A code-minus-phase combination (CC) and multipath (MP) GPS and BeiDou range measurements analysis approach is demonstrated, and the qualitative results of single frequency GPS and BeiDou measurement signals are presented; the performances of CC ambiguity iesolution with single frequency data is discussed lastly. The results show that: measurement signals of geostationary Earth orbit (GEQ) satellite show a higher precision than Inclined geosynchronous satellite orbit (IGSQ) satellite;the multipath effects of two kinds of measurement signals exist in long-term and short-term trend. When a long period is utilized, such as 600 s, the success rate of CC ambiguity resolution can reach over 90% in GPS LI/L2 and BeiDou B1/B2 frequency, however, when short period is utilized, such as 120 s, owing to the stronger multipath effects, the success rate of BeiDou IGSO satellite is the lowest, no more than 50%.%基于单测站和短基线试验的伪距相位差值（code-minus-phasecombination，CC）和多路径（multipath，MP）两类组合观测值，对比分析了北斗和GPS测距信号质量，并检验了多路径误差对CC模糊度固定的影响。结果表明：北斗GEO卫星（geostationary Earth orbit）的测距信号质量优于IGSO卫星（inclined geosynchronous satellite orbit），且两类测距信号的多路径误差分别包含长、短期的变化趋势。针对CC模糊度固定，当采用较长时间段（如本文中的600s）时，GPSL1／L2和北斗B1／B2共4个频段上的成功率均超90％；而对于快速模糊度固定（如仅采用120s），由于受强多路径误差影响，北斗IGSO卫星的固定成功率最低，不超过50％。
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