基于波形重定技术的杭州湾平均海面高模型建立  

Research of Waveform Retracking to Establish Hangzhou Bay Sea Surface Height Model

作　　者：李静[1] 岳建平[1] 彭刚跃 宋亚宏 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098

出　　处：《海洋测绘》2016年第1期39-42,共4页Hydrographic Surveying and Charting

摘　　要：利用AVISO提供的SARAL卫星杭州湾周年的WAVEFORM数据,通过对卫星波形分析,提出了一种新的波形重定方法,该方法在顾及波形物理机制基础上,根据各波形的特征进行重定。对重定前后的波形数据进行粗差剔除、共线平均,分析了重定后数据质量。通过交叉点平差,结合验潮站数据建立杭州湾平均海面高模型,所建模型与验潮站平均海面高差值的平均值为0.006m,标准差为0.038m。结果表明,利用本文提出的方法能显著提高卫星测高数据的精度与质量。By using waveform data from SARAL satellite, satellite waveform was analyzed, and a new waveform retracking method for offshore areas was discussed.Based on physical mechanism, the waveform was retracked according to its characteristic.The gross error of the retracked waveform data and the raw data was eliminated, both of the data were averaged, and the data quality was analyzed. By the crossover adjustment and the comparison of the altimeter data with the tidal gauge data, the average difference of the mean sea surface height between the model and the tidal gauge was 0.006m, and the standard deviation was 0.038m.The results showed that the method discussed in this paper could significantly improve the accuracy and quality of the altimetry data.

关 键 词：SARAL测高卫星 WAVEFORM数据 波形重定 效果分析 杭州湾 

分 类 号：P228.3[天文地球—大地测量学与测量工程]