The pseudo-code phase can be only measured by the GPS receiver in the severely weak signal environment, so the full pseudo-range cannot be obtained.
当接收卫星信号极为微弱时,接收机仅能测量其伪码相位,而无法获取完整伪距。
参考来源 - 辅助型GPS定位系统关键技术研究The results show that using nonlinear process equation can further improve the performance, but using nonlinear pseudo-range equation has no significant improvement compared to the linearized pseudo-range equation.
结果表明：非线性系统方程可以进一步提高系统对方位角的估计性能：非线性伪距观测方程对组合系统的精度没有明显提高。
参考来源 - 非线性滤波方法在导航系统中的应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
The precision of pseudo-range measurement determines the precision of pseudo-range positioning.
伪距测量精度决定了伪距定位的精度。
The reference station needs to monitor and receive the high-accuracy navigation signal in the wide area DGPS, and to get more accuracy data of pseudo-range observation.
在GPS广域差分系统中，参考站需要进行高精度导航信号监测接收，并获得良好的伪距观测数据。
The simulation results indicate that the pseudo-range remaining errors will be increased with the distance between base-station and GPS user and in the case of low satellite elevation.
仿真结果表明用户和基准台之间距离增大和低卫星仰角都将使伪距残差增大，气象因素和高程对伪距残差也有影响。
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