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| 一种多前缘多阈值的波形重构算法 | |
| 引用本文： | 常晓涛,李建成,郭金运,黄金维.一种多前缘多阈值的波形重构算法[J].地球物理学报,2006,49(6):1629-1634. |
| 作者姓名： | 常晓涛 李建成 郭金运 黄金维 |
| 作者单位： | 1. 中国测绘科学研究院,北京,100039;中国科学院动力大地测量学实验室,武汉,430077 2. 武汉大学测绘学院,武汉,430079 3. 台湾国立交通大学土木工程系,台湾,新竹,30050 |
| 基金项目： | 国家自然科学基金，中国科学院科研基金 |
| 摘 要： | 为了改善近海测高精度,本文对近海测高波形的特征进行了研究,并在现有算法的基础上提出基于波前缘识别算法的多前缘多阈值波形重构方法.然后将该方法用于中国近海的卫星测高波形数据的处理,得到精度与分辨率更好的海面高数据.作为验证,将此海面高数据换算为重力异常并与船测重力进行比较,结果显示该方法可以明显提高卫星测高精度. |
| 关 键 词： | 中国近海 卫星测高 波形重构 跟踪口 海面高 |
| 文章编号： | 0001-5733（2006）06-1629-06 |
| 收稿时间： | 2006-04-12 |
| 修稿时间： | 2006-04-122006-08-16 |
A multi-leading edge and multi-threshold waveform retracker |
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| CHANG Xiao-Tao,LI Jian-Cheng,GUO Jin-Yun,Hwang Cheinway.A multi-leading edge and multi-threshold waveform retracker[J].Chinese Journal of Geophysics,2006,49(6):1629-1634. | |
| Authors: | CHANG Xiao-Tao LI Jian-Cheng GUO Jin-Yun Hwang Cheinway |
| Institution: | 1 Chinese Academy of Surverying and Mapping, Beijing 100039, China; 2.Key Laboratory of Dynamic Geodesy, Chinese Academy of Science, Wuhan 430077, China ;3. School of Geomatics, Wuhan University, Wuhan 430079, China ; 4.Department of Civil Engineering, National Chaotong University, Shinchu 30050, China |
| Abstract: | Characteristics of the altimetry waveform are studied to improve the accuracy of sea surface height measurement. Based on the existing methods, the leading-edge-detection-based multi-leading edge and multithreshold waveform retracking method is presented. Then, the method is applied to the waveform processing over the China offshore to enhance the precision and resolution of altimetry. As a validation, the gravity anomaly data are computed from the retracked data and compared with the ship-born gravity. Results show the method can improve the altimetry precision greatly. |
| Keywords: | China offshore Satellite altimetry Waveform retracking Tracking gate Sea surface height |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |