本文選題：衛(wèi)星測(cè)高 + 南極��； 參考：《冰川凍土》2016年02期

【摘要】：基于衛(wèi)星測(cè)高數(shù)據(jù),國際上先后發(fā)布了ICESat DEM、Bamber DEM等全南極DEM.相對(duì)于傳統(tǒng)高度計(jì),大軌道傾角、長重訪周期的設(shè)計(jì)使Cryo Sat-2具有更大的數(shù)據(jù)覆蓋范圍以及更加密集的軌道覆蓋;同時(shí),SARIn模式的啟用也提高了Cryo Sat-2對(duì)于南極邊緣區(qū)域的監(jiān)測(cè)能力.針對(duì)利用Cryo Sat-2數(shù)據(jù)提取DEM問題,對(duì)Croy Sat-2的軌跡覆蓋特征、數(shù)據(jù)濾波方法、最優(yōu)內(nèi)插參數(shù)選取以及DEM精度驗(yàn)證等方面進(jìn)行了探討,并利用克里金插值法生成了東南極PANDA斷面考察沿線1 km分辨率的DEM.結(jié)果表明:通過與ICESat數(shù)據(jù)對(duì)比,發(fā)現(xiàn)PANDA斷面考察沿線DEM整體高程精度約為(1.57±3.30)m;但是,局部區(qū)域高程精度分析表明,DEM精度具有不均一性,隨著坡度的增加DEM高程精度逐漸下降,高程穩(wěn)定性也同時(shí)下降.
[Abstract]:Based on the satellite altimetry data, ICESat Demm Bamber DEM has been published in the whole Antarctic.Compared with the traditional altimeter, the design of long revisiting period makes Cryo Sat-2 have more data coverage and more dense orbit coverage than traditional altimeters, and the use of Cryo Sat-2 model also improves the monitoring ability of Cryo Sat-2 to the Antarctic marginal region.Aiming at the problem of extracting DEM from Cryo Sat-2 data, the trace coverage feature, data filtering method, optimal interpolation parameter selection and DEM precision verification of Croy Sat-2 are discussed.Using the Kriging interpolation method, the 1 km resolution of the East Antarctic PANDA section is generated.The results show that by comparing with the ICESat data, it is found that the overall elevation accuracy of DEM along the PANDA section is about 1.57 鹵3.30m.However, the local area elevation accuracy analysis shows that the Dem accuracy is uneven, and the accuracy of DEM elevation decreases gradually with the increase of slope.Height stability also decreases.
【作者單位】： 武漢大學(xué)中國南極測(cè)繪研究中心;極地測(cè)繪科學(xué)國家測(cè)繪地理信息局重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金項(xiàng)目(41376187;41076126) 中國極地科學(xué)戰(zhàn)略研究基金項(xiàng)目(20120107) 民用航天“十二五”預(yù)先研究項(xiàng)目(D040103) 南北極環(huán)境綜合考察與評(píng)估專項(xiàng)(CHINARE2015-02-04)資助
【分類號(hào)】：P228.3;P208
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本文編號(hào)：1739816