GNSS海面反射信号的三维建模方法

doi:10.13700/j.bh.1001-5965.2017.0023

北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (1): 125-131.doi: 10.13700/j.bh.1001-5965.2017.0023

GNSS海面反射信号的三维建模方法

祁永强, 张波, 杨东凯, 张彦仲, 张健敏

北京航空航天大学电子信息工程学院, 北京 100083

收稿日期:2017-01-16 修回日期:2017-02-15 出版日期:2018-01-20 发布日期:2017-09-18
通讯作者: 杨东凯 E-mail:yangdongkai@sina.com
作者简介:祁永强,男,博士研究生。主要研究方向:GNSS-R理论与应用;张波,男,博士,讲师,硕士生导师。主要研究方向:扩频通信、卫星导航及其应用等;杨东凯,男,博士,教授,博士生导师。主要研究方向:卫星导航信号处理及应用技术、无线数据传输等;张彦仲,男,院士,博士生导师。主要研究方向:近代航空电子系统;张健敏,女,硕士研究生。主要研究方向:室内定位方法。
基金资助:
国家自然科学基金（61171070）

Three-dimensional modeling method of GNSS sea surface reflection signal

QI Yongqiang, ZHANG Bo, YANG Dongkai, ZHANG Yanzhong, ZHANG Jianmin

School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

Received:2017-01-16 Revised:2017-02-15 Online:2018-01-20 Published:2017-09-18

摘要/Abstract

摘要： 全球导航卫星系统反射（GNSS-R）技术应用中需GNSS-R信号模拟器来测试反射信号接收机，以降低成本。为此，提出了一种基于双基雷达原理的全球导航卫星系统（GNSS）海面反射信号建模方法。首先，分析了GNSS-R双基雷达遥感原理，根据延迟和多普勒频率在海面的分布特点，选择海面的反射点，并计算相应反射单元的面积；然后，对散射系数进行了计算；最后，对多条反射信号的合路信号进行相关的仿真验证。验证结果表明：模拟的海面反射信号的相关功率曲线与ZV模型理论曲线的相关系数优于0.92，能够有效地用于GNSS海面反射信号的生成。

关键词: 全球导航卫星系统(GNSS), 海洋遥感, 反射信号, 双基雷达, ZV模型

Abstract: In the application of global navigation satellite system-reflection(GNSS-R) technology, the GNSS-R signal simulator is needed to test the reflection signal receiver in order to reduce costs. A modeling method of global navigation satellite system (GNSS) sea surface reflection signal based on the principle of bistatic radar is presented. First, the remote sensing principle of GNSS-R bistatic radar was analyzed. Then, according to the distribution characteristics of the delay and the Doppler frequency on the sea surface, the reflection points of the sea surface were selected, and the area of corresponding reflection units was calculated. Subsequently, the calculation of the scattering coefficient was carried out. Finally, the simulation verification of the multiple combined signals was conducted. The simulation results indicate that the correlation coefficient of the simulated ocean reflection signal's correlation power curve and the theoretical curve of the ZV model is better than 0.92, which can be used to generate the GNSS ocean reflection signal effectively.

Key words: global navigation satellite system (GNSS), ocean remote sensing, reflection signal, bistatic radar, ZV model

中图分类号:

TN967.1

祁永强, 张波, 杨东凯, 张彦仲, 张健敏. GNSS海面反射信号的三维建模方法[J]. 北京航空航天大学学报, 2018, 44(1): 125-131.

QI Yongqiang, ZHANG Bo, YANG Dongkai, ZHANG Yanzhong, ZHANG Jianmin. Three-dimensional modeling method of GNSS sea surface reflection signal[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2018, 44(1): 125-131.

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GNSS海面反射信号的三维建模方法

Three-dimensional modeling method of GNSS sea surface reflection signal

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