CAJ | 학술논문

针对 GPS 与 INS 两路数据更新频率不一致的问题,提出一种基于矢量跟踪的 GPS/INS 深耦合跟踪环路设计方法.利用滤波外推与CIC滤波相结合的方法,将误差修正后惯导信息回馈到各矢量信号跟踪信道,以调控伪码和载波数控振荡器(controlled oscillator,NCO),实现了跟踪环路的闭合,最终建立起了两路相互独立数据之间相互辅助、相互修正的关系.仿真实验结果表明,设计的GPS/INS深耦合跟踪环路能实现低载噪比和高动态信号的跟踪.
침대 GPS 여 INS 량로수거경신빈솔불일치적문제,제출일충기우시량근종적 GPS/INS 심우합근종배로설계방법.이용려파외추여CIC려파상결합적방법,장오차수정후관도신식회궤도각시량신호근종신도,이조공위마화재파수공진탕기(controlled oscillator,NCO),실현료근종배로적폐합,최종건립기료량로상호독립수거지간상호보조、상호수정적관계.방진실험결과표명,설계적GPS/INS심우합근종배로능실현저재조비화고동태신호적근종.
Aiming at the problem of the GPS and INS date for two-way update frequency inconsistent, put forwards a design of tracking loop in GPS/INS deep integrated navigation based on vector tracking. The method of combining the filtering extrapolation with the CIC filter, error correction after the ins information feedback to track the channel vector signal, to control code and the carrier number controlled oscillator (NCO) and to realize the closed loop tracking, finally set up the relationship between the data of two independent of each other mutual assistance and mutual correction. The simulation experiment results show that the design of the GPS/INS deep coupling tracking loop can achieve low noise ratio and high dynamic signal.