本文選題：粗差發(fā)現(xiàn) + 粗差定位　； 參考：《測(cè)繪通報(bào)》2016年06期

【摘要】：現(xiàn)有的基于LZD方法的DEM變形探測(cè)方法都是將表面變形作為粗差,采用不同的穩(wěn)健估計(jì)方法來(lái)探測(cè)。粗差具有發(fā)現(xiàn)和定位能力是粗差探測(cè)的前提,而現(xiàn)有方法均沒(méi)有進(jìn)行粗差發(fā)現(xiàn)和定位能力分析。本文首先采用判斷矩陣對(duì)其進(jìn)行了理論分析,然后對(duì)結(jié)果在不同類型地面的DEM進(jìn)行了試驗(yàn)。根據(jù)試驗(yàn)結(jié)果,任意2個(gè)判斷向量線性無(wú)關(guān),判斷矩陣中沒(méi)有零元素,相關(guān)數(shù)等于多余觀測(cè)個(gè)數(shù)。試驗(yàn)結(jié)果表明,DEM表面上無(wú)論多少粗差均具有發(fā)現(xiàn)和定位能力;基于LZD方法的DEM表面變形探測(cè)方法在理論上是完備的,可以正確地發(fā)現(xiàn)和定位粗差。
[Abstract]:The existing DEM deformation detection methods based on LZD method take the surface deformation as gross error and use different robust estimation methods to detect it. Gross error detection and location ability is the premise of gross error detection, but the existing methods do not carry out gross error detection and location ability analysis. In this paper, the judgment matrix is first used to analyze the results, and then the results are tested on the DEM of different types of ground. According to the experimental results, any two judgment vectors are linearly independent, and there are no zero elements in the judgment matrix, and the correlation number is equal to the number of redundant observations. The experimental results show that no matter how many gross errors on Dem surface, the DEM surface deformation detection method based on LZD method is complete in theory and can correctly detect and locate gross errors.
【作者單位】： 西南交通大學(xué)地球科學(xué)與環(huán)境工程學(xué)院;西南交通大學(xué)高速鐵路運(yùn)營(yíng)安全空間信息技術(shù)國(guó)家地方聯(lián)合工程實(shí)驗(yàn)室;中鐵第五勘測(cè)設(shè)計(jì)院集團(tuán)有限公司;
【基金】：中國(guó)鐵路總公司重大科研項(xiàng)目(2014G004-B);中國(guó)鐵路總公司科研試驗(yàn)任務(wù)(Z2013-038-5) 長(zhǎng)江學(xué)者和創(chuàng)新團(tuán)隊(duì)發(fā)展計(jì)劃(IRT13092)
【分類號(hào)】：P204
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本文編號(hào)：1859932