• Corpus ID: 18543537

PLL Performance for Signals in the Presence of Thermal noise, Phase noise, and Ionospheric Scintillation

  title={PLL Performance for Signals in the Presence of Thermal noise, Phase noise, and Ionospheric Scintillation},
  author={W. Yu and G{\'e}rard Lachapelle and Susan Skone},
Performance of several carrier tracking loops are evaluated by the wideband data that mimic the real ionospheric scintillation. To accommodate the deficiency of the receiver’s oscillator, six-state dynamic model driven by Gaussian-distributed random samples is used to simulate the phase noise inherited by the imperfect crystal unit. Ionospheric scintillation is associated with the deep power fades and drastic phase variation. The scintillation model proposed by MITRE is employed in this paper… 

Multi-frequency GNSS robust carrier tracking for ionospheric scintillation mitigation

A new multivariate autoregressive model (MAR) for the multi-frequency ionospheric scintillation process is proposed, allowing independent tracking of both line-of-sight phase variations and complex gain scintillation components.

SS Carrier Tracking and Ionospheric Scintillation Mitigation

Ionospheric scintillation is the name given to the disturbance caused by electron density irregularities along the propagation path of electromagnetic waves through the iono­ sphere. These

Advanced KF-based methods for GNSS carrier tracking and ionospheric scintillation mitigation

Ionospheric scintillation is the name given to the disturbance caused by electron density irregularities along the propagation path of electromagnetic waves through the ionosphere. These non-nominal

Trade-off Analysis of Robust Carrier Phase Tracking Techniques in Challenging Environments

Three different families of techniques are explored for robust carrier phase tracking: advanced closed loop and open loop scalar techniques, and vector tracking techniques, which were assessed under harsh environments, including fading, ionospheric scintillations and high dynamics.

Implementation of Advanced Carrier Tracking Algorithm Using Adaptive-Extended Kalman Filter for GNSS Receivers

The proposed adaptive-extended Kalman filter (AEKF) approach works as an effective carrier tracking algorithm maintaining a balance in dual problems faced by PLL-based receivers, i.e., (estimation versus mitigation) and (dynamics versus noise reduction) tradeoff.

On the Mitigation of Ionospheric Scintillation in Advanced GNSS Receivers

The goal of this paper is to bring together the most relevant contributions on GNSS receiver design under scintillation conditions, and then, to propose a new GNSS carrier tracking framework and scintilation mitigation methodology.

Are PLLs dead? A tutorial on kalman filter-based techniques for digital carrier synchronization

The purpose of this article is to present and justify the reasoning behind the systematic use of KF-based tracking approaches instead of the well-established PLL-based architectures from both theoretical and practical points of view.

Model analysis on the performance for an inertial aided FLL-assisted-PLL carrier-tracking loop in the presence of ionospheric scintillation

There is a 10 dB improvement in the minimum 0 / N C by using a FLL as a backup tracking loop when compared to the receiver with PLL used as the primary tracking loop only, however, satisfying the requirements of the WER limits the performance of this technique.

Adaptive GNSS Carrier Tracking Under Ionospheric Scintillation: Estimation vs. Mitigation

A key point is to model the time-varying correlated scintillation phase as an AR(p) process, which can be embedded into the filter formulation, avoiding possible loss of lock due to scints, and Simulation results are provided to show the enhanced robustness and improved accuracy with respect to state-of-the-art techniques.

Performance Evaluation of Kalman Filter Based Tracking for the New GPS L5 Signal

The performances of several GPS L5 tracking implementations are evaluated using IF samples obtained with a hardware simulator. The aim of this study is to determine the loop structure and parameters



PLL Tracking Performance in the Presence of Oscillator Phase Noise

The tracking performance of a Phase Lock Loop (PLL) is affected by the influence of several error sources. In addition to thermal noise and dynamic stress error, oscillator phase noise can cause

Scintillation modeling for GPS‐Wide Area Augmentation System receivers

It appears that the worst case scintillation encountered at midlatitudes, including the United States, does not significantly impact L1 carrier‐tracking performance and Semicodeless tracking of the L2 carrier is shown to be very fragile.

Modeling the effects of ionospheric scintillation on GPS/Satellite‐Based Augmentation System availability

Ionospheric scintillation is a rapid change in the phase and/or amplitude of a radio signal as it passes through small‐scale plasma density irregularities in the ionosphere. These scintillations not

Carrier Tracking Loop Performance in the Presence of Strong CW Interference

This paper compares the contributions of Bruno and Bianchard, and extends Bruno's closed form approximation for the loop phase error to the entire lock region.

A Preliminary Study of the Effect of Ionospheric Scintillation on WAAS User Availability in Equatorial Regions

While Wide Area Augmentation System (WAAS) user performance is expected meet aviation requirements under most conditions, infrequent ionospheric anomalies may result in significant degradation at

A Kalman filter clock algorithm for use in the presence of flicker frequency modulation noise

The National Physical Laboratory (NPL) has developed a Kalman filter based algorithm for combining measurements from its three active hydrogen masers. The algorithm is designed to produce a near

A survey of digital phase-locked loops

A systematic survey of the theoretical/experimental work accomplished in the area of digital phase-locked loops (DPLL's) during the period of 1960 to 1980, thereby offering speedy access to the techniques and hardware developments which have been presented in a scattered literature.

Smoother-Based GPS Signal Tracking in a Software Receiver

A bit-grabber/software-receiver has been developed for the GPS L1 coarse/acquisition signal and these techniques make optimal use of after-the-fact data.

Time and Frequency (Time-Domain) Characterization, Estimation, and Prediction of Precision Clocks and Oscillators

  • D. Allan
  • Engineering
    IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  • 1987
A tutorial review of some time-domain methods of characterizing the performance of precision clocks and oscillators is presented. Characterizing both the systematic and random deviations is

Controlled-root formulation for digital phase-locked loops

In a new formulation for digital phase-locked loops, loop-filter constants are determined from loop roots that can each be selectively placed in the s-plane on the basis of a new set of parameters,