基于球谐函数建模的单站接收机硬件延迟算法  

Single station DCB modeling algorithm based on spherical harmonics

作　　者：岳鑫鑫[1] 宋迎春[1,2] 崔先强[1,2] 刘青[1] 

机构地区：[1]中南大学地球科学与信息物理学院,湖南长沙410083 [2]地理信息工程国家重点实验室,陕西西安710054

出　　处：《测绘工程》2016年第5期16-19,共4页Engineering of Surveying and Mapping

基　　金：地理信息工程国家重点实验室开放基金(SKLGIE2013-M-2-5;SKLGIE 2013-M-2-4);中国博士后科学基金资助(2013M540641)

摘　　要：在电离层建模过程中,要想获取准确的电离层TEC信息,必须剔除硬件延迟的影响。利用4阶球谐函数建立单站电离层延迟模型,求解球谐函数系数的过程中解算硬件延迟值。在建模过程中针对单站模型卫星与接收机硬件延迟较难分离的问题,直接将广播星历中播发的TGD参数作为卫星硬件延迟,观测值采用载波相位平滑伪距,通过实验验证该方法的有效性。In order to obtain the accurate ionosphere TEC intormatlon m the ionosphere moaelmg process, the effects of hardware delay must be removed. In this paper, a single station ionospheric delay model based on 4-order Spherical harmonics has been set up. The spherical harmonics coefficients and the hardware delay have been calculated at the same time. To separate satellite and receiver hardware delay in the process of modeling for single station, the TGD parameters in broadcast ephemeris are directly used to obtain satellite hardware delay, and the observation values by using phase smoothing pseudorange. The effectiveness of the algorithm is verified through experiments.

关 键 词：电离层 硬件延迟(DCB) 球谐函数 载波相位平滑伪距 

分 类 号：P228[天文地球—大地测量学与测量工程]