摘要
为弥补测高数据在近海区域因为编辑准则被剔除而导致近海测量数据质量不高的缺点,利用5参数模型的两种形式和Ice-2模型对Jason-2卫星在中国南海部分海域的海洋回波波形进行了波形重跟踪的研究,并选择20个海洋回波波形,依据最小二乘原理进行计算、分析、对比,发现5参数模型的指数形式的结果和Ice-2模型结果非常接近。研究结果表明,在开阔的海域,对Jason-2波形进行3种方法波形重跟踪时,可以优先考虑Ice-2模型。波形重跟踪技术能够提高卫星测高数据利用率,为科学研究提供可靠的数据保障。
To make up for the drawback that the altimetry data is eliminated in the offshore area owing to editing principle,which may lead to the low quality of offshore survey data.The paper studies sea echo waveform of Jason-2 satellite based on two forms of five parameter model and Ice-2 model, and selects 20 sea echo waveforms in the South China Sea to calculate according to the least squares principle.Then analyze and compare the results.The results show that five parameter model index is close to Ice-2 model.lt can be concluded that the Ice-2 model has priority when using three methods of Jason-2 waveform tracking in the open sea.In addition, waveform tracking technology can improve the utilization of satellite altimetry data to provide reliable data for scientific research.
出处
《海洋测绘》
CSCD
2017年第6期5-8,16,共5页
Hydrographic Surveying and Charting
基金
国家自然科学基金(41274029
41674082
41504018
41774018
41404020)
国家重点研发计划项目(2016YFB 0501702)
关键词
卫星测高
波形重跟踪
最小二乘法
5参数模型
Ice-2模型
satellite altimetry
altimetry waveform retracking
least square
five parameter model
Ice-2 model
