海洋学报(中文版)
海洋學報(中文版)
해양학보(중문판)
ACTA OCEANOLOGICA SINICA
2014年
11期
142-149
,共8页
秦平%沈钺%牟冰%郝艳玲%朱建华%崔廷伟
秦平%瀋鉞%牟冰%郝豔玲%硃建華%崔廷偉
진평%침월%모빙%학염령%주건화%최정위
HJ-1 CCD%悬浮物%叶绿素a%进化建模%黄海
HJ-1 CCD%懸浮物%葉綠素a%進化建模%黃海
HJ-1 CCD%현부물%협록소a%진화건모%황해
HJ-1 CCD%total suspended matter%chlorophylla%evolutionary modeling%the Yellow Sea
本文利用实测数据集,发展了基于进化建模方法的 HJ-1 CCD 黄海悬浮物(TSM)和叶绿素a浓度(Chla)遥感反演模型,建模过程中有针对性地设计了适合水色反演的端点集和函数集,并利用转基因方法引入水色先验知识。经实测数据检验,TSM 反演的平均相对误差约为31%(相关系数R2为0.96),Chla反演误差约为33%(R2为0.88)。分析了模型对输入误差的敏感性,当输入端引入±5%的误差时,模型误差的波动在大多数情形下都可控制在±10%以内。与神经网络模型相比,本文发展的进化模型具有检验精度高、结构简单等优势。利用不同季节的黄、东海实测数据进行了模型精度的独立检验。本文的研究工作表明,进化建模方法适用于水色遥感反演建模问题,可由程序自动生成多个满足精度要求、结构形式多样的显式模型,为水色反演应用提供了多种选择,对于拥有数百个波段的高光谱数据水色反演具有更大的应用潜力。本文最后探讨了进化建模方法的改进方向。
本文利用實測數據集,髮展瞭基于進化建模方法的 HJ-1 CCD 黃海懸浮物(TSM)和葉綠素a濃度(Chla)遙感反縯模型,建模過程中有針對性地設計瞭適閤水色反縯的耑點集和函數集,併利用轉基因方法引入水色先驗知識。經實測數據檢驗,TSM 反縯的平均相對誤差約為31%(相關繫數R2為0.96),Chla反縯誤差約為33%(R2為0.88)。分析瞭模型對輸入誤差的敏感性,噹輸入耑引入±5%的誤差時,模型誤差的波動在大多數情形下都可控製在±10%以內。與神經網絡模型相比,本文髮展的進化模型具有檢驗精度高、結構簡單等優勢。利用不同季節的黃、東海實測數據進行瞭模型精度的獨立檢驗。本文的研究工作錶明,進化建模方法適用于水色遙感反縯建模問題,可由程序自動生成多箇滿足精度要求、結構形式多樣的顯式模型,為水色反縯應用提供瞭多種選擇,對于擁有數百箇波段的高光譜數據水色反縯具有更大的應用潛力。本文最後探討瞭進化建模方法的改進方嚮。
본문이용실측수거집,발전료기우진화건모방법적 HJ-1 CCD 황해현부물(TSM)화협록소a농도(Chla)요감반연모형,건모과정중유침대성지설계료괄합수색반연적단점집화함수집,병이용전기인방법인입수색선험지식。경실측수거검험,TSM 반연적평균상대오차약위31%(상관계수R2위0.96),Chla반연오차약위33%(R2위0.88)。분석료모형대수입오차적민감성,당수입단인입±5%적오차시,모형오차적파동재대다수정형하도가공제재±10%이내。여신경망락모형상비,본문발전적진화모형구유검험정도고、결구간단등우세。이용불동계절적황、동해실측수거진행료모형정도적독립검험。본문적연구공작표명,진화건모방법괄용우수색요감반연건모문제,가유정서자동생성다개만족정도요구、결구형식다양적현식모형,위수색반연응용제공료다충선택,대우옹유수백개파단적고광보수거수색반연구유경대적응용잠력。본문최후탐토료진화건모방법적개진방향。
By using the in-situ measuring data,this study developed retrieval models of chlorophylla (Chla)and total suspended matter (TSM)for HJ-1 CCD data in the Yellow Sea based on the evolutionary modeling method. The terminal and function set of the evolutionary modeling method were designed to be adapted to retrieval of wa-ter constituents,and the transgene operator was employed to insert and maintain the prior knowledge.The average percentage difference (APD)for TSM was 31% (the correlation coefficientR2 =0.96),and that for Chla was 33%(R2 =0.88).The error sensitivity of the retrieval models was analyzed,and the output errors were generally less than ±10% when introducing ±5% error of remote sensing reflectance.Compared with neural network method, the evolutionary models have higher accuracy and simpler structures.In addition,in-situ data with different sea-sons was employed to validate the accuracy of the retrieval models.This study shows that the evolutionary model-ing method is applicable for retrieval of water constituents from ocean color remote sensed data.Many explicit models with well accuracy and different structures could be obtained automatically,and they are of potential appli-cations for hyperspectral data.Finally,we discussed how to improve the method in the near future.