CHENG Lan, CHEN Jie, XIE Gang. Model and Simulation of Multipath Error in DLL for GPS Receiver[J]. Chinese Journal of Electronics, 2014, 23(3): 508-515.
Citation: CHENG Lan, CHEN Jie, XIE Gang. Model and Simulation of Multipath Error in DLL for GPS Receiver[J]. Chinese Journal of Electronics, 2014, 23(3): 508-515.

Model and Simulation of Multipath Error in DLL for GPS Receiver

Funds:  This work is supported by the Natural Science Foundation of Shanxi Prorince (No.2011011012-2) and the Youth Foundation of Taiyuan University of Technology (No.1205-04020102).
  • Received Date: 2013-01-01
  • Rev Recd Date: 2013-12-01
  • Publish Date: 2014-07-05
  • Although different multipath error models of Delay lock loop (DLL) used in GPS receiver are established, they have never been put together for comparison. Furthermore, no universal simulation method is developed to get a fair comparison among these models. A new model with implicate expression is hence proposed for the coherent DLL and the noncoherent Dot-product (DOT) power mode DLL. Meanwhile, a new simulation method based on the anonymous function in Matlab, which is especially suitable for models with implicit expression, is also proposed to compare the new model with the existing ones. The theoretical analysis and simulation results show that the existing models are the special case of the proposed one. The new simulation method can be used for the comparison of different multipath error models and the multipath error analysis of other DLLs for which only the implicit model is available.
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