摘要
基于GAMIT10.71研究高阶电离层(high-order ionosphere, HOI)延迟对于北斗卫星导航系统(BDS) B2I、B2a和B3I三种频段信号对对流层参数估计的影响。实验结果表明,太阳活动低水平时期,HOI延迟对B2I天顶总延迟(zenith total delay, ZTD)、南北梯度(NSgrad)和东西梯度(EWgrad)的影响最大分别达到0.80 mm、0.60 mm和0.99 mm,对B2a的ZTD、NSgrad和EWgrad的影响最大分别达到3.60 mm、10.77 mm和10.74 mm,对B3I的ZTD、NSgrad和EWgrad的影响最大分别达到1.60 mm、3.28 mm和5.90 mm;太阳活动高水平时期,HOI对对流层参数估计产生了更大影响。实验结果进一步表明,HOI对对流层参数估计的影响呈现出白天高于夜晚、低纬度地区高于高纬度地区的特征。
Based on GAMIT10.71,we study the influence of high-order ionosphere(HOI)delay on the estimation of tropospheric parameters of B2I,B2a and B3I frequency signals of Beidou navigation satellite system(BDS).The experimental results show that during low levels of solar activity,the maximum influence of HOI delay on the zenith total delay(ZTD),north south gradient(NS grad)and east west gradient(EW grad)of B2I is 0.80 mm,0.60 mm and 0.99 mm respectively.The maximum influence of ZTD,NS grad and EW grad of B2a is 3.60 mm,10.77 mm and 10.74 mm respectively.The maximum impact of ZTD,NS grad and EW grad of B3I is 1.60 mm,3.28 mm and 5.90 mm respectively.During the period of high solar activity,HOI has a greater impact on the estimation of tropospheric parameters.The experimental results further show that the influence of HOI on tropospheric parameter estimation is higher in the daytime than at night,and the influence of HOI in low latitude is higher than that in high latitude.
作者
方卓
魏僮
房海若
张兵良
FANG Zhuo;WEI Tong;FANG Hairuo;ZHANG Bingliang(Nanjing Shuwei Survey Co Ltd,367 Brick Wall Economic Park,Nanjing 211808,China;School of Transportation and Geomatics Engineering,Shenyang Jianzhu University,25 Mid-Hunnan Road,Shenyang 110168,China;School of Materials Science and Engineering,North University of China,3 Xueyuan Road,Taiyuan 030051,China;College of Public Administration,Nanjing Agricultural University,1 Weigang,Nanjing 210095,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2023年第9期893-898,共6页
Journal of Geodesy and Geodynamics
关键词
高阶电离层(HOI)延迟
频段信号
太阳活动低水平
太阳活动高水平
对流层参数估计
high-order ionosphere(HOI)delay
frequency band signal
low level of solar activity
high level of solar activity
tropospheric parameter estimation
