Improving Tracking Performance of PLL in High Dynamic Applications

  title={Improving Tracking Performance of PLL in High Dynamic Applications},
  author={Ping Lian},
  • Ping Lian
  • Published 26 January 2005
  • Computer Science
The Phase-locked loop (PLL) is used in GPS receivers to track an incoming signal and to provide accurate carrier phase measurements. However, the PLL tracking performance and measurement accuracy are affected by a number of factors, such as signal-to-noise power ratio, Doppler frequency shift, the GPS receiver's jitter caused by vibration, and the Allan deviation. Among these factors, the thermal noise and Doppler shift are the most predominant and have a large influence on the design of the… 

Development of a Robust Carrier Synchronizer for High Dynamic and Low Signal to Noise Ratio Signals in GPS Receivers

A robust carrier recovery loop for high dynamic and weak signals in GPS receivers is proposed which can obviate the need of large digital filters or complex circuits such as wavelet de-noising filters in the loop.

Adaptive Gain Control Method of a Phase-Locked Loop for GNSS Carrier Signal Tracking

A novel PLL with an adaptive loop gain control filter (AGCF-PLL) that can provide an alternative to the popular and practical approach for tracking the GNSS carrier signal which propagates in the form of electromagnetic wave.

Carrier Tracking Loop using the Adaptive Two-Stage Kalman Filter for High Dynamic Situations

In high dynamic situations, the GPS carrier tracking loop requires a wide bandwidth to track a carrier signal because the Doppler frequency changes more rapidly with time. However, a wide bandwidth

An Adaptive INS-Aided PLL Tracking Method for GNSS Receivers in Harsh Environments

An adaptive INS-aided PLL capable of adjusting its noise bandwidth and coherent integration time has been proposed and demonstrated that the adaptive tracking method can effectively improve the PLL tracking ability and integrated GNSS/INS navigation performance.

Improving Tracking Performance of PLL Based on Wavelet Packet De-noising Technology

The wavelet packet de-noising technique effectively eliminates the effect of the noise and allows broadening the PLL bandwidth and the results show that this method outperforms the ordinary method in terms of Signal-to-Noise Ratios (SNR) and Relative Mean-Square Error (RMSE).

The adaptive combined receiver tracking filter design for high dynamic situations

Although the carrier Doppler and the code Doppler are generated by the same relative movement between the satellite and the user, often, the each tracking loop are designed separately and

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.

Design of robust carrier tracking systems in high dynamic and high noise conditions, with emphasis on neuro-fuzzy controller

The proposed intelligent type-2 neuro-fuzzy controllers in tracking system provide results that are more acceptable than others because of overcoming the uncertainties in the received carrier signal and environmental conditions.

Tracking improvement for vehicular applications due to use of a Vector Delay Lock Loop

A Kalman Filter is introduced in the GPS-L1 signal tracking loop to improve its robustness in adverse environments by comparing them to the performances of a traditional tracking loop.

The study of the impact of high dynamic environment on the GPS carrier tracking

This paper analyzes the dynamics of the GPS signal, and discusses the various parameters of the PLL dynamic performance, and the limitations of the traditional carrier tracking loop, to contribute to design a new high dynamic carrier loop.



Extended Kalman Filter Methods for Tracking Weak GPS Signals

A combined phase-locked loop/delay- Locked loop has been developed for tracking weak GPS C/A signals and can acquire and maintain lock on a signal as weak as 15 dB Hz if the receiver clock is an ovenized crystal oscillator and if the line-of-sight acceleration variations are as mild as those seen by a geostationary user vehicle.

Real-time minimization of the total tracking error in phase and delay lock loops - a second approach of the Fast Adaptive Bandwidth algorithm

A new real-time method is presented that is able to automatically and dynamically set the loop filter parameters of PLL and DLL in order to minimize the total error of phase measurements by taking into account of Line Of Sight (LOS) dynamics and of the level of noise on the received signal.

Improvement of pseudorange measurements accuracy by using fast adaptive bandwidth lock loops

The Fast Adaptive Bandwidth Lock Loop (FAB-LL) results in a real-time optimal use of the loops because it minimizes the power of the pseudorange measurement thermal noise with respect to the imposed error due to dynamics.

Results of the implementation of the fast adaptive bandwidth lock loops on a real GPS receiver in a high dynamics context

This paper will present in this paper any results of the implementation of the FAB algorithm on the carrier tracking loops of a real Gec-Plessey GPS receiver and an analysis of the results on the improvement of carrier phase measurement accuracy.

Kalman-Filter-Based Semi-Codeless Tracking of Weak Dual-Frequency GPS Signals

The algorithm estimates the P(Y) carrier amplitudes, accounts for signal dynamics in the optimization process, and optimally couples its code and carrier tracking loops, and has been successfully tested with real data under normal signal strength conditions.

Bit Synchronization and Doppler Frequency Removal at Very Low Carrier to Noise Ratio Using a Combination of the Viterbi Algorithm with an Extended Kalman Filter

Simulation results indicate the ability of the Viterbi Algorithm to produce high bit edge detection rate (EDR), and optimal Bit Error rate (BER), even at very low power signals (15 dB-Hz).

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.

Real-time dual frequency software receiver

  • S. Ganguly
  • Computer Science
    PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556)
  • 2004
The flexible, re-configurable, software based, real time receiver will allow test and measurement of a variety of receiver architectures and in conjunction with the data recorder will allow both real-time and off-line test of new signals and performance of receivers under difficult conditions.

Attitude Sensing Using a Global-Positioning-System Antenna on a Turntable

A new attitude sensor is proposed that consists of a single global positioning system (GPS) antenna mounted on a turntable with its phase center offset from the turntable's spin axis. It is being

Phase-locked loops : design, simulation, and applications

This chapter discusses the design procedure for Mixed-Signal PLLs, and the PLL in Communications, and discusses the Pull-in Process and the Laplace Transform.