摘要
基于VS2010平台实现了一套完整的北斗双频软件接收机算法,包括了信号的捕获、跟踪、电文解调以及伪距单点定位解算,并针对北斗信号的NH码提出了新的捕获方法。对北斗B1/B2双频信号处理的实验结果表明,该程序可以成功的捕获和跟踪北斗双频卫星信号,并利用组合后的双频码伪距观测值进行单点定位,消除了卫星钟差、电离层延迟误差等误差因素。最后,利用实验实例,分析比较了单双频定位结果,验证了此软件接收机的可行性和稳定性。
In this paper,a double-frequency BDS software receiver algorithm is implemented based on VS2010 platform,including signal acquisition,tracking,message demodulation and pseudorange point positioning.An improved acquisition method is also proposed in response to the NH code.The experimental results show that the program can successfully capture and track the BDS double-frequency satellite signals,and use the combined double-frequency code pseud-orange observations to complete single-point positioning,eliminating the satellite clock error,ionospheric delay error and other error factors.Finally,the experimental analysis shows the positioning result of the single and double-frequency;it proves the feasibility and stability of the software receiver.At the same time,the implementation of the C + + platform provides a more convenient conditions for the doublefrequency tracking algorithm research.
作者
章红平
李梦杨
郭文飞
ZHANG Hongping;LI Mengyang;GUO Wenfei(GNSS Research Center,Wuhan University,Wuhan 430079,China)
出处
《测绘地理信息》
2019年第1期18-21,共4页
Journal of Geomatics
基金
国家重点研发计划(2016YFB0501802)
中国博士后科学基金(2016M600613)
关键词
软件接收机
BDS双频
NH码
伪距单点定位
software receiver
BDS
double-frequency
NH code
pseud-orange single-point positioning
