GNSS掩星探测软件设计与实现  

Design and realization of GNSS occultation observation software

作　　者：李星星[1] 严颂华[1] 袁汉成 王浩[1] Li Xingxing;Yan Songhua;Yuan Hancheng;Wang Hao(School of Electronic Information,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学电子信息学院,武汉430072

出　　处：《计算机应用研究》2018年第3期807-810,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(41571420)

摘　　要：GNSS掩星探测具有全天候观测、高垂直分辨率和全球覆盖等优势。大气环境的复杂性要求掩星接收机既要实时快速,也要参数自适应。基于软件接收机和掩星理论,设计了一种应用于掩星探测的软件接收机,以C/C++为编程语言,实现了掩星信号捕获、跟踪、开环处理、提取载波相位、特征多普勒二维重现等算法。软件接收机可以灵活改变开环跟踪算法的参数,可重配性和可扩展性强,可兼容GPS和北斗系统;软件充分考虑了掩星数据的失锁处理和结果的可视化。实测数据验证了软件的有效性。GNSS occultation observation technique has advantages of all-weather observation,high vertical resolution and global coverage.Considering the complexity of atmosphere climate,the occultation signal receiver requires not only high efficiency,but also adaptive parameters.Based on software receiver and occultation theory,this paper designed a software receiver for occultation observation.Programmed by C/C++language,it realized the functions included signal acquisition,tracking,open-loop processing,retrieving carrier phase and planar Doppler.The software could alter parameters flexibly and had high reconfiguration and strong expansibility.It’s compatible with both GPS and BeiDou system.The software took full consideration of the losing-lock process and visualization of results.The measured data has verified the effectiveness of the software.

关 键 词：掩星探测 开环跟踪 接收机 自适应 软件设计 

分 类 号：TP311.56[自动化与计算机技术—计算机软件与理论]