多源SAR影像監(jiān)測(cè)礦區(qū)建筑物三維位移場(chǎng)
[Abstract]:The differential interferometric (differential InSAR) technique of synthetic aperture radar (SAR) can only obtain the one-dimensional deformation information of radar line-of-sight (LoS). Based on the analysis of the three-dimensional spatial synthesis model of LoS deformation, the model and algorithm of combining multi-source synthetic aperture radar (SAR) images to solve the three-dimensional deformation of buildings are studied. In this algorithm, SAR images with different spatial geometry are used to obtain the deformation information of the target in different LoS directions, and the 3D deformation field of the target is solved jointly. The results show that the vertical displacement (that is, subsidence) inversed by the three-dimensional algorithm is consistent with the leveling data, and the root mean square error is 10 mm; east-west horizontal displacement field in accordance with the law of mining subsidence. Because the satellite flies in polar orbit, the three-dimensional algorithm is insensitive to the north-south displacement and the inversion accuracy is poor. The inclination value calculated by the three-dimensional displacement field and the root mean square error between the east-west horizontal deformation and the measured value are 鹵0.21 mm/m. and 鹵0. 06 mm/m., respectively.
【作者單位】: 中國(guó)礦業(yè)大學(xué)國(guó)土環(huán)境與災(zāi)害監(jiān)測(cè)國(guó)家測(cè)繪局重點(diǎn)實(shí)驗(yàn)室;中國(guó)測(cè)繪科學(xué)研究院;中國(guó)礦業(yè)大學(xué)(北京)地球科學(xué)與測(cè)繪工程學(xué)院;
【基金】:國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863)項(xiàng)目(2011AA120402) 國(guó)家自然科學(xué)基金項(xiàng)目(41272389,41071273) 江蘇高校優(yōu)勢(shì)學(xué)科建設(shè)工程項(xiàng)目(SA1102) 地理空間信息工程國(guó)家測(cè)繪地理信息局重點(diǎn)實(shí)驗(yàn)室基金項(xiàng)目(201303)
【分類(lèi)號(hào)】:TN957.52
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