资源简介

摘要： 高分五号卫星上搭载的我国自主研发的全谱段光谱成像仪是从可见光到长波红外光谱范围的星载多光谱成像仪，具有广泛的应用前景。对卫星影像进行质量评价，既是对遥感卫星是否满足设计指标的验证与检验，也可以为影像的处理与应用提供参考。利用信噪比、清晰度、信息量、辐射不均一性4个指标对高分五号全谱段光谱成像仪进行影像质量评价，并以美国陆地卫星Landsat 8影像为参考进行对比分析。结果表明：高分五号卫星全谱段光谱成像仪短波红外谱段的信噪比（320.44~388.42）略高于可见近红外谱段（208.24~238.03）；近—短波红外谱段的清晰度（0.82~0.91）要高于其余谱段，尤其是长波红外谱段（0.01~0.21）；可见短波红外谱段的信息量（9.01~9.97）要高于中长波红外谱段（5.71~8.31）；所有12个谱段的辐射不均一性均小于2%。与Landsat 8的比较结果表明：在清晰度方面，全谱段光谱成像仪可见近红外谱段优于Landsat 8，其他谱段接近Landsat 8；在信息量方面，可见短波红外谱段与Landsat 8比较接近，但是B11、B12两个分裂窗谱段差距较大，分别相差5.23和5.61；在信噪比方面GF-5 VIMI仍有待进一步改善，又以B1、B2、B6 3个谱段落后Landsat 8最大，分别相差280.41、226.84和151.92。 关键词： 高分五号;  全谱段光谱成像仪;  影像质量评价;  Landsat 8     Abstract: Gaofen-5(GF-5) satellite was successfully launched on May 29, 2018. The Visual and Infrared Multispectral Imager(VIMI) developed independently by China is a multi-spectral imager in the range of visible band to long-wave infrared band, which has broad application prospects. The quality assessment of satellite image is not only the verification of whether the remote sensing satellite meets the design criteria, but also the reference for image processing and application. In this paper, the quality assessment for VIMI is provided, which provides reference for the processing and application of the image. Four indicators, named the Signal-to-Noise Ratio (SNR), clarity, information content and radiation heterogeneity, were used for quality assessment, and were compared with Landsat 8 images. The results show that the SNR of the shortwave infrared band (320.44~388.42) is slightly higher than that of the visible near-infrared band(208.24~238.03). The clarity (0.82~0.91) in the near-shortwave infrared band is higher than that in the other bands, especially in the long-wave infrared band (0.01~0.21). The information content of short-wave infrared band (9.01~9.97) is higher than that of medium-long-wave infrared band (5.71~8.31). The radiation heterogeneity of all 12 bands is less than 2%. The results of comparison with Landsat 8 show that ①the clarity of B1~B4 is better than Landsat 8 and this of other bands are close to Landsat 8,②for information content, B1~B10 of VIMI is close to Landsat 8, while this of B11 and B12 is less than Landsat 8 with 5.23 for B11 and 5.61 for B12,(3)for SNR, GF-5 VIMI still needs to be further improved, with 280.41、226.84 and 151.92 less than Landsat 8 for B1,B2 and B6.

相关资源

1. 水质遥感监测的关键要素叶绿素a的反演算法研究进展
2. 基于无人机遥感技术的森林参数获取研究进展
3. 基于无线传感器网络的森林生态系统观测试验平台构建
4. 基于无人机激光雷达的森林冠层高度分析
5. 多源时序国产卫星影像的森林火灾动态监测
6. 基于无人机遥感技术的台风灾害倒伏绿化树木检测

下载说明

·如果您发现该资源不能下载，请通知管理员.gissky@gmail.com

·为确保下载的资源能正常使用，请使用[WinRAR v3.8]或以上版本解压本站资源,缺省解压密码www.gissky.net ，如果是压缩文件为分卷多文件，请依次下载每一个文件，并按照顺序命名为1.rar,2.rar,3.rar...，然后鼠标右击1.rar解压.

·为了保证您快速的下载速度，我们推荐您使用[网际快车]等专业工具下载.

·站内提供的资源纯属学习交流之用,如侵犯您的版权请与我们联系.