Performance Analysis of a Deep Integration with Controllable Tracking Loops in High Dynamic Environments

Rongbing Li, Fei Xie, Junyi Huang, Jianye Liu

Abstract:	In recent years, the idea of using an inertial navigation system (INS) to improve GNSS signal tracking called deep (or ultra-tightly-coupled) GNSS/INS integration has been proposed, which provides improved GNSS signal-tracking performance in high-dynamics and poor signal-to-noise environments. This paper investigates a deep integration scheme with controllable tracking loops in high dynamic environments. The effect of high dynamics on the software receiver tracking loop is analyzed. To obtain the replica signals´ phase and frequency offset, the feedback mechanism of controllable tracking loop is described, including the control and performance of both code tracking loop and carrier tracking loop. Ultra-tight integration approach is built upon the INS models and GPS receiver tracking loop structure. Meanwhile, a mathematical IF GPS signal model is developed to describe the intrinsic relationships between replica signals’ parameters and the receiver dynamics. a simulation platform is set up for the performance analysis of methods and simulation results show that the method can achieve reliable positioning and robust tracking performance.
Published in:	Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012) September 17 - 21, 2012 Nashville Convention Center, Nashville, Tennessee Nashville, TN
Pages:	1651 - 1657
Cite this article:	Li, Rongbing, Xie, Fei, Huang, Junyi, Liu, Jianye, "Performance Analysis of a Deep Integration with Controllable Tracking Loops in High Dynamic Environments," Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 1651-1657.
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