Mean Time to Lose Lock for a Coherent Second-Order PN-Code Tracking Loop—The Singular Perturbation Approach

Arnold L. Welti; Ben Zion Bobrovsky

doi:10.1109/49.56387

Mean Time to Lose Lock for a Coherent Second-Order PN-Code Tracking Loop—The Singular Perturbation Approach

Arnold L. Welti, Ben Zion Bobrovsky

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The singular perturbation method is used to approximate the mean time to lose lock (MTLL) for a second-order coherent pseudonoise code tracking delay-lock loop (DLL). Approximate expressions for the MTLL are given. The influence of loop “offset” due to Doppler rate is studied, and optimal loop parameters (namely, natural frequency and damping factor) which maximize the MTLL are presented. Upper bounds to the maximum allowable Doppler rates for various operating conditions are given.

Original language	English
Pages (from-to)	809-818
Number of pages	10
Journal	IEEE Journal on Selected Areas in Communications
Volume	8
Issue number	5
DOIs	https://doi.org/10.1109/49.56387
State	Published - Jun 1990

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Mean Time to Lose Lock for a Coherent Second-Order PN-Code Tracking Loop—The Singular Perturbation Approach

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