本文關(guān)鍵詞：高相干點(diǎn)地基InSAR的大氣延遲糾正　出處：《測繪科學(xué)》2017年01期 　論文類型：期刊論文

  更多相關(guān)文章： 地基合成孔徑雷達(dá)干涉測量 步進(jìn)頻率連續(xù)波 大氣延遲相位 高相干點(diǎn) 最小二乘法

【摘要】：針對(duì)目前地基合成孔徑雷達(dá)干涉測量技術(shù)中大氣影響造成的相位延遲校正方法存在的校正精度低、方法復(fù)雜、技術(shù)要求高等不足,提出了一種基于高相干點(diǎn)的地基InSAR大氣延遲相位函數(shù)模型校正方案。該方案不需多幅SAR影像,不需人工布點(diǎn),節(jié)省了大量人力物力。以高相干點(diǎn)的相干值作為權(quán)陣參與計(jì)算,該方法可得到更精確的校正結(jié)果。運(yùn)用該方法將地基雷達(dá)對(duì)山西省呂梁市林家坪工程滑坡獲取的數(shù)據(jù)進(jìn)行大氣延遲改正的實(shí)驗(yàn)。結(jié)果表明:所提方案不僅處理方法簡單,改正效果明顯,而且能滿足絕大多數(shù)類似工程的精度要求,更為經(jīng)濟(jì)實(shí)用。
[Abstract]:In view of the shortcomings of the current phase delay correction methods caused by atmospheric influence in the ground-based synthetic aperture radar interferometry technology, the correction accuracy is low, the method is complex, and the technical requirements are high. This paper presents a correction scheme for the delayed phase function model of ground-based InSAR atmosphere based on highly coherent points, which does not require multiple SAR images and does not require manual placement. It saves a lot of manpower and material resources and takes the coherent value of the high coherence point as the weight matrix to participate in the calculation. This method can obtain more accurate correction results. The experimental results of atmospheric delay correction by using the ground-based radar to the data obtained from the Linjiaping engineering landslide in Luliang City, Shanxi Province are shown as follows:. The proposed scheme is not only simple to deal with. The correction effect is obvious, and it can meet the precision requirement of most similar projects, which is more economical and practical.
【作者單位】： 中國地質(zhì)大學(xué)(北京)土地科學(xué)技術(shù)學(xué)院;
【基金】：基金委青年科學(xué)基金項(xiàng)目(41304012);基金委國家重大科研儀器設(shè)備研制專項(xiàng)(自由申請(qǐng)項(xiàng)目)(61427802);基金委重點(diǎn)項(xiàng)目(41330634);基金委面上項(xiàng)目(41374016) 2014年大學(xué)生創(chuàng)新性實(shí)驗(yàn)計(jì)劃項(xiàng)目(201411415040)
【分類號(hào)】：TN958
【正文快照】： 0引言近年來,地基雷達(dá)憑借其攜帶方便、操作靈活、精度高、分辨率高等優(yōu)越性,已后來居上地成為國外進(jìn)行形變監(jiān)測的重要手段。在我國,地基雷達(dá)的研究工作也進(jìn)入了起步階段。地基合成孔徑雷達(dá)干涉測量(ground—based synthetic aper-ture radar interferometry,GB-InSAR)是近十，

本文編號(hào)：1420368