GLONASS软件接收机设计、实现与性能验证  

Design, Implementation and Performance Verification of GLONASS Software Receiver

作　　者：吉宁 王雪[1,2,3] 卢晓春 郭瑶[1,2,3] JI Ning;WANG Xue;LU Xiao-chun;GUO Yao(National Time Service Center,Chinese Academy of Sciences,Xi'an Shanxi 710600,China;Key Laboratory of Precision Navigation,Positioning and Timing Technology,Chinese Academy of Sciences,Xi'an Shanxi710600,China;School of Electronic and Communication Engineering,University of Chinese Academy of Sciences,Beijing101408,China;School of Astronomy,University of Chinese Academy of Sciences,Beijing,101408,China)

机构地区：[1]中国科学院国家授时中心,陕西西安710600 [2]中国科学院精密导航定位与定时技术重点实验室,陕西西安710600 [3]中国科学院大学电子电气与通信工程学院,北京101408 [4]中国科学院大学天文与空间学院,北京101408

出　　处：《计算机仿真》2022年第9期21-27,共7页Computer Simulation

摘　　要：近年来GLONASS更新速度加快,并在全球布设地面站,服务性能大幅提升,2019年8月中俄兼容互操作协定的签署,使GLONASS再次被研究者关注。研究了GLONASS导航信号的捕获、跟踪、星历提取及定位解算方法,设计并开发了GLONASSL1OF信号软件接收机,实测数据定位结果水平精度±6米,高程精度±8米,50%可能性的水平圆误差为2.7272m。分析了GLONASS信号测距和定位性能,在载噪比≥47.60dB时,伪距拟合差≤5m,同URA下,HDOP在2.1736~3.4812范围变化时,水平定位偏差标准差波动7.4092m。经分析精度衰减因子(DOP)和用户测距误差(URE)是最终定位误差主要影响因素。In recent years, Russia has accelerated the updating speed of GLONASS and set up ground stations around the world, which has greatly improved the service performance. Especially after the signing of the compatibility and interoperability agreement between China and Russia in August 2019,the status and service performance of GLONASS have once again attracted the attention of researchers. In this paper, the methods of GLONASS signal acquisition, tracking, ephemeris extraction and location solution are studied, and the GLONASS L1 OF signal software receiver is designed and developed. The horizontal positioning accuracy of the measured data is ±6 m, the elevation accuracy is ±8 m, and the circle error of 50% probability in the horizontal direction is 2.7272 m. The ranging and positioning performance of GLONASS navigation signals are analyzed. Under the same situation of URA,when HDOP varies in the range of 2.1736~3.4812,the fluctuation of the standard deviation of horizontal positioning deviation is 7.4092 m. After analysis, Dilution of Precision(DOP) and user ranging error(URE) are the main factors affecting the final positioning error.

关 键 词：格洛纳斯 软件接收机 精度衰减因子 用户测距误差 测距性能 定位性能 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]