Journal ArticleDOI
Extended theory of early-late code tracking for a bandlimited gps receiver
TLDR
This paper provides a more exact analysis of code-tracking accuracy for early-late discriminators processing conventional binary phase shift keyed signals in white noise using linear models based on a small-error assumption.Abstract:
Code-tracking accuracy, an important attribute of GPS receivers, depends both on characteristics of the signal being tracked and on the design of the receiver. A simple expression has been available to predict code-tracking accuracy for early-late processing of signals with sinc-squared spectra in white noise for an infinite
front-end bandwidth receiver. However, the literature has not indicated when this approximation holds. This paper provides a more exact analysis of code-tracking accuracy for early-late discriminators processing conven-tional binary phase shift keyed signals in white noise. New analytical expressions apply for various front-end
bandwidths, discriminator spacings, and code-tracking loop bandwidths, while using linear models based on a small-error assumption. A theoretical lower bound is also supplied, indicating inherent limits on accuracy for given conditions. While evaluation of the exact expressions requires numerical integrations, new algebraic
approximations are also provided. Numerical results compare the various expressions and approximations.read more
Citations
More filters
Book
Principles of GNSS, Inertial, and Multisensor Integrated Navigation Systems, Second Edition
TL;DR: The second edition of the Artech House book Principles of GNSS, Inertial, and Multisensor Integrated Navigation Systems as discussed by the authors offers a current and comprehensive understanding of satellite navigation, inertial navigation, terrestrial radio navigation, dead reckoning, and environmental feature matching.
Journal ArticleDOI
Binary Offset Carrier Modulations for Radionavigation
TL;DR: A class of particularly attractive modulations called binary offset carrier (BOC) is described, important characteristics of modulations for radionavigation are presented, several specific BOC designs are introduced, and receiver processing for these modulations are described.
Journal ArticleDOI
Generalized Theory of Code Tracking with an Early-Late Discriminator Part I: Lower Bound and Coherent Processing
John W. Betz,K.R. Kolodziejski +1 more
TL;DR: Analytical expressions for performance of code- tracking loops using early-late discriminators, under small-error conditions are provided, showing that code-tracking accuracy depends on more than merely signal-to-noise ratio and early-Late spacing - the shape of signal and interference spectra are important, as is the receiver precorrelation bandwidth.
Journal ArticleDOI
Challenges in Indoor Global Navigation Satellite Systems: Unveiling its core features in signal processing
TL;DR: The science and technology for positioning and navigation has experienced a dramatic evolution and the observation of celestial bodies for navigation purposes has been replaced today by the use of electromagnetic waveforms emitted from reference sources.
Journal ArticleDOI
LTE receiver design and multipath analysis for navigation in urban environments
Kimia Shamaei,Zaher M. Kassas +1 more
TL;DR: A computationally-efficient receiver, which uses a phase-locked loop (PLL)-aided delay- Locked loop (DLL) to track the received LTE signals is presented, demonstrating robust multipath mitigation for high transmission LTE bandwidths.
References
More filters
Journal Article
Global Positioning System : Theory and Applications I
TL;DR: Differential GPS and Integrity Monitoring differential GPS Pseudolites Wide Area Differential GPS Wide Area Augmentation System Receiver Autonomous Integrity Monitoring Integrated Navigation Systems Integration of GPS and Loran-C GPS and Inertial Integration Receiver Aut autonomous Integrity Monitoring Availability for GPS Augmented with Barometric Altimeter Aiding and Clock Coasting
Book
Global positioning system : theory and applications
TL;DR: Differential GPS and Integrity Monitoring Differential GPS Pseudolites Wide Area differential GPS Wide Area Augmentation System Receiver Autonomous Integrity Monitoring Integrated Navigation Systems Integration of GPS and Loran-C GPS and Inertial Integration Receiver Autonomic Integrity Monitoring Availability for GPS Augmented with Barometric Altimeter Aiding and Clock Coasting GPS and Global Navigation Satellite System (GLONASS) GPS Navigation Applications Land Vehicle Navigation and Tracking Marine Applications Applications of the GPS to Air Traffic Control GPS Applications in General Aviation Aircraft Automatic Approach and Landing of Aircraft Using Integrity Beacons Spacecraft Attitude
Journal ArticleDOI
Theory and Performance of Narrow Correlator Spacing in a GPS Receiver
TL;DR: This paper presents the derivation of these narrow correlator spacing improvements, verified by simulated and tested performance.
The Offset Carrier Modulation for GPS Modernization
TL;DR: The offset carrier modulations and their characteristics are described, showing that they provide many advantages for Modernization.
Journal ArticleDOI
Controlled-root formulation for digital phase-locked loops
S.A. Stephens,J.B. Thomas +1 more
TL;DR: In this paper, a new formulation for digital phase-locked loops is proposed, where 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, each with single and direct physical meaning in terms of loop noise band, width root-specific decay rate, or rootspecific damping.