窄巷FCB估计方法改进及时变特性分析
发布时间：2019-04-25 13:47
【摘要】：窄巷波长相对较短,受观测数据质量和未模型化误差的影响较大,导致参考站计算的窄巷FCB估值的互差较大,窄巷FCB稳定性较差。针对窄巷FCB估值出现较大偏差的参考站,本文提出了基于抗差初值的窄巷FCB抗差估计方法,该方法取当前历元所有参考站窄巷FCB估值的中位数作为抗差初值,采用IGGⅢ方案降低了有偏差的窄巷FCB估值的权比。采用IGS全球跟踪站网的数据进行验证,改进的方法提高了窄巷FCB的精度和稳定性,采用每天估计的一组卫星端的窄巷FCB即可满足窄巷模糊度固定的精度要求。同时,采用本文改进方法估计的窄巷FCB,可以提高用户端仿动态单天解的窄巷模糊度固定成功率和定位精度。
[Abstract]:The narrow lane wavelength is relatively short, which is greatly influenced by the observation data quality and the unmodeled error, which results in the large mutual difference of the narrow lane FCB estimation calculated by the reference station, and the poor stability of the narrow lane FCB. For the reference station with large deviation in narrow lane FCB estimation, this paper presents a narrow lane FCB robust estimation method based on the initial robust initial value, which takes the median of narrow lane FCB estimation of all reference stations in current epoch as the initial robust initial value. The IGG 鈪，
本文编号：2465166
[Abstract]:The narrow lane wavelength is relatively short, which is greatly influenced by the observation data quality and the unmodeled error, which results in the large mutual difference of the narrow lane FCB estimation calculated by the reference station, and the poor stability of the narrow lane FCB. For the reference station with large deviation in narrow lane FCB estimation, this paper presents a narrow lane FCB robust estimation method based on the initial robust initial value, which takes the median of narrow lane FCB estimation of all reference stations in current epoch as the initial robust initial value. The IGG 鈪，
本文编号：2465166
本文链接：https://www.wllwen.com/kejilunwen/dizhicehuilunwen/2465166.html
