综合单频C/A码、GPS接收机测量值的次优滤波算法

Suboptimal Filtering for Single Frequency C/A Code GPS Measurements

用卡尔曼滤波算法综合来自单频GPS接收机的伪距、相位和伪距率的测量值,在数分钟内不仅可以得到标准偏差约5cm的伪距估值,还可以得到同样精度的电离层延迟量,同时亦可以改正相位观测(综合多卜勒)中的初始偏差值.

Combining pseudorange, delta range and phaseemeasurements from single frequency GPS re- ceiver with a KALMAN filtering, we could get not only the pseudorange whose accuracy is about 5 cm(rms) ,but also the ionosphere delay which has the same level for accuracy as the pseudor- ange has and the correct bias value for the ambiquity of phase measurements in a few minutes.