超紧密组合下GPS/INS跟踪回路的结构及性能分析

介绍了全球定位系统（GPS）和惯性导航（INS）的互补性，以及组合导航在制导系统设计中的广泛应用．GPS／INS组合导航系统使用的是松散组合或紧密组合，提出了一种超紧密组合的方案，并对其性能进行了仿真评估．结果表明，它可以提高GPS的性能，如更高的相位跟踪带宽和更高的抗多路径噪声的特性．

Architectures and Performance Analysis of GPS/INS Tracking Loops Based on Ultra-tight Integration

GPS and INS can complement each other,which are applied to the design of integrated GPS/inertial navigation and guidance systems.Most hybrid GPS/INS have been mechanized by combining the information from GPS and an inertial navigation system using either loose integration or tight integration.This level of coupling is referred to as ultra-tight integration,and simulation results show that it offers potential improvements to GPS performance,such as higher phase-tracking bandwidth and multipath noise.