基于改进剥层法的南极冰盖密度反演算法

杨望笑; 窦银科; 稂时楠; 赵博; 王煜尘; 左广宇

doi:10.11999/JEIT210410

基于改进剥层法的南极冰盖密度反演算法

doi: 10.11999/JEIT210410

1.
太原理工大学电气与动力工程学院太原 030024
2.
北京工业大学信息与通信工程学院北京 100124
3.
中国科学院空天信息创新研究院北京 100190

基金项目: 国家自然科学基金(41776199)

详细信息

作者简介:
杨望笑：男，1994年生，博士生，研究方向为雷达信号处理与应用

窦银科：男，1973年生，博士，教授，研究方向为新型传感与智能仪器技术

稂时楠：女，1988年生，博士，副教授，研究方向为智能信号处理与应用

赵博：男，1986年生，博士，副研究员，研究方向为数据采集与处理、雷达系统与技术

王煜尘：男，1995年生，博士生，研究方向为机器学习与机器人的路径规划算法

左广宇：男，1990年生，博士，研究方向为冰盖力学分析

通讯作者:
窦银科　douyk8888cn@126.com

中图分类号: TN959.3
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- 被引次数: 0
出版历程
- 收稿日期: 2021-05-12
- 修回日期: 2021-09-03
- 网络出版日期: 2021-09-17
- 刊出日期: 2022-04-18

Antarctic Ice Sheet Density Inversion Algorithm Based on Improved Layer Stripping Method

1.
College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2.
Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
3.
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China

Funds: The National Natural Science Foundation of China (41776199)

摘要

摘要: 南极冰盖的密度-深度数据是建立高精度表面物质平衡模型时的关键参数。该文提出一种基于调频连续波(FMCW)雷达的冰盖密度和介电常数反演算法。该算法首先利用剥层反演法初步反演密度剖面，然后利用反演的密度和冰盖密实化经验公式建立密度剖面模型，最后通过优化算法寻找最优密度模型参数，从而达到校准密度的目的。基于理论冰盖模型和实测雷达数据的实验结果验证了算法的有效性。
- 调频连续波雷达 /
- 介电常数反演 /
- 剥层反演法 /
- 优化算法
Abstract: The density-depth relationship of the Antarctic ice sheet is one of the key parameter when building the high-precision surface mass balance model. An ice sheet density and permittivity inversion method is proposed based on Frequency Modulated Continuous Wave (FMCW) radar. The density profile is preliminarily inverted firstly by the layer stripping inversion method. Then the density model is established by the shallow inversion density and the ice sheet densification empirical equation. Finally, the optimal model parameters are found through the optimization algorithm to calibration the density. Experimental results based on theoretical ice sheet models and measured radar data verify the effectiveness of the new method.
- Frequency Modulated Continuous Wave (FMCW) radar /
- Medium parameter inversion /
- Layer stripping inversion method /
- Optimization algorithm

HTML全文

图 1 FMCW雷达工作示意图

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图 2 冰芯B31密度和相对介电常数

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图 3 冰芯B31的介电常数标准差和密度变化率归一化

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图 4 冰盖密度反演和校准流程图

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图 5 冰芯B31的密度反演结果

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图 6 冰芯LGB69附近的密度反演结果

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参考文献(17)

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