基于GNSS信号模拟器的GNSS接收机室内校准方法研究  

Research on indoor calibration method of GNSS receiver based on GNSS signal simulator

作　　者：周志春 ZHOU Zhichun(Fujian Metrology Institute,Fuzhou 350003,China)

机构地区：[1]福建省计量科学研究院,福建福州350003

出　　处：《工业计量》2024年第4期11-15,共5页Industrial Metrology

基　　金：福建省市场监督管理局科技计划项目(FJMS2021010)。

摘　　要：JJF 1118—2004《全球定位系统(GPS)接收机(测地型和导航型)校准规范》中规定,GNSS静态和动态接收机的校准通过GNSS基线场进行。但该方法需要现场采集同步卫星观测数据,采集数据花费大量的人力物力,成本高,劳动强度大,效率低。为解决此问题,实现GNSS接收机的实验室内校准,本章提出一种基于GNSS信号模拟器的GNSS接收机校准方法。用GNSS信号模拟器和接收机在基线场观测墩上录制同步卫星观测数据,然后在实验室内将数据回放给被校接收机,用数据处理软件进行基线解算,解算结果与基线参考值比较,得到基线测量误差。试验过程同步采集5个观测站点数据,其中3个站点用GNSS信号模拟器进行采集录制。试验结果表明基于基于GNSS信号模拟器的GNSS接收机校准方法可行。According to JJF 1118-2004 Calibration Specification for Global Positioning System(GPS)Receivers,the calibration of GNSS static and dynamic receivers is carried out through GNSS baseline field.However,this method requires on-site collection of synchronous satellite observation data,which costs a lot of manpower and material resources,has high cost,high labor intensity and low efficiency.In order to solve this problem and realize laboratory calibration of GNSS receiver,a GNSS receiver calibration method based on GNSS signal simulator is proposed in this paper.The GNSS signal simulator and receiver were used to record the observation data of the synchronous satellite on the baseline field,and then the data was played back to the calibrated receiver in the laboratory.The baseline calculation was carried out with the data processing software,and the calculation results were compared with the reference value to obtain the baseline measurement error.Data from 5 observation stations were collected synchronously during the test,and 3 stations were recorded by GNSS signal simulator.The experimental results show that the calibration method of GNSS receiver based on GNSS signal simulator is feasible.

关 键 词：GNSS信号模拟器 GNSS接收机 功分器 基线场 辐射天线 

分 类 号：P228.4[天文地球—大地测量学与测量工程]