong correlation with SSC,indicating that the combined effect of water depth and wave height significantly impacts SSC variation.Water depth is mainly controlled by the tide on the beaches;thus,the effects of tides and waves should be conjunctively considered when analyzing the factors influencing SSC. | Jintang Ou Haoyan Dong Liangwen Jia Xiangxin Luo Zixiao He Kanglin Chen Jing Liu Yitong Lin Mingdong Yu Mingen Liang | 2022 | Acta Oceanologica Sinica2022，41，5： | 0 |
| 4 | Self-Healing Behavior of Phosphate Coating Post-Sealed with Molybdate显示文摘The phosphated zinc layer was post-sealed with molybdate to obtain the composite coating without pores.The composition of the formed coating was investigated. The corrosion behavior of the coated samples was studied.The coated samples were first scratched and subsequently corroded in a neutral salt spray( NSS) chamber for 2-72 h; the microstructure of the corrosion products was analyzed via SEM and EDS; and the self-healing performance was discussed. The coating obtained contains Zn_3( PO_4)_2· 4H_2 O,Mo_2O_3 and MoO_4^(2-). The electrochemical impedance first increases and then decreases with the immersion time. However,after immersion for 6 days,it remains at about 10 kΩ·cm^2,much higher than the value for the single-treated samples without corrosion. Micro structural observations show that the corrosion products in scratch increase in size and finally cover the whole scratch completely. The initial corrosion products have high P,Mo and O contents but almost no Cl,while in later stages the first three components decrease and Cl increases. The corrosion products form a compact mass of needle-like crystals,effectively inhibiting zinc corrosion. The composite coating exhibits good self-healing. | Bilan Lin Yuye Xu Jintang Lu | 2017 | Journal of Harbin Institute of Technology(New Series)2017，24，4： | 0 |
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