北斗三频数据模糊度解算方法比较分析

A comparison Analysis of Ambiguity Resolution with BeiDou Triple-frequency Data

分析三频模糊度解算方法,利用实测北斗不同长度基线,对比LAMBDA方法、经典TCAR(CIR)方法以及GB-TCAR方法在模糊度解算成功率、解算精度、解算时间上的效果,分析了几种方法的优缺点及主要的限制因素。结果表明,虽然LAMBDA方法在解算时间上稍逊于其他方法,但是其定位精度及适用范围很好,GB-TCAR在解算短基线模糊度时略优于CIR方法,当基线长度大于20km时,二者的优势均慢慢衰减。

To analyze the performance of triple-frequency ambiguity resolution methods,the LAMBDA method,the classical TCAR（CIR）method and the GB-TCAR method were compared with difference length of BeiDou surveying data in ambiguity resolution success rate,precision and calculating time,and pointed out their main advantages and disadvantages.The results indicated that the LAMBDA method performs better than others even if its long calculating time,GB-TCAR performs better than CIR in short baselines,when the baseline longer than 20 km,this superiority suffers from attenuation.