哈尔滨工程大学学报2025，Vol.46Issue(2)：283-291,9.DOI:10.11990/jheu.202305031
北斗双频精密单点定位模糊度固定及性能分析
Beidou dual-frequency precise point positioning ambiguity fixation and performance analysis
摘要
Abstract
The full operation of the Beidou global navigation satellite system can beneficially enhance the perform-ance of Beidou's precise point positioning ambiguity resolution(PPP-AR).The BeiDou B1I/B3I dual-frequency ionospheric-free combination PPP-AR model is deduced to evaluate the global regional BeiDou PPP-AR perform-ance.The quality control strategy selected by the wide lane and narrow lane partial ambiguity subset is designed to ensure the reliability of ambiguity resolution.The performance of 60-day static data of 36 stations worldwide is eval-uated.The results indicate that in terms of time to first fix(TTFF),solution-fixed convergence time,and fixed success rate,BDS-2/3 in the Asia-Pacific region performs the best,followed by Asia-Pacific BDS-3,whereas non-Asia-Pacific BDS-3 performs the worst.Although the average fixed success rate of BDS-2/3 in the Asia-Pacific re-gion is the highest,the elevation angle priority fixing method does not account for the influence of ambiguity-fixed success rates on PPP-AR verification.As a result,the ambiguity resolution success rate during certain observation times and at some stations.In terms of positioning accuracy,BeiDou achieves centimeter-level precision for every fixed solution.For example,with Asia-Pacific BDS-2/3 in static mode,the RMS positioning errors are 0.7,0.6,and 1.9 cm in the north,east,and up directions,respectively.关键词
北斗全球导航卫星系统/精密单点定位模糊度固定/双频无电离层组合/宽巷/窄巷/部分模糊度子集选取/质量控制/高度角优先固定方法分类
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赵琳,孙治国,杨福鑫,张洁,谭波,李亮..北斗双频精密单点定位模糊度固定及性能分析[J].哈尔滨工程大学学报,2025,46(2):283-291,9.基金项目
国家重点研发计划(2021YFB3901300) （2021YFB3901300）
国家自然科学基金项目(62003109,61773132,61633008,61803115,62003108) （62003109,61773132,61633008,61803115,62003108）
黑龙江省优秀青年研究科学基金项目(YQ2020F009). （YQ2020F009）
