汾渭斷陷帶陸態(tài)網(wǎng)GPS站噪聲剔除
發(fā)布時(shí)間:2018-01-21 04:43
本文關(guān)鍵詞: GAMIT/GLBOK QOCA 高精度坐標(biāo) 時(shí)間序列 共模誤差 非構(gòu)造噪聲 出處:《測(cè)繪科學(xué)》2016年09期 論文類型:期刊論文
【摘要】:針對(duì)汾渭斷陷帶及鄰近地區(qū)2011—2013年陸態(tài)網(wǎng)絡(luò)工程36個(gè)GPS連續(xù)站和227個(gè)流動(dòng)觀測(cè)區(qū)域站的GAMIT/GLBOK處理結(jié)果中存在的非構(gòu)造噪聲,借助QOCA軟件剔除連續(xù)站位移序列中的周期性成分和共模誤差等非構(gòu)造形變的信息,使地殼監(jiān)測(cè)中GPS連續(xù)站水平運(yùn)動(dòng)速度的精度提高約0.3mm/a,垂直運(yùn)動(dòng)速度的精度提高了約0.6mm/a。針對(duì)流動(dòng)觀測(cè)區(qū)域站中的噪聲,提出了使用QOCA軟件對(duì)GPS連續(xù)站的后處理參數(shù)信息構(gòu)建Delaunay三角網(wǎng),結(jié)合反距離內(nèi)插算法,實(shí)現(xiàn)了GPS區(qū)域站中非構(gòu)造噪聲的剔除,使GPS區(qū)域站流動(dòng)監(jiān)測(cè)中水平運(yùn)動(dòng)速度的精度提高了約0.6mm/a,垂直運(yùn)動(dòng)速度的精度提高約1.7mm/a,為地震監(jiān)測(cè)提供了精確的基礎(chǔ)數(shù)據(jù)。
[Abstract]:Non-existence of GAMIT/GLBOK processing results for 36 GPS continuous stations and 227 mobile observation stations in the Fen-Wei fault depression zone and its adjacent areas during 2011-2013. Construction noise. The information of non-structural deformation such as periodic component and common-mode error in the displacement sequence of continuous station is eliminated by QOCA software. The accuracy of horizontal velocity of GPS continuous station in crustal monitoring is improved by about 0.3 mm / a, and the accuracy of vertical velocity of motion is improved by about 0.6 mm / a. In this paper, QOCA software is used to construct Delaunay triangulation network based on the post-processing parameter information of GPS continuous station. Combining with the inverse distance interpolation algorithm, the non-construction noise elimination of GPS regional station is realized. The accuracy of horizontal velocity and vertical velocity are improved by 0.6 mm / a and 1.7 mm / a respectively, which provides accurate basic data for seismic monitoring.
【作者單位】: 陜西工業(yè)職業(yè)技術(shù)學(xué)院;國(guó)家測(cè)繪地理信息局第一大地測(cè)量隊(duì);中國(guó)地震局第二監(jiān)測(cè)中心;西安科技大學(xué);
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(41174083)
【分類號(hào)】:P228.4;P315.7
【正文快照】: 0引言中國(guó)陸態(tài)網(wǎng)絡(luò)工程已建成百上千個(gè)GPS臺(tái)站,這些臺(tái)站的觀測(cè)方式有連續(xù)的(連續(xù)觀測(cè)站)和不連續(xù)的(區(qū)域流動(dòng)觀測(cè)站),但結(jié)果中都包含了大量的噪聲,這已得到國(guó)內(nèi)外很多學(xué)者的證實(shí)[1],剔除臺(tái)站中的噪聲對(duì)獲取地殼真實(shí)的運(yùn)動(dòng)速率很有幫助,能夠?yàn)榈卣痤A(yù)報(bào)提供第一手資料。本文研究
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