CAJ | 학술논문

北斗卫星导航系统已具有区域无源导航能力，为了研究当前可用星座情况下的系统定位精度，首先分析用户等效测距误差（UERE）结合精度因子（DOP）值的精度评估方法计算模型，然后利用上述方法采用实际数据对比分析了北斗卫星导航系统和GPS系统一段时间内的静态定位精度。通过分析得出，在该段时间内北斗系统定位精度在水平方向上误差优于5 m，在高程方向上误差优于15 m。
북두위성도항계통이구유구역무원도항능력，위료연구당전가용성좌정황하적계통정위정도，수선분석용호등효측거오차（UERE）결합정도인자（DOP）치적정도평고방법계산모형，연후이용상술방법채용실제수거대비분석료북두위성도항계통화GPS계통일단시간내적정태정위정도。통과분석득출，재해단시간내북두계통정위정도재수평방향상오차우우5 m，재고정방향상오차우우15 m。
Beidou satellite navigation system has possessed a regional passive navigation capability. In order to study the po-sitioning accuracy of Beidou system in the case of currently available constellations,the calculation model of the user equivalent range error(UERE)and accuracy assessment method combining dilution of precision(DOP)value is analyzed in this paper. By using the above method and the actual data,the static positioning accuracy in a period of time of Beidou system and GPS sys-tem is compared and analyzed. The analysis result indicates that,during this period,Beidou system positioning accuracy error is less than 5 m in the horizontal direction and 15 m in height direction.