预应力技术对建筑结构形式的影响

对预应力技术在混凝土中的应用作了简要介绍，系统地分析了预应力技术对建筑形式的影响，并对应力技术的发展趋势作了展望，指出预应力技术是内部控制结构中力的传递的有效方法。     

遥感中的高光谱技术及应用

简要介绍了高光谱的概念、高光谱成像光谱技术及其相关的定标技术,并介绍了有关领域中高光谱的应用,据此反映高光谱技术在遥感中的重要作用。     

基于小靶标法的星载CCD相机MTF在轨检测研究

星载CCD相机成像质量在轨检测关系到卫星遥感数据的应用和未来卫星遥感器的发展,合理、有效和实用的方法是获取可靠检验结果的重要保障.在传统的刃边法基础上,介绍并验证了一种新的点靶标方法.点靶标方法具有即适用于较高分辨率卫星遥感器的检验,同时也满足对较低分辨率检验的特点.     

节能降耗提高矿山效益

节能降耗是每一个矿山提高经济效益的有效途径。我们采取提高球磨机处理能力，降低单耗；利用“分时计价”政策，采用“避峰作业”；使用新设备等措施节能降耗，提高矿山经济效益。     

光谱辐射计波长定标新方法的研究

在空间、野外等环境下光谱辐射计常常需要进行波长定标,通常的室内定标法无法满足其要求,为此,本文通过对稀土氧化物中氧化铒与氧化镝的光谱特性和稳定性的研究,认为它们非常适合作为光谱辐射计波长定标参考板的主要材料,该种参考板的研制成功将改变现有波长定标仅能在室内进行的限制,从而解决了不同环境要求波长定标的难题。本参考板也可作为室内波长定标的标准。     

Atmospheric CO2 retrieval with a look-up-table based method by combining near and thermal infrared spectra

In order to precisely retrieve the atmospheric CO2 , a retrieval method based on both near infrared （NIR） and thermal infrared （TIR） is established firstly. Then a look-up-table （LUT） based fast line-by-line radiative transfer model （RTM） was integrated into the retrieval procedure to accelerate radiative transfer calculations. The LUT stores gas absorption cross-sections as a function of temperature, pressure and wavenumber. It could greatly reduce calculating time in radiative transfer compared to direct line-by-line method. Then retrieval was simulated using NIR, TIR and both bands. The retrieved CO2 profiles suggest joint approach could reconstruct CO2 profile better than those using NIR or TIR alone. Joint retrieval using both bands simultaneously could provide better constrain to CO2 vertical distribution in the whole troposphere.     

湖泊水体高光谱遥感反演总磷的地统计算法设计

高光谱遥感应用于内陆湖泊水质监测具有较好的发展前景,但由于内陆湖泊水体光学环境的时空多变性,如何高效利用水体高光谱特征信息,降低数据冗余度,发展高精度的水质参数反演模型具有重要的意义。针对上述问题,以巢湖为例,将遗传算法和地统计学相结合,利用环境一号(HJ-1A)卫星HSI高光谱遥感数据,建立了基于协同克里格遗传算法的湖泊水质总磷浓度高光谱遥感反演模型。实验结果显示,与传统遗传算法比较,协同克里格遗传算法模拟的ME、RMSE分别提高了128.2%、53%。经总磷实测值和反演值比对,建模和检验的相关系数R2分别为0.85、0.77。反演结果表明:协同克里格遗传算法通过利用克里格插值对传统遗传算法目标函数优化改进,使其具备克里格最佳局部估计能力,能够有效提高反演的精度。     

Satellite image blind restoration based on surface fitting and multivariate model

Owing to the blurring effect from atmosphere and camera system in the satellite imaging, a blind image restoration algorithm is proposed which includes the modulation transfer function （MTF） estimation and the image restoration. In the MTF estimation stage, based on every degradation process of satellite imaging-chain, a combined parametric model of MTF is given and used to fit the surface of normalized logarithmic amplitude spectrum of degraded image. In the image restoration stage, a maximum a posteriori （MAP） based edge-preserving image restoration method is presented which introduces multivariate Laplacian model to characterize the prior distribution of wavelet coefficients of original image. During the image restoration, in order to avoid solving high nonlinear equations, optimization transfer algorithm is adopted to decom- pose the image restoration procedure into two simple steps： Landweber iteration and wavelet thresholding denoising. In the numerical experiment, the satellite image restoration results from SPOT-5 and high resolution camera （HR） of China ＆ Brazil earth resource satellite （CBERS-02B） ane compared, and the proposed algorithm is superior in the image edge preservation and noise inhibition.     

降低碘耗的途径

碘盐生产过程中碘酸钾的添加系统、碘酸钾添加控制办法与碘酸钾的添加稳定性,对于保证碘盐合格率、降低生产成本有重要影响。本文从这三个方面进行分析,以期对从事加碘工作的同行有所帮助。     

关于老卤回溶净化处理的方案

针对制盐厂老卤处理问题,提出一种简单又切实可行的方案.该方案能有效降低老卤沉淀泥中盐硝含量,再生一部分卤水.延长老卤池清淤周期,经过卤水净化后延缓设备结垢,既提高了经济效益,又节能环保.