摘要
                
                    北斗卫星导航系统播发3个频点的导航信号,有利于载波相位模糊度解算。鉴于传统的三频模糊度解算方法由于受基线距离的限制难以在中长基线情形下可靠地固定模糊度,本文提出一种适用于北斗卫星系统中长基线模糊度固定的新方法。实验结果表明,改进的新算法不受基线长度的约束,在保证超宽巷、宽巷模糊度正确固定的同时,宽巷模糊度估值误差在0.3周以内;窄巷模糊度估值误差在3周以内。相比于传统算法,新方法的改进效果较好。
                
                BeiDou navigation satellite system(BDS) transmits triple-frequency signals, which is benefit to carrier phase ambiguity resolution. Considering the limit of resolving the ambiguity reliability of the classical three-carrier ambiguity resolution(TCAR) method in long-baseline, a new method of ambiguity resolution of long-baseline for the BDS is proposed. The resuhs show that the improved method is independent of the limit of baseline length, in which the Extra-Wide-Lane(EWL) and Wide-Lane(WL) ambiguity can be resolved correctly, meanwhile, the estimated WL ambiguity is below 0.3 cycles in most cases, and the estimated Narrow-Lane(NL) ambiguity is below 3 cycles, and its performance is better than that of the classical algorithm.
    
    
    
    
                出处
                
                    《测绘科学技术学报》
                        
                                CSCD
                                北大核心
                        
                    
                        2017年第3期258-262,共5页
                    
                
                    Journal of Geomatics Science and Technology
     
            
                基金
                    国家自然科学基金项目(41604032)
                    地理信息工程国家重点实验室开放基金项目(SKLGIE2015-M-2-5)
            
    
                关键词
                    北斗卫星导航系统
                    三频模糊度解算
                    电离层延迟
                    无几何无电离层
                    长基线
                
                        BeiDou navigation satellite system
                         three carrier ambiguity resolution
                         ionospheric delay
                         geometry- free and ionosphere-free
                         long-baseline
                
     
    
    
                作者简介
杨东森(1991-),男,河南南阳人,硕士生,主要研究方向为多频模糊度快速解算。E—mail:yangdongsen2015@sina.com