摘要
为了提高北斗定位系统定位定姿的精度及性能,利用惯性导航系统(inertial navigation system,INS)姿态信息进行辅助,建立BDS/INS组合定位算法。通过INS输出信息与BDS观测信息紧组合的方式,以北斗导航卫星系统的伪距以及伪距率作为子系统状态量,利用卡尔曼滤波方法将卫导观测信息与惯导导航参数融合在一起进行计算。通过实际仿真实验表明,相比于原系统算法,组合后的算法能有效地提高BDS定位的精度和成功率。
In order to improve the precision of positioning of informant and beidou positioning system performance,based on inertial navigation system（INS）auxiliary posture information,BDS/INS integrated positioning algorithm is established.By INS output information and BDS observation information tight combination way,with beidou navigation satellite system pseudorange and pseudorange rate as a subsystem state,using the kalman filtering method to defend guide obsevation information together with inertial navigation parameters are calculated.The results through the practical simulation show that,compared with the original system algorithm,the combined algorithm can effectively improve the accuracy of BDS positioning and success rate.
出处
《舰船电子工程》
2015年第7期91-93,共3页
Ship Electronic Engineering
关键词
北斗定位系统
定位定姿
惯性导航系统
紧耦合
卡尔曼滤波
beidou positioning system
positioning on board
inertial navigation system
tight coupling
Klaman filter
