本文選題：深圳灣 + MODIS　； 參考：《華中師范大學(xué)》2015年碩士論文

【摘要】：近岸河口海灣水體較渾濁,屬于Ⅱ類水體。懸浮泥沙濃度是水體的最重要的三大水質(zhì)參數(shù)之一,對(duì)海岸帶沖淤變化進(jìn)程以及對(duì)水體生態(tài)環(huán)境變化都具有重要意義。傳統(tǒng)的船舶采樣方法既耗時(shí)又費(fèi)力,對(duì)于動(dòng)態(tài)變化極大的河口海灣監(jiān)測(cè)十分不利。遙感以其大面積高效率長(zhǎng)時(shí)序獲取數(shù)據(jù)的優(yōu)勢(shì),在水環(huán)境研究領(lǐng)域應(yīng)用越來(lái)越廣泛。本文以經(jīng)過驗(yàn)證的MODIS懸浮泥沙濃度(Suspended Sediment Concentration, SSC)反演結(jié)果為基礎(chǔ),建立HJ-1A/1B衛(wèi)星CCD影像的反演模型,開展深圳灣的懸浮泥沙濃度定量反演研究,驗(yàn)證了在不精確大氣校正條件下的參數(shù)反演的可行性,對(duì)于推動(dòng)環(huán)境衛(wèi)星的應(yīng)用發(fā)展具有積極意義。本文的主要貢獻(xiàn)如下：(1) MODIS影像SSC反演模型針對(duì)MODIS/Terra影像250m空間分辨率數(shù)據(jù),利用SeaDAS version 6.4官方軟件包進(jìn)行大氣校正獲得遙感反射率。結(jié)合2007、2008年兩年2個(gè)站位的同步實(shí)測(cè)懸浮泥沙濃度數(shù)據(jù)建立深圳灣的紅光/綠光波段比值敏感因子的反演模型。其中的指數(shù)模型,R2為0.80,均方根誤差為5.06,相對(duì)誤差為15%,能夠滿足反演精度要求。(2)基于MODIS的HJ-1A/1B衛(wèi)星CCD懸浮泥沙濃度RC、SSCI反演試驗(yàn)利用經(jīng)過精確的瑞利校正HJ-1A/1B衛(wèi)星CCD數(shù)據(jù)得出遙感反射率,以與HJ-1A/1B衛(wèi)星CCD數(shù)據(jù)準(zhǔn)同步的2009-2012年的指數(shù)模型提取的MODIS數(shù)據(jù)為基礎(chǔ),進(jìn)行懸浮泥沙濃度RC(Rayleigh Correction)方法反演試驗(yàn)。HJ-1A/1B衛(wèi)星CCD數(shù)據(jù)經(jīng)過精確的瑞利散射校正得出遙感反射率,以基線原理分析CCD紅光通道指數(shù)在不同渾濁程度的Ⅱ類水體中懸浮泥沙濃度所表現(xiàn)的基線高度變化,達(dá)到有效解決渾濁水體傳統(tǒng)水色遙感大氣校正剔除氣溶膠多次散射信號(hào)困難的問題,即懸浮泥沙濃度指數(shù)(Suspended Sediment Concentration Index, SSCI)方法。利用該方法計(jì)算的HJ-1A/1B衛(wèi)星CCD遙感反射率數(shù)據(jù),以與HJ-1A/1B衛(wèi)星CCD數(shù)據(jù)準(zhǔn)同步的2009-2012年指數(shù)模型提取的MODIS數(shù)據(jù)為基礎(chǔ),進(jìn)行懸浮泥沙濃度指數(shù)SSCI反演試驗(yàn)。(3) HJ-1A/1B影像RC和SSCI懸浮泥沙濃度反演以及精度驗(yàn)證。建立MODIS數(shù)據(jù)輔助的基于RC方法的HJ-1A/1B影像單波段、波段比值、單個(gè)CCD和4個(gè)CCD的深圳灣懸浮泥沙濃度指數(shù)反演模型,以及建立MODIS數(shù)據(jù)輔助的基于SSCI方法的單波段的單個(gè)CCD和4個(gè)CCD的深圳灣懸浮泥沙濃度指數(shù)反演模型,并進(jìn)行精度驗(yàn)證和評(píng)價(jià)。模型檢驗(yàn)表明,對(duì)于任意選取的CCD傳感器數(shù)據(jù),其RC模型和SSCI模型都有較高的決定系數(shù)R2和較低的均方根誤差RMSE (R20.76,RMSE≤11.78),模型能夠滿足反演要求。其中,基于MODIS輔助的HJ-1A/1B衛(wèi)星CCD傳感器SSCI紅光波段的指數(shù)模型最適合反演深圳灣水域的懸浮泥沙濃度,模型反演的懸浮泥沙產(chǎn)品表明,該方法能為MODIS退役之后的以HJ-1A/1B衛(wèi)星CCD數(shù)據(jù)源的懸浮泥沙濃度延續(xù)觀測(cè)具有積極意義,也可以為其他缺乏同步實(shí)測(cè)數(shù)據(jù)的傳感器水環(huán)境參數(shù)反演提供借鑒。
[Abstract]:The water body of the coastal estuary is cloudy and belongs to the class II water body. The suspended sediment concentration is one of the most important three water quality parameters of the water body. It is of great significance to the process of erosion and deposition in the coastal zone and the changes in the ecological environment of the water body. The traditional method of ship sampling is not only time-consuming and laborious, but also for the monitoring of the dynamic changing estuarine Bay. Remote sensing is more and more widely used in the field of water environment research with its large area and high efficiency and long time sequence. Based on the verified MODIS suspended sediment concentration (Suspended Sediment Concentration, SSC) inversion results, the inversion model of HJ-1A/1B satellite CCD image is established, and the suspended mud in the Shenzhen Bay is carried out. The quantitative inversion of sand concentration has proved the feasibility of parameter inversion under the imprecise atmospheric correction. It is of great significance to promote the application and development of environmental satellites. The main contributions of this paper are as follows: (1) the SSC inversion model of MODIS image is aimed at the spatial resolution data of MODIS/Terra image 250m, and uses the official soft soft of SeaDAS version. An inversion model of the red / green band ratio sensitivity factor of Shenzhen Bay is established with the simultaneous measurement of suspended sediment concentration data from 2 stations in 20072008 years and two years. The index model, R2 is 0.80, the root mean square error is 5.06, and the phase pair error is 15%, which can satisfy the requirement of the inversion accuracy (2). MODIS based HJ-1A/1B satellite CCD suspended sediment concentration RC, SSCI inversion experiment using accurate Rayleigh correction HJ-1A/1B satellite CCD data to obtain remote sensing reflectance, based on the MODIS data extracted from the 2009-2012 year exponential model of the HJ-1A/1B satellite CCD data, the suspended sediment concentration RC (Rayleigh) method The inversion test.HJ-1A/1B satellite CCD data is corrected by accurate Rayleigh scattering, and the reflectance of remote sensing is obtained. The baseline principle is used to analyze the baseline height variation of the suspended sediment concentration of the CCD red channel index in the class II water body of different turbidity degree, and to effectively solve the traditional water color remote sensing atmosphere correction and eliminate the aerosol more than the aerosol. The problem of the secondary scattering signal is difficult, that is, the Suspended Sediment Concentration Index (SSCI) method. The HJ-1A/1B satellite CCD reflectance data calculated by this method is based on the MODIS data extracted from the 2009-2012 year exponential model of the HJ-1A/1B satellite CCD data, and the suspended sediment concentration index is carried out. SSCI inversion test. (3) inversion of suspended sediment concentration in HJ-1A/1B image RC and SSCI and accuracy verification. Establish RC based RC based HJ-1A/1B image single band, band ratio, single CCD and 4 CCD in Shenzhen Bay suspended sediment concentration index model, as well as single band based on SSCI method aided by building MODIS data A single CCD and 4 CCD in Shenzhen Bay suspended sediment concentration index inversion model is used to verify and evaluate the accuracy of the model. The model test shows that the RC model and SSCI model have higher determination coefficient R2 and lower mean square root error RMSE (R20.76, RMSE < 11.78) for any selected CCD sensor data, and the model can meet the inversion requirements. The exponential model of the red light band of the HJ-1A/1B satellite CCD sensor based on MODIS is most suitable for the inversion of the suspended sediment concentration in the waters of Shenzhen Bay. The suspended sediment products from the model show that this method can be of positive significance for the continuous observation of the suspended sediment concentration of the HJ-1A/1B satellite CCD data source after the decommissioning of MODIS. It can be used for reference for other water environmental parameters inversion without synchronous measured data.

【學(xué)位授予單位】：華中師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P715.7

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