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2 个结果
  • 简介:介绍了GDAL和NetCDF在图像数据处理和栅格数据调度上的帮助和优势,提出了一种新的影像金字塔模型构建方法,从底层开发的关键技术上做了改进优化,提高了影像重采样方法的运行效率,在此研究领域上提供了一定的理论和实践基础。

  • 标签: GDAL NETCDF 影像金字塔 跨距读取
  • 简介:Inthispaper,wereportedamultiwavelengthpassivelyQ-switchedYb3+:GdAl3(BO3)4solid-statelaserwithtopologicalinsulatorBi2Te3asasaturableabsorber(SA)forthefirsttime,tothebestofourknowledge.Bi2Te3nanosheetswerepreparedbythefacilesolvothermalmethod.TheinfluenceofthreeBi2Te3densitiesonthelaseroperationwascompared.Themaximumaverageoutputpowerwasupto57mWwithapulseenergyof511.7nJ.Theshortestpulsewidthwasmeasuredtobe370nswith110kHzpulserepetitionrateand40mWaveragepower.Thelaseroperatedatthreewavelengthssimultaneouslyat1043.7,1045.3,and1046.2nm,ofwhichthefrequencydifferenceswerewithintheterahertzwaveband.OurworksuggeststhatsolvothermalsynthesizedBi2Te3isapromisingSAforsimultaneouslymultiwavelengthlaseroperation.

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