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1.郑州科技学院,河南 郑州 450064
2.河南省智能信息处理与控制工程技术研究中心,河南 郑州 450064
3.军事科学院系统工程研究院,北京 100010
4.中国航天系统科学与工程研究院,北京 100045
5.陆军装备部驻沈阳地区军事代表局驻长春地区第一军事代表室,吉林 长春 130000
[ "周 斌(1979-),男,河南修武人,博士,2001、2005、2012年于军械工程学院分别获得学士、硕士、博士学位,主要从事光电信息采集与处理等方面的研究。E-mail:whelmmail@126.com" ]
[ "张 瑜(1987-),男,河北无极人,博士,助理研究员,2009、2011、2015年于军械工程学院分别获得学士、硕士、博士学位,主要从事航天总体论证和顶层设计等研究工作。E-mail:zhangyuoec@163.com" ]
收稿日期:2020-12-24,
修回日期:2021-02-23,
纸质出版日期:2021-07-15
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周斌,张瑜,王海伟等.混合像元分解在氧气吸收被动测距中的应用[J].光学精密工程,2021,29(07):1549-1558.
ZHOU Bin,ZHANG Yu,WANG Hai-wei,et al.Application of mixed pixel decomposition in passive ranging based on oxygen absorption[J].Optics and Precision Engineering,2021,29(07):1549-1558.
周斌,张瑜,王海伟等.混合像元分解在氧气吸收被动测距中的应用[J].光学精密工程,2021,29(07):1549-1558. DOI: 10.37188/OPE.20212907.1549.
ZHOU Bin,ZHANG Yu,WANG Hai-wei,et al.Application of mixed pixel decomposition in passive ranging based on oxygen absorption[J].Optics and Precision Engineering,2021,29(07):1549-1558. DOI: 10.37188/OPE.20212907.1549.
针对雨雪、雾霾等天气条件下氧气吸收被动测距受大气和气溶胶等复杂背景光谱影响严重的问题,采用混合像元分解技术对提高复杂背景条件下的测距精度进行了研究。分析了高光谱图像像元混合机理,以雨滴端元为例建立了复杂天气条件下目标与背景的混合像元模型;讨论了复杂天气条件下目标光谱的提取方法,提出了复杂天气氧气吸收被动测距的基本流程;最后,对不同距离处小雨、重度霾、中雪3种典型复杂天气条件下的卤钨灯目标进行了被动测距实验。实验结果表明,混合像元分解方法可快速提取目标光谱,与多次循环采集平均法、背景消除法相比测距精度有较大提升,不同的距离及天气条件下的测距精度分别提高到3.39%、5.81%和4.36%,可满足实际飞行目标辐射光谱的快速采集与测距精度要求。
Passive ranging of oxygen absorption under weather conditions such as rain, snow, and haze is severely affected by complex background spectra such as those of the atmosphere and aerosols. Mixed pixel decomposition technique was used to improve the range accuracy under such complex backgrounds. Firstly, the pixel mixing mechanism of hyperspectral image was analyzed, and the mixed pixel of the target and background under complex weather conditions was established by taking the endmember of a rain drop as an example. Then, the method of extracting the target spectrum under complex weather conditions was discussed, and the basic flow of passive ranging was proposed. Finally, the passive ranging experiments were carried out for halogen tungsten lamp targets under the conditions of light rain, heavy haze, and moderate snow at different distances. Experimental results show that the mixed pixel decomposition method can quickly extract the target spectrum and improve the ranging accuracy compared to the multi-cycle acquisition average method and background elimination method. Ranging accuracies can be improved to 3.39%, 5.81%, and 4.36% under the three different weather conditions, respectively. This method can meet the requirements of fast acquisition, quick processing, and high ranging accuracy of the radiation spectrum for actual flight targets.
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