北斗GPSGLONASSGALILEO多星座组合导航研究.pdfVIP

CSNC2010 第一届中国卫星导航学术年会 北京 北斗/GPS/GLONASS/GALILEO 多星座组合导航研究 曾庆化 刘建业 梁玉琴 胡倩倩 (南京航空航天大学导航研究中心，江苏，南京，210016) 摘 要：针对北斗、GPS、GLONASS 和 GALILEO 等单星座系统定位中存在的定位精度不足、可见星不多、定位可 靠性不强等问题，提出了利用北斗/GPS/GLONASS/GALILEO 多星座信息在统一坐标系中采用最小二乘法进行组合导 航定位方法。仿真结果表明，北斗系统的定位精度优于现有 GPS 导航精度，采用北斗/GPS/GLONASS/GALILEO 多星 座组合导航定位能够有效提高用户的定位精度和可靠性，研究成果对北斗系统的精度验证和多星座接收机的实现具有 重要参考意义。 关键词：卫星定位；北斗；多星座组合；时间统一；组合导航 Multi-constellation Integrated Navigation based on Beidou/GPS/GLONASS/GALILEO 1 1 1 ZENG Qing-hua , LIU Jian-ye , LIANG Yu-qin , Hu Qian-qian (Navigation Research Center, College of Automation, Nanjing University of Aeronautics Astronautics, Nanjing 210016, China) Abstract: Due to the low positioning accuracy, low reliability and less visible satellites in Beidou, GPS, GLONASS and GALILEO system respectively, the positioning algorithm of multi-constellation integrated navigation system of Beidou/GPS/GLONASS/GALILEO was presented. Different Coordinate systems and time systems of four satellite constellations were uniformed; the least square method was used in the positioning calculation. Simulation results indicate: BeiDou system is better than current GPS position system, the Beidou/GPS/GLONASS/GALILEO multi-constellation integrated navigation system can greatly improve the positioning precision and reliability with more visible satellites. The result has great reference value on realization of Beidou system and its multi-constellation receiver. Key words: BeiDou; Multi-constellation Integrated; Space-time Unification; Integrated Navigation 1 引言 目前世界上四大全球导航卫星系统(GNSS)：现有的美国 GPS 和俄罗斯 GLONASS，欧盟计划在 2013 年建成的 GALILE