Improving the Design of Frequency Lock Loops for GNSS Receivers

Curran James T.; Lachapelle Gerard; Murphy Colin C.

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Improving the Design of Frequency Lock Loops for GNSS Receivers

机译：改进GNSS接收机的锁频环设计

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An analysis of the design and performance of the discrete-update GNSS frequency lock loop (FLL) is presented. Expressions for the design and the steady-state performance of one first-order and two second-order FLL loop filters are developed. Transient performance of the FLL in the presence of thermal noise is examined and the relative performance of four carrier frequency discriminators is studied. It is shown that careful discriminator choice can yield a 10 dB performance improvement relative to "naive" designs.

机译：提出了对离散更新GNSS频率锁定环（FLL）的设计和性能的分析。开发了一个一阶和两个二阶FLL环路滤波器的设计和稳态性能表达式。研究了存在热噪声时FLL的瞬态性能，并研究了四个载波鉴频器的相对性能。结果表明，与“天真”设计相比，谨慎选择鉴别器可以使性能提高10 dB。

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《Aerospace and Electronic Systems, IEEE Transactions on》 |2012年第1期|p.850-868|共19页
作者
Curran James T.; Lachapelle Gerard; Murphy Colin C.;
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University College Cork;

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Improving the Design of Frequency Lock Loops for GNSS Receivers

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