發(fā)布時(shí)間：2018-05-19 19:40

  本文選題：地表沉降監(jiān)測(cè) + 時(shí)序差分干涉圖��； 參考：《東華理工大學(xué)》2015年碩士論文

【摘要】：我國(guó)是礦產(chǎn)資源大國(guó),尤其是煤礦資源,但隨著煤礦資源的大量開(kāi)采,各種生態(tài)環(huán)境問(wèn)題也接踵而至。尤其是礦區(qū)的地表沉陷帶來(lái)的負(fù)面影響日益突出。因此加強(qiáng)對(duì)礦區(qū)的沉降監(jiān)測(cè),獲取礦區(qū)的沉降信息,預(yù)防礦區(qū)沉降塌陷顯得日益緊迫。合成孔徑雷達(dá)干涉測(cè)量(In SAR,Interferometric Synthetic Aperture Radar)是一種新的空間對(duì)地觀測(cè)手段,其有別于傳統(tǒng)監(jiān)測(cè)手段,具有全天候、全天時(shí)、高精度(mm級(jí))、連續(xù)面狀監(jiān)測(cè)等特點(diǎn),彌補(bǔ)了常規(guī)監(jiān)測(cè)方法的缺陷,在礦區(qū)沉降監(jiān)測(cè)方面具有廣泛前景。獲取礦區(qū)時(shí)序形變圖的常規(guī)方法主要有小基線集法(SBAS,Small Baseline Subset)以及永久散射體法(PS,Permanent Scatterer)。但這兩種方法都需要對(duì)雷達(dá)差分干涉測(cè)量(D-In SAR,Differential Interferometric Synthetic Aperture Radar)數(shù)據(jù)做繁雜的后期處理才能得到時(shí)序沉降結(jié)果。本文在克服時(shí)空基線過(guò)長(zhǎng)導(dǎo)致的失相干現(xiàn)象基礎(chǔ)之上,運(yùn)用D-In SAR技術(shù)獲取礦區(qū)每個(gè)時(shí)間段的沉降量,進(jìn)行沉降累加得到時(shí)序形變圖,稱該方法為時(shí)序差分干涉圖法。本文以江西豐城某礦區(qū)為例,利用時(shí)序差分干涉圖法及小基線SBAS法對(duì)礦區(qū)進(jìn)行地表沉降監(jiān)測(cè)與分析,證明基于時(shí)序差分干涉圖法的可行性。主要研究?jī)?nèi)容如下:(1)系統(tǒng)闡述In SAR、D-In SAR技術(shù)的基本原理及數(shù)據(jù)處理流程;(2)選用覆蓋礦區(qū)的7景L波段ALOS PALSAR影像,利用本文提出的時(shí)序差分干涉圖方法提取礦區(qū)2007年6月14日至2008年3月17日的時(shí)間序列形變圖;(3)基于SABS技術(shù)對(duì)礦區(qū)進(jìn)行地表沉降監(jiān)測(cè),提取礦區(qū)同一時(shí)間段的累積形變量和時(shí)序形變圖,并將實(shí)驗(yàn)結(jié)果與基于時(shí)序差分干涉圖法提取出的實(shí)驗(yàn)結(jié)果做對(duì)比分析。
[Abstract]:China is a large country of mineral resources, especially coal mine resources, but with the massive exploitation of coal resources, a variety of ecological and environmental problems have followed. In particular, the negative effects of surface subsidence in mining areas are increasingly prominent. Therefore, it is more and more urgent to strengthen the monitoring of the subsidence of the mining area, to obtain the settlement information of the mining area and to prevent the subsidence of the mining area from collapsing. Synthetic Aperture Radar Interferometric Synthetic Aperture Radar) is a new space-to-earth observation method, which is different from the traditional monitoring method. It has the characteristics of all-weather, high-precision, continuous surface monitoring, etc. It makes up for the defects of conventional monitoring methods, and has a wide prospect in mining subsidence monitoring. The conventional methods for obtaining temporal deformation maps of mining areas are small Baseline subsets with small baselines and permanent scatterers with permanent scatterers. However, both of these two methods require complicated post-processing of D-In SAR differential Interferometric Synthetic Aperture Radar) data in order to obtain the time series settlement results. In this paper, on the basis of overcoming the phenomenon of incoherence caused by excessive spatiotemporal baselines, the subsidence of each time period in mining area is obtained by using D-In SAR technique, and the time series deformation diagram is obtained by sedimentation accumulation. The method is called sequential differential interferogram method. In this paper, a mining area in Fengcheng, Jiangxi Province, is used to monitor and analyze the surface subsidence of the mining area by using the time-series differential interferogram method and the small baseline SBAS method. The feasibility of the method based on the time-series differential interferogram is proved. The main contents of this study are as follows: (1) the basic principle and data processing flow of in SARN D-In SAR technology are described systematically. (2) 7 L band ALOS PALSAR images covering the mining area are selected. The time series deformation map of mining area from June 14, 2007 to March 17, 2008 is extracted by using the time series differential interferogram method proposed in this paper. The surface subsidence monitoring is carried out based on SABS technology. The cumulative shape variables and time series deformation maps of the same time period in the mining area are extracted and the experimental results are compared with those extracted from the time-series differential interferogram method.
【學(xué)位授予單位】：東華理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P642.26

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1 劉書鋼,徐曉峰;剪切干涉圖處理[J];光學(xué)學(xué)報(bào);1986年11期

2 孫啟明;;差分干涉圖計(jì)算方法研究[J];空氣動(dòng)力學(xué)學(xué)報(bào);1987年02期

3 楊仕潤(rùn),俞剛;干涉圖計(jì)算機(jī)處理[J];力學(xué)與實(shí)踐;1991年02期

4 向陽(yáng);;自動(dòng)分析具有閉合條紋干涉圖的新方法(英文)[J];光學(xué)機(jī)械;1992年01期

5 鄢靜舟,雷凡,周必方;干涉圖特征信息自動(dòng)采集方法[J];光學(xué)技術(shù);2000年01期

6 黃菁;朱日宏;陳磊;;基于樣本塊匹配的干涉圖延拓方法[J];光學(xué)學(xué)報(bào);2007年07期

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本文編號(hào)：1911380