摘要
为评估动态模式下BDS-3新信号B1C和B2a的接收机观测噪声,通过动态零基线实验测量BDS-3新频点的观测噪声,并与其他GNSS信号进行比较,同时将动态实验与静态实验进行对比分析。动态实验结果表明,BDS-3在B1C和B2a频点上MEO卫星的伪距噪声RMS值分别为8 cm和4 cm,载波相位噪声分别为0.061 cm和0.082 cm,IGSO卫星的观测噪声略有增加,四星座各频率的伪距噪声差异明显,但载波相位噪声相差不大。相比于静态实验,尽管动态观测数据质量下降,但整体上B1C和B2a频点的伪距噪声差异不大,而载波相位噪声的差异较为显著。
To evaluate the receiver measurement noise of the new signals B1C and B2a of BDS-3 in kinematic mode,we determine the measurement noises of the new signals by zero-baseline kinematic test and compare the results with other GNSS signals.Meanwhile,we compare the kinematic results with the static mode.In the kinematic test,the RMS values of pseudorange noises of MEO satellites on B1C and B2a frequencies of BDS-3 are 8 cm and 4 cm,respectively,and the carrier phases are 0.061 cm and 0.082 cm,respectively.The measurement noise of IGSO satellites increases slightly.The pseudorange noise of each frequency of the four constellations are obviously different,but the phase noises range is not large.Although there is a decline in kinematic observation data quality,the overall pseudorange noises on B1C and B2a frequencies are not significantly different compared to static noises.However,the difference of the carrier phase noises is more significant.
作者
徐震宇
蔡昌盛
崔先强
张家同
朱永兴
XU Zhenyu;CAI Changsheng;CUI Xianqiang;ZHANG Jiatong;ZHU Yongxing(School of Geosciences and Info-Physics,Central South University,932 South-Lushan Road,Changsha 410083,China;State Key Laboratory of Geo-Information Engineering,1 Mid-Yanta Road,Xi’an 710054,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2023年第4期364-368,386,共6页
Journal of Geodesy and Geodynamics
基金
国家重点研发计划(2020YFA0713501)
国家自然科学基金(42174040)
湖南省自然科学基金(2020JJ4111)
地理信息工程国家重点实验室基金(SKLGIE2021-Z-2-1)。
