Article(id=1281687939822367214, tenantId=1146029695717560320, journalId=1281212996840067084, issueId=1281687939268719086, articleNumber=null, orderNo=null, doi=10.11728/cjss2026.02.2025-0052, pmid=null, cstr=32142.14.cjss.2025-0052, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1744041600000, receivedDateStr=2025-04-08, revisedDate=1746720000000, revisedDateStr=2025-05-09, acceptedDate=null, acceptedDateStr=null, onlineDate=1783507817464, onlineDateStr=2026-07-08, pubDate=1773504000000, pubDateStr=2026-03-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1783507817464, onlineIssueDateStr=2026-07-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1783507817464, creator=13701087609, updateTime=1783507817464, updator=13701087609, issue=Issue{id=1281687939268719086, tenantId=1146029695717560320, journalId=1281212996840067084, year='2026', volume='46', issue='2', pageStart='265', pageEnd='566', issueExtLink='null', onlineDate='null', pubDate='1773504000000', pubDateStr='2026-03-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1783507817332, creator='13701087609', updateTime=1783508069046, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1281688995138605320, tenantId=1146029695717560320, journalId=1281212996840067084, issueId=1281687939268719086, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1281688995138605321, tenantId=1146029695717560320, journalId=1281212996840067084, issueId=1281687939268719086, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=334, endPage=347, ext={EN=ArticleExt(id=1281687940061442544, articleId=1281687939822367214, tenantId=1146029695717560320, journalId=1281212996840067084, language=EN, title=Retrieval of the Imaginary Part of the Dielectric Constant in Mountain Glaciers Using Airborne Radar Based on a Dual Rough Interface Numerical Simulation Model, columnId=1281687939994333679, journalTitle=Chinese Journal of Space Science, columnName=Research Article, runingTitle=null, highlight=null, articleAbstract=
As a key indicator of global climate change and an essential freshwater resource, the accurate acquisition of multiple physical parameters of glaciers holds significant importance for global climate change research, ecological conservation, and water resource planning. In China, glaciers are predominantly mountain glaciers distributed in high-altitude regions. Constrained by harsh environments and complex terrain, traditional in-situ detection methods fail to achieve large-scale continuous monitoring of internal glacier parameters. Satellite-borne glacier remote sensing, meanwhile, faces limitations in resolution and interference from complex ground clutter in mountainous glacier regions, and thus has yet to be operationalized. Airborne radar, with its superior spatial resolution and flexible detection capabilities, has become a critical technical tool for glacier monitoring and research. However, airborne detection of mountain glaciers still confronts challenges posed by undulating ice surfaces and complex subglacial topography: scattering clutter from the uneven ice surface interferes with radar signal interpretation and precise inversion of key parameters, while the intricate subglacial structure and scattering losses caused by ice surface topography interact with dielectric losses within the ice, impeding accurate inversion of glacier dielectric constants. To address these challenges, this study integrates airborne ultra-wideband radar detection data from mountain glaciers with the Pseudo-Spectral Time Domain (PSTD) numerical simulation method. A coupled model of ice surface-subglacial dual interface topography and dielectric parameters is established. Through two-dimensional PSTD electromagnetic simulations, the interaction mechanism between topographic scattering and ice dielectric loss is elucidated. Furthermore, an inversion method for the imaginary part of the ice layer dielectric constant in measured regions is proposed based on dynamic range analysis. For the measured data from Laohugou Glacier No. 12, iterative optimization converges the estimated imaginary part value to 6.0×10–4. The relative error between the estimated imaginary part and the theoretical mean is 21%. Cross-validation between simulation results and theoretical models demonstrates that this method effectively improves the inversion accuracy of glacier dielectric parameters in complex terrain by decoupling the synergistic interference between topographic relief and dielectric parameters, thereby offering a viable solution for studying internal dielectric properties of glaciers.
, authors=Ziyi SHA
1, 2, Di ZHU
1, 2, Dongjin BAI
1, Guoqing XU
1, Jianying MA
1, Tianao LIU
1, 2, authorsList=Ziyi SHA, Di ZHU, Dongjin BAI, Guoqing XU, Jianying MA, Tianao LIU, authorCompany=null, correspAuthors=Di ZHU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1281687959271355054, articleId=1281687939822367214, tenantId=1146029695717560320, journalId=1281212996840067084, language=CN, title=基于双粗糙界面数值仿真模型的机载雷达山岳冰川介电虚部反演, columnId=1281687940136940017, journalTitle=空间科学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
冰川作为全球气候变化的关键指示体和重要的淡水资源, 其多物理参数的精准获取具有重要意义. 中国山岳冰川环境恶劣、地形复杂, 传统就位探测方法难以大面积连续监测. 星载冰川透视探测由于受分辨率制约和复杂地面杂波的干扰, 至今无业务化应用. 机载雷达空间分辨率高、探测方式灵活, 已成为冰川监测和研究的重要技术手段. 但机载雷达进行探测时, 依然面临冰表起伏和冰底复杂地形的影响, 例如冰表杂波干扰信号解译与参数反演; 冰底地形散射与冰内介电损耗耦合, 阻碍介电常数准确反演. 本研究结合机载超宽带雷达数据与伪谱时域(PSTD)数值模拟, 构建冰表–冰底双界面地形与介电参数耦合模型. 通过二维PSTD仿真揭示地形散射与介电损耗互作用机制, 提出基于动态范围分析的冰层介电常数虚部反演方法. 应用老虎沟12号冰川实测数据, 经迭代优化将虚部估计值收敛至6.0×10–4, 相对误差为21%. 仿真与理论模型交叉验证表明, 该方法有效解耦地形与介电参数的协同干扰, 提升了复杂地形区冰川介电参数反演精度.
, authors=沙子意
1, 2, 朱迪
1, 2, 白东锦
1, 徐国庆
1, 马剑英
1, 刘天澳
1, 2, authorsList=沙子意, 朱迪, 白东锦, 徐国庆, 马剑英, 刘天澳, authorCompany=null, correspAuthors=朱迪, authorNote=
 |
朱迪 男, 1978年11月出生于陕西省杨凌市, 现为中国科学院国家空间科学中心研究员, 博士生导师, 主要研究方向为星载与机载遥感有效载荷设计、数字信号处理及卫星数据反演等. E-mail: zhudi@mirslab.cn |
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40(4): W04205, articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1281687959497847471, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, xref=1, ext=[AuthorCompanyExt(id=1281687959506236080, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, companyId=1281687959497847471, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1National Space Science Center, Chinese Academy of Sciences, Beijing 100190), AuthorCompanyExt(id=1281687959514624689, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, companyId=1281687959497847471, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1中国科学院国家空间科学中心 北京 100190)]), AuthorCompany(id=1281687959581733554, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, xref=2, ext=[AuthorCompanyExt(id=1281687959594316467, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, companyId=1281687959581733554, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2University of Chinese Academy of Sciences, Beijing 100049), AuthorCompanyExt(id=1281687959602705076, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, companyId=1281687959581733554, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2中国科学院大学 北京 100049)])], figs=[ArticleFig(id=1281687963687957216, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.1, caption=
Half space domain design used in simulators, figureFileSmall=6zB3R5CI/x2ZFK+jIzd6tQ==, figureFileBig=YlVcZKx0wGAOXj6hUIlQ7A==, tableContent=null), ArticleFig(id=1281687963784426209, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图1, caption=
模拟器使用的半空间域设计, figureFileSmall=6zB3R5CI/x2ZFK+jIzd6tQ==, figureFileBig=YlVcZKx0wGAOXj6hUIlQ7A==, tableContent=null), ArticleFig(id=1281687964006724322, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.2, caption=
Dielectric models with three different attenuation mechanisms, figureFileSmall=M4SH4EjRGhmaTsNxudtoCw==, figureFileBig=/sj/5w4L6SeKJG5fOIMgaA==, tableContent=null), ArticleFig(id=1281687964082221795, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图2, caption=
三种不同衰减机制的介电模型, figureFileSmall=M4SH4EjRGhmaTsNxudtoCw==, figureFileBig=/sj/5w4L6SeKJG5fOIMgaA==, tableContent=null), ArticleFig(id=1281687964136747748, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.3, caption=
Medium model and radargram of A1, A2, A3 scenarios, figureFileSmall=GtLr8r93Xw9hum6k7u4x8g==, figureFileBig=qc34RBqTs39sNdpqAYQFBg==, tableContent=null), ArticleFig(id=1281687964203856613, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图3, caption=
场景A1, A2, A3的介质模型及雷达图像, figureFileSmall=GtLr8r93Xw9hum6k7u4x8g==, figureFileBig=qc34RBqTs39sNdpqAYQFBg==, tableContent=null), ArticleFig(id=1281687964279354086, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.4, caption=
Medium model and radargram of B1, B2, B3 scenarios, figureFileSmall=HtNmZzPeF+kGBoC6NUNfpw==, figureFileBig=+idQ9eji3lzFE8oVo/sU6g==, tableContent=null), ArticleFig(id=1281687964375823079, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图4, caption=
场景B1, B2, B3的介质模型及雷达图像, figureFileSmall=HtNmZzPeF+kGBoC6NUNfpw==, figureFileBig=+idQ9eji3lzFE8oVo/sU6g==, tableContent=null), ArticleFig(id=1281687964434543336, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.5, caption=
Medium model and radargram of C1, C2, C3 scenarios, figureFileSmall=Ibj1W3s9TGeNoALt8HmU7Q==, figureFileBig=jbg2HsRJe4Wg4IxSRxLBJg==, tableContent=null), ArticleFig(id=1281687964510040809, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图5, caption=
场景C1, C2, C3的介质模型及雷达图像, figureFileSmall=Ibj1W3s9TGeNoALt8HmU7Q==, figureFileBig=jbg2HsRJe4Wg4IxSRxLBJg==, tableContent=null), ArticleFig(id=1281687964593926890, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.6, caption=
Partial detection results after preliminary processing, figureFileSmall=irEXJO+phYKvMeZoN2yu9g==, figureFileBig=1+PfwuYyLHT+UrBZmQl7Qw==, tableContent=null), ArticleFig(id=1281687966229705452, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图6, caption=
初步处理后的部分探测结果, figureFileSmall=irEXJO+phYKvMeZoN2yu9g==, figureFileBig=1+PfwuYyLHT+UrBZmQl7Qw==, tableContent=null), ArticleFig(id=1281687966321980141, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.7, caption=
Processed geometric data of glacier surface and basal topography in Laohugou Glacier No.12 (sampling points 6900~7500), figureFileSmall=ppgWjbmRQPbWHwGQ7JFdfA==, figureFileBig=Dmmrez9BDjrrQ55d/10msg==, tableContent=null), ArticleFig(id=1281687966389089006, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图7, caption=
处理后的老虎沟12号冰川冰表/冰底地形几何数据(测点6900~7500), figureFileSmall=ppgWjbmRQPbWHwGQ7JFdfA==, figureFileBig=Dmmrez9BDjrrQ55d/10msg==, tableContent=null), ArticleFig(id=1281687966468780783, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.8, caption=
Waveform of radar transmitted signal, figureFileSmall=xwxyX6wNh6k2wj8fv0hagw==, figureFileBig=qULlcQlohO52SQQAbgpXiQ==, tableContent=null), ArticleFig(id=1281687966552666864, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图8, caption=
雷达发射信号的波形, figureFileSmall=xwxyX6wNh6k2wj8fv0hagw==, figureFileBig=qULlcQlohO52SQQAbgpXiQ==, tableContent=null), ArticleFig(id=1281687966649135857, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.9, caption=
Radargram with ice imaginary permittivity of 1×10–3, figureFileSmall=L+jMjzazxVX9Uq6C/DjIxA==, figureFileBig=L2N870Ou/KBwJqnUNEfq6A==, tableContent=null), ArticleFig(id=1281687966720439026, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图9, caption=
冰层虚部为1×10–3时的雷达图像, figureFileSmall=L+jMjzazxVX9Uq6C/DjIxA==, figureFileBig=L2N870Ou/KBwJqnUNEfq6A==, tableContent=null), ArticleFig(id=1281687966795936499, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Fig.10, caption=
Flowchart of the inversion method for the imaginary part of dielectric constant in ice layer, figureFileSmall=QN4BCtUghCgjxDKWCuPWlQ==, figureFileBig=z18ixUrqlyUZhYLwCK3iRA==, tableContent=null), ArticleFig(id=1281687966871433972, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=图10, caption=
冰层介电常数虚部值反演方法流程, figureFileSmall=QN4BCtUghCgjxDKWCuPWlQ==, figureFileBig=z18ixUrqlyUZhYLwCK3iRA==, tableContent=null), ArticleFig(id=1281687966938542837, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Tab.1, caption=
Parameters used in simulation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 参数值 |
|---|
| 探测器参数 | 飞行高度/m | 150 |
|
| 雷达参数 | 中心频率/MHz | 550 |
| 带宽/MHz | 300 |
| 信号形式 | 高斯脉冲 |
|
| 模拟域参数 | 域宽度/m | 200 |
| 域高度/m | 500 |
), ArticleFig(id=1281687967022428918, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=表1, caption=
仿真中使用的参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 参数值 |
|---|
| 探测器参数 | 飞行高度/m | 150 |
|
| 雷达参数 | 中心频率/MHz | 550 |
| 带宽/MHz | 300 |
| 信号形式 | 高斯脉冲 |
|
| 模拟域参数 | 域宽度/m | 200 |
| 域高度/m | 500 |
), ArticleFig(id=1281687967118897911, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Tab.2, caption=
Three media models and their attenuation mechanisms
, figureFileSmall=null, figureFileBig=null, tableContent=
| 介质模型编号 | 实部$ {\varepsilon }' $ | 虚部$ {\varepsilon {''}}$ | 衰减机制 |
|---|
| 1 | 3.170 | 0 | 无吸收衰减 |
| 2 | 3.170 | 3.5×10–6 | 恒定吸收衰减 |
| 3 | 3.149~3.153 | (3.99~5.01)×10–6 | 动态吸收衰减 |
), ArticleFig(id=1281687967190201080, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=表2, caption=
三种介质模型及其衰减机制
, figureFileSmall=null, figureFileBig=null, tableContent=
| 介质模型编号 | 实部$ {\varepsilon }' $ | 虚部$ {\varepsilon {''}}$ | 衰减机制 |
|---|
| 1 | 3.170 | 0 | 无吸收衰减 |
| 2 | 3.170 | 3.5×10–6 | 恒定吸收衰减 |
| 3 | 3.149~3.153 | (3.99~5.01)×10–6 | 动态吸收衰减 |
), ArticleFig(id=1281687967257309945, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Tab.3, caption=
Echo dynamic range of three models
, figureFileSmall=null, figureFileBig=null, tableContent=
介质模型 编号 | 冰表回波 强度/dB | 冰底回波 强度/dB | 回波动态 范围/dB |
|---|
| 1 | 21.998 | 8.317 | 13.681 |
| 2 | 21.998 | 8.280 | 13.718 |
| 3 | 21.925 | 8.331 | 13.594 |
), ArticleFig(id=1281687967316030202, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=表3, caption=
三种模型的回波动态范围
, figureFileSmall=null, figureFileBig=null, tableContent=
介质模型 编号 | 冰表回波 强度/dB | 冰底回波 强度/dB | 回波动态 范围/dB |
|---|
| 1 | 21.998 | 8.317 | 13.681 |
| 2 | 21.998 | 8.280 | 13.718 |
| 3 | 21.925 | 8.331 | 13.594 |
), ArticleFig(id=1281687967399916283, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Tab.4, caption=
Numerical simulation results of different rough ice surfaces
, figureFileSmall=null, figureFileBig=null, tableContent=
| 场景编号 | 均方根高度/m | 相关长度/m | 冰表回波强度/dB | 冰底回波强度/dB | 回波动态范围/dB |
|---|
| A1 | 0 | 1.1 | 21.925 | 7.943 | 13.983 |
| A2 | 0.55 | 1.1 | –15.570 | –23.124 | 7.554 |
| A3 | 5.50 | 1.1 | –19.971 | –21.664 | 1.693 |
| B1 | 1.1 | 0.55 | –14.422 | –22.331 | 7.909 |
| B2 | 1.1 | 1.65 | –10.095 | –18.510 | 8.415 |
| B3 | 1.1 | 5.50 | –5.190 | –12.131 | 6.942 |
), ArticleFig(id=1281687967487996668, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=表4, caption=
不同粗糙冰表的数值仿真结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 场景编号 | 均方根高度/m | 相关长度/m | 冰表回波强度/dB | 冰底回波强度/dB | 回波动态范围/dB |
|---|
| A1 | 0 | 1.1 | 21.925 | 7.943 | 13.983 |
| A2 | 0.55 | 1.1 | –15.570 | –23.124 | 7.554 |
| A3 | 5.50 | 1.1 | –19.971 | –21.664 | 1.693 |
| B1 | 1.1 | 0.55 | –14.422 | –22.331 | 7.909 |
| B2 | 1.1 | 1.65 | –10.095 | –18.510 | 8.415 |
| B3 | 1.1 | 5.50 | –5.190 | –12.131 | 6.942 |
), ArticleFig(id=1281687967576077053, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Tab.5, caption=
Numerical simulation results of rough ice bottoms
, figureFileSmall=null, figureFileBig=null, tableContent=
| 场景编号 | 冰表均方根高度/m | 冰表相关长度/m | 冰表回波强度/dB | 冰底回波强度/dB | 回波动态范围/dB |
|---|
| C1 | 0 | 1.1 | 21.925 | –8.141 | 30.067 |
| C2 | 0.55 | 1.1 | –15.570 | –21.017 | 5.446 |
| C3 | 5.50 | 1.1 | –19.972 | –22.883 | 2.911 |
), ArticleFig(id=1281687967689323262, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=表5, caption=
粗糙冰底的数值仿真结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 场景编号 | 冰表均方根高度/m | 冰表相关长度/m | 冰表回波强度/dB | 冰底回波强度/dB | 回波动态范围/dB |
|---|
| C1 | 0 | 1.1 | 21.925 | –8.141 | 30.067 |
| C2 | 0.55 | 1.1 | –15.570 | –21.017 | 5.446 |
| C3 | 5.50 | 1.1 | –19.972 | –22.883 | 2.911 |
), ArticleFig(id=1281687967756432127, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Tab.6, caption=
Echo dynamic range for four scenarios
, figureFileSmall=null, figureFileBig=null, tableContent=
| 场景编号 | 冰表均方根高度/m | 冰表相关长度/m | 冰底均方根高度/m | 冰底相关长度/m | 回波动态范围/dB |
|---|
| A1 | 0 | 1.1 | 0 | 1.1 | 13.983 |
| A3 | 5.50 | 1.1 | 0 | 1.1 | 1.693 |
| C1 | 0 | 1.1 | 0.55 | 1.65 | 30.067 |
| C3 | 5.50 | 1.1 | 0.55 | 1.65 | 2.911 |
), ArticleFig(id=1281687967844512512, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=表6, caption=
四种场景的回波动态范围
, figureFileSmall=null, figureFileBig=null, tableContent=
| 场景编号 | 冰表均方根高度/m | 冰表相关长度/m | 冰底均方根高度/m | 冰底相关长度/m | 回波动态范围/dB |
|---|
| A1 | 0 | 1.1 | 0 | 1.1 | 13.983 |
| A3 | 5.50 | 1.1 | 0 | 1.1 | 1.693 |
| C1 | 0 | 1.1 | 0.55 | 1.65 | 30.067 |
| C3 | 5.50 | 1.1 | 0.55 | 1.65 | 2.911 |
), ArticleFig(id=1281687967911621377, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Tab.7, caption=
Parameters used in simulation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 参数值 |
|---|
| 探测器参数 | 飞行高度/m | 150 |
|
| 雷达参数 | 中心频率/MHz | 550 |
| 带宽/MHz | 300 |
| 信号形式 | 高斯脉冲 |
|
| 模拟域参数 | 域宽度/m | 600 |
| 域高度/m | 500 |
), ArticleFig(id=1281687967995507458, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=表7, caption=
仿真参数列表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 参数值 |
|---|
| 探测器参数 | 飞行高度/m | 150 |
|
| 雷达参数 | 中心频率/MHz | 550 |
| 带宽/MHz | 300 |
| 信号形式 | 高斯脉冲 |
|
| 模拟域参数 | 域宽度/m | 600 |
| 域高度/m | 500 |
), ArticleFig(id=1281687968071004931, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=EN, label=Tab.8, caption=
Relationship between ice layer dielectric constant imaginary part and echo dynamic range during iteration
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| 冰层介电常数虚部$ {\varepsilon {''}} $ | 回波动态范围/dB |
|---|
| 1.0×10–3 | 26.071 |
| 9.0×10–4 | 25.233 |
| 8.0×10–4 | 24.338 |
| 7.0×10–4 | 23.443 |
| 6.0×10–4 | 22.549 |
| 5.0×10–4 | 21.654 |
), ArticleFig(id=1281687968163279620, tenantId=1146029695717560320, journalId=1281212996840067084, articleId=1281687939822367214, language=CN, label=表8, caption=
迭代中冰层介电常数虚部与回波动态范围的关系
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| 冰层介电常数虚部$ {\varepsilon {''}} $ | 回波动态范围/dB |
|---|
| 1.0×10–3 | 26.071 |
| 9.0×10–4 | 25.233 |
| 8.0×10–4 | 24.338 |
| 7.0×10–4 | 23.443 |
| 6.0×10–4 | 22.549 |
| 5.0×10–4 | 21.654 |
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