Derivation of an Analytical Model for Estimation of Measurement Error Induced by an Arbitrary Disturbance on a Coherent Delay Lock Loop

摘要

This paper proposes an analytical model to estimate the measurement error in a coherent early-late DLL when the input code is corrupted by a disturbance with arbitrary spectrum features. The approach is to analyse (by Fourier techniques) the interactions between the disturbance and the local early and late codes in order to find out how the measurement is affected. After the theoretical derivation, the model is validated by comparison with experimental results obtained by adding RF Interference on a real receiver.