GNSS伪卫星相对时延的测定与系统校正  

Relative Time Delay Measurement and System Correction of GNSS Pseudolites

作　　者：黎春辉 赵利[1,2] 陈竞 牛振华 LI Chun-hui;ZHAO Li;CHEN Jing;NIU Zhen-hua(Guilin University of Electronic Technology,Guilin 541004,China;Guangxi Key Laboratory of Precision Navigation Technology and Application,Guilin 541004,China)

机构地区：[1]桂林电子科技大学,桂林541004 [2]广西精密导航技术与应用重点实验室,桂林541004

出　　处：《价值工程》2023年第32期105-107,共3页Value Engineering

基　　金：广西精密导航技术与应用重点实验室,项目名称:伪卫星自主时间同步关键技术的研究(No.DH201903)。

摘　　要：针对伪卫星发射机固有的传输时延,结合伪卫星信号体制的特点,提出一种伪卫星发射机相对时延的测定方法,建立测量模型,测量伪卫星收发系统的总传输时延,以其中一个伪卫星为基准,使用差分方法得到与其它伪卫星间相对传输时延,并将测量值变换成定位算法的钟差校正因子进行定位解算,提高定位精度,达到系统校正的目的。Aiming at the inherent transmission delay of pseudolite transmitter and combining with the characteristics of pseudolite signal system,a method to measure the relative delay of pseudolite transmitter is proposed,and a measurement model is established to measure the total transmission delay of the pseudolite transceiver system.Based on one of the pseudolites,the relative transmission delay between it and other pseudolites is obtained using differential method.And the measured value is converted into the clock correction factor of the positioning algorithm to solve the positioning,improve the positioning accuracy and achieve the purpose of system correction.

关 键 词：伪卫星 相对时延 系统校正 

分 类 号：TN96[电子电信—信号与信息处理]