Journal ArticleDOI
Augmentation of GNSS Utility by IRNSS/ NavIC Constellation Over the Indian Region
Atanu Santra,Somnath Mahato,S. K. Mandal,Sukabya Dan,Pratibha Verma,P. K. Banerjee,Anindya Bose +6 more
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TLDR
The studies show that, in such situations of inferior GNSS satellite visibility, IRNSS/NavIC operating together with GPS, can augment this time-dependent degraded visibility conditions.Citations
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GNSS Vulnerabilities and Existing Solutions: A Review of the Literature
Jasmine Zidan,Elijah I. Adegoke,Erik Kampert,Stewart A. Birrell,Col R. Ford,Matthew D. Higgins +5 more
TL;DR: In regards to GNSS threats, jamming and spoofing attacks as well as detection techniques adopted in the literature are surveyed and summarized and multipath propagation in GNSS and non line of sight (NLoS) detection techniques are discussed.
Journal ArticleDOI
Precision of satellite based navigation position solution: A review using NavIC data
TL;DR: An attempt has been made to briefly review efforts to calculate precision parameters of GNSS based position solution in geodetic coordinate using MATLAB and use the developed utility as a case study to observe the effectiveness of such parameters.
Journal ArticleDOI
Visibility Anomaly of GNSS Satellite and Support from Regional Systems
TL;DR: Real-time data from India show the regular absence of usable GPS satellites above 60° elevation angles during some parts of the day; addition of GLONASS and Galileo satellites does not improve the situation much, and regional navigation satellite systems (RNSS) help mitigate this problem within the respective service regions.
Journal ArticleDOI
Potential of Multi constellation Global Navigation Satellite System in Indian Missile Test Range Applications
TL;DR: Because of the availability of a large number of navigation signals over the Indian region, multi-constellation GNSS receivers can enhance signal availability, reliability, and accuracies during the calibration of missile test ranges.
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NavIC performance over the service region: availability and solution quality
TL;DR: A detailed analysis of NavIC visibility under open sky and constrained condition over the service region using an in-house developed simulation tool, the effects ofNavIC satellite geometry on single-point solution accuracy and NavIC single and dual frequency solution performances are presented.
References
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Journal ArticleDOI
The Usefulness of GLONASS for Positioning in the Presence of GPS in the Indian Subcontinent
TL;DR: In this paper, GPS and GLONASS signals were monitored for one calendar year simultaneously in different places in India to study the status of visibility of satellites and the positioning accuracy, and it was shown that the combined use of GPS and GPS will always be beneficial to a varying degree depending on different applications and circumstances.
Journal ArticleDOI
Studies on solution accuracy of GLONASS from India
Shreya Sarkar,Anindya Bose +1 more
TL;DR: The accuracy capabilities of revitalized GLONASS in standalone and in mixed mode of operation with GPS on basis of studies made using real-life data from different parts of India collected over 2012–2014 are discussed.
A study on GPS PDOP and its impact on position error
TL;DR: Study on the variations of 3-dimensional position errors on PDOP reveals that position errors increase proportionately up to the value of· 6, and possibly beyond this value of PDOP, the position errors are governed by some other factors.
Journal Article
Mathematical Modelling of Antenna Look Angle of Geostationary Communications Satellite Using Two Models of Control Stations
TL;DR: The mathematical models developed are abstract models that use mathematical equations to describe the antenna look angles of two models of satellite ground control station and takes into consideration the redundancy of the control stations.