由于载体对象的高动态特点，其上装载的GNSS 接收机在捕获信号和跟踪定位上面临很大的挑战，因此致使 GNSS/INS 组合系统的定位效果受到严重影响。本论文以 MEMS IMU/GNSS 超紧组合为研究目标，并以 MEMS IMU 环路辅助的GNSS/INS 紧组合技术为研究重点，深入研究了 MEMS IMU 辅助的 GNSS 信号捕获、MEMS IMU 辅助的 GNSS 信号跟踪、MEMS IMU 辅助的 GNSS/INS 紧组合导航定位算法和基于矢量跟踪结构的 GNSS/INS 超紧组合算法，旨在改善MEMS IMU/GNSS 组合导航系统在卫星信号衰减场合中的性能。

-High dynamic characteristics of the carrier object loaded on GNSS receivers face a lot of challenges in the capture of the signal and track positioning on GNSS/INS positioning effect of the combined system, therefore resulting in severely affected. This thesis, MEMS IMU/GNSS super tight combination of research objectives, and to the MEMS IMU loop auxiliary GNSS/INS tight combination of technology with a focus on in-depth study the MEMS IMU Assisted GNSS signal acquisition, MEMS IMU auxiliary of GNSS signal tracking , the MEMS IMU Assisted GNSS/INS tightly integrated navigation positioning algorithm based on the structure of vector tracking GNSS/INS the super tight combination algorithm, designed to improve the performance of MEMS IMU/GNSS integrated navigation system of the satellite signal attenuation occasions.