Estimation of ionospheric delay of NavIC/IRNSS signals using the Taylor Series Expansion
Mehul V. Desai,Shweta Shah +1 more
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TLDR
In this article, a Taylor Series Expansion (TSE) algorithm for a single-frequency NavIC/IRNSS system is proposed to estimate the ionospheric time delay (ionodelay) precisely using the local Taylor series expansion (TSE) algorithm, and the performance of the local TSE algorithm is examined by considering two cases.Citations
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Journal ArticleDOI
A study of ionospheric effects on IRNSS/NavIC positioning at equatorial latitudes
TL;DR: In this paper, the role of ionospheric determinants, such as TEC and scintillation S4, on the accuracy of augmented navigation over low latitude region using a dual-frequency NAVigation with Indian Constellation (NavIC) receiver installed at BITS-Pilani K.K. Birla Goa Campus (Geog. Lat. 15.39 ° N, Geog. Long.
Journal ArticleDOI
Case Study: Performance Observation of NavIC Ionodelay and Positioning Accuracy
Mehul V. Desai,Shweta Shah +1 more
TL;DR: After correcting the ionosphere, troposphere, clock, and other deviations, the average ∼70% NavIC positioning accuracy is improved for the overall observed duration, conditions, and locations.
Proceedings ArticleDOI
An assessment of ionospheric delay correction at L5 and S1 frequencies for NavIC Satellite System
TL;DR: In this article, an analysis of the first-order ionospheric corrections at S1 and L5 frequencies have been done based on data collected over June 2017 from NavIC satellites.
Case study: NavIC Performance Observation on Low Latitude Region
TL;DR: In this paper, the effect of artificial or natural error sources on satellite signals depends on their location, traveling path and traveling path, and the performance analysis of NavlC signals has been evaluated in terms of Power Spectral Density, acquisition and post-processing parameters like C / No, elevation angle, pseudoranges, ionospheric delay and troposphere delay concerning the location of NavIC receiver at low latitude SVNIT, Surat Station.
Journal ArticleDOI
A local Multivariate Polynomial Regression approach for ionospheric delay estimation of single-frequency NavIC receiver
Mehul V. Desai,Shweta Shah +1 more
TL;DR: In this article, the authors implemented the local multivariate polynomial regression (MPR) approach to measure the ionospheric delay more accurately for single-frequency Navigation with Indian Constellation (NavIC) system within a local area ( 5) days.
References
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Book
Global Positioning System: Signals, Measurements, and Performance
TL;DR: This advanced tutorial will describe the GPS signals, the various measurements made by the GPS receivers, and estimate the achievable accuracies, and focus on topics which are more unique to radio navigation or GPS.
Journal ArticleDOI
Ionospheric Time-Delay Algorithm for Single-Frequency GPS Users
TL;DR: The algorithm designed for this purpose, and implemented in the GPS satellites, requires only eight coefficients sent as part of the satellite message, and contains numerous approximations designed to reduce user computational requirements, yet preserves the essential elements required to obtaingroup delay values along multiple satellite viewing directions.
Journal ArticleDOI
Ionospheric Storms — A Review
TL;DR: In this paper, the authors reviewed the current understanding and recent advances in the study of ionospheric storms with emphasis on the F2-region, and proposed a global first principle physical model to simulate the storm response of the coupled neutral and ionized upper atmospheric constituents.
Journal ArticleDOI
Tropospheric Effect on Electromagnetically Measured Range: Prediction from Surface Weather Data
TL;DR: In this paper, it was shown that at any point in a dry atmosphere, the atmospheric refractivity depends on both pressure and temperature (the ratio P/T), not of temperature.
Journal ArticleDOI
Comparative testing of four ionospheric models driven with GPS measurements
J. Feltens,Matthew Angling,Natasha Jackson-Booth,Norbert Jakowski,Mohammed Mainul Hoque,Manuel Hernández-Pajares,Angela Aragon-Angel,R. Orús,R. Zandbergen +8 more
TL;DR: In this paper, four ionospheric models based on GNSS data (the Electron Density Assimilative Model, EDAM; the Ionosphere Monitoring Facility, IONMON v2; the Tomographic Ionosphere model, TOMION; and the Neustrelitz TEC Models, NTCM) have been run using a controlled set of input data.
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