| 北京1号小卫星图像噪声评估 |
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| 引用本文： | 冉琼,迟耀斌,王智勇,陈正超.北京1号小卫星图像噪声评估[J].遥感学报,2009,13(3):554-558. |
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| 作者姓名： | 冉琼 迟耀斌 王智勇 陈正超 |
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| 作者单位： | 1. 中国科学院 遥感应用研究所, 北京 100101；2. 北京宇视蓝图信息技术有限公司, 北京 100096;2. 北京宇视蓝图信息技术有限公司, 北京 100096；3. 北京遥感信息研究所, 北京 100085;2. 北京宇视蓝图信息技术有限公司, 北京 100096;4. 中国科学院 对地观测与数字地球科学中心, 北京 100190 |
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| 基金项目： | 北京市科技计划项目(编号: Z08000102010801)和国家科技支撑计划项目(编号: 2007BAH151303)。 |
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| 摘 要： | 从理论和试验方面对图像的噪声评估方法进行了分析。结合北京1号小卫星特性, 进行了该类方法应用效能的评价, 讨论了分块评估噪声方法的最佳参数设置。选取满足噪声评估环境的图像, 实现了综合不同地表覆盖条件的北京1号小卫星图像噪声的评估。噪声评估结果与在轨测试情况的对比表明, 北京1号小卫星经过近3年的运行, 仍保持了较好的性能。
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| 关 键 词： | 噪声评估 北京1号小卫星 噪声标准差 |
| 收稿时间： | 9/5/2008 12:00:00 AM |
| 修稿时间： | 2008/10/30 0:00:00 |
Image-based nNoise e estimation of of Beijing-1 small satellite |
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| RAN Qiong,CHI Yao-bin,WANG Zhi-yong and CHEN Zheng-chao.Image-based nNoise e estimation of of Beijing-1 small satellite[J].Journal of Remote Sensing,2009,13(3):554-558. |
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| Authors: | RAN Qiong CHI Yao-bin WANG Zhi-yong and CHEN Zheng-chao |
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| Affiliation: | 1. Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China; 2. Beijing Landview Mapping Information Technology Company Beijing 100096, China |
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| Abstract: | Noise estimation plays significant role in payload assessment, image processing and data application. In this paper, considering characteristics of Beijing-1 small satellite,the the image-based noise estimation methods with their applicabilityy are appraised in theories considering characteristics of Beijing-1 small satellite and , their performances are compared and analyzed through experiments,. and Tthe parameters and model optimization are also also discussed for better assessment of noise. for accurate estimation of the noise. Synthetic With comprehensive analysis of noise estimation results from different land cover types, the Beijing-1 small satellite noise estimation of Beijing-1 small satellite is evaluated with its standard deviation.conducted with carefully selected images and from different land cover types. Comparison of the noise estimation from images acquired in 2008 and the in-orbit test right after launch in 2005 shows that noise level of the Beijing-1 small satellite does not change, the satellite has well-kept performance even after 3 years of operation. |
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| Keywords: | noise estimation Beijing-1 small satellite standard deviation |
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