北斗观测数据质量检测方法及其软件实现

摘要

为检测北斗导航系统接收机的观测数据质量，对数据质量检测软件BNC的质量检测模块进行了改进。改进后的BNC软件能够识别北斗系统，正确读取观测文件以及广播星历，并在双频基础上增加了北斗的B3频点，能给出各颗星的多路径值，能正确画出包含GEO卫星在内的卫星高度角示意图、PDOP 值示意图、卫星可见性示意图，以及三频的多路径、信噪比的天空视图。%For checking the quality of the Beidou navigation satellites system data observed with the receivers, the quality-check model of BNC, a software for checking the quality of the observations, has been improved. The improved BNC can recognize the Beidou system and read the observation file and broadcast ephemeris correctly. Besides, the frequency B3 is added to the original dual-frequency in this program, and the multipaths for various satellites can be listed in the output file, furthermore the multipath-analysis sky plots and the signal-to-noise sky plots for three-frequencies, as well as the satellites elevation plots, the PDOP plots and the satellite availability plots for the satellites, including GEO satellites, are given in this program.