摘要
提出了冰雷达数据处理的流程,详细论述了冰雷达数据处理中常规修正的关键技术:静态校正、增益控制、带通滤波以及偏移处理等。以中国第24次南极科学考察(CHINARE 24)所获取的Dome A地区30 km×30 km范围冰雷达原始数据处理作为实例,提取得到了该区域冰盖内部等时层埋深以及冰盖的冰厚数据。通过插值展现了冰盖等时层以及冰岩界面的三维空间形态,结合该区域ICESat冰盖表面高程数据,构建出了Dome A地区涵盖冰盖表面、冰盖等时层以及冰岩界面形态特征的三维模型。
A method of radio-echo sounding data processing is proposed, and several key techniques, such as static correction, gain control, band-pass filter and migration process, are described in detail. The radio-echo sounding data of a 900 km2 area in Dome A, Antarctica obtained by CHINARE 24 is used as an example. We show that the depth of the isochronous layers and the ice thickness of the bedrock can be extracted from the data. Furthermore, a three- dimensional model of the isochronous layers and the bedrock is generated using a suitable interpolation method. Finally, an entire 3 D model, including the isochronous layers and the bedrock at Dome A is constructed by combining radio-echo sounding data with ICESat data.
出处
《极地研究》
CAS
CSCD
北大核心
2013年第2期197-204,共8页
Chinese Journal of Polar Research
基金
国家重点基础研究发展计划(973计划)(2012CB957702
2010CB950301
2013CBA01804)
国家高技术研究发展计划(863计划)(2010AA09Z103和2011AA040202)
国家重点实验室开放基金(12E02)
国家自然科学基金(41101071)
极地战略基金(20110203)
"十二五"专项(CHINARE2012-02-02)资助
关键词
冰雷达Dome
A数据处理
等时层
三维模型
Radio-echo Sounding, Dome A, Data processing, Isochronous layer, 3D Modeling
