结合GPS测姿技术的空中修正方案研究

文中提出一种结合ＧＰＳ载波相位测姿技术对弹上惯导进行空中修正的方案。在导弹飞行过程中,利用ＧＰＳ载波相位测姿技术确定导弹方位,结合位置信息对弹载平台的姿态误差进行修正,使之达到精度要求。文中论述了利用双天线ＧＰＳ接收机的载波相位信号测定载体方位的原理,采用某型国产ＧＰＳ接收机进行了静态实验,验证了使用该型接收机的技术可行性;讨论了利用位置及方位信息估计与修正平台姿态误差的三种方案,给出仿真结果及结论。

INS Rectification in Flight Combined with GPS Attitude Determination Technique

This paper introduced a scheme of rectifying Inertial Navigation System on a missile by combining with the technique of the attitude determination of GPS carrier phase.In the process of missile flight,the azimuth is identified by the attitude measurement technique of GPS carrier phase,then combined with position information of the missile to rectify the attitude error of the missile board platform.The paper discusses the principle of determining azimuth by GPS receiver with two antennas fixed on the missile,implements an experiment using a GPS receiver made in China,and verifies the technical feasibility of using this type of receiver.Three schemes for estimating and rectifying the platform attitude errors by using position and azimuth information are also discussed, the simulation results and conclusion are shown.