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基于IGS的L2C信号跟踪站数据验证了具有L2C码的卫星的L2载波的信噪比高于没有L2C码的卫星的L2载波的信噪比,L2载波恢复的数据质量更好。针对不同的接收机,对比分析了C/A码和L2C码多路径效应及观测噪声水平,发现对TRIMBLE NETRS接收机,L2C码误差水平明显高于C/A码,与期望结果相反。 更多还原

【Abstract】 Based on the IGS tracking station data,the signal-to-noise ratio(SNR) of L2 carrier phase resumed by L2C code was improved obviously,almost close to the SNR of L1 carrier.For different receivers,this paper followed with a study on the multipath and noise levels of C/A and L2C code pseudorange,pointing out for TRIMBLE NETRS receiver,multipath and noise levels of L2C code was significantly higher than C/A code,contrary to expectations. 更多还原