摘要
分析了L2C码的主要作用,比较了GPS现代化后L2载波信噪比的变化特点,阐述了伪距观测值的噪声水平。
L2C code are introduced,and the SNR of carrier phase on different satellites and the noise level of pseudoranges are compared.Calculation indicates that the SNR of L2 carrier phase resumed by L2C code is improved obviously.
出处
《测绘信息与工程》
2009年第5期15-17,共3页
Journal of Geomatics
关键词
GPS现代化
L2C码
信噪比
质量分析
GPS modernization
L2C code
signal-to-noise ratio
quality analysis
