Debipriya Dutta

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• Doctor of Philosophy
• Assistant Professor at Dr. B.C. Roy Engineering College

Galileo and NavIC, respectively, are two operational global and regional satellite-based navigation systems maintained by civilian authorities. Hybrid operation of a global and a regional system offers advantages for the user community within the service area of the regional system. In view of the signal structure similarity of Galileo and NavIC, h...

Global Navigation Satellite System (GNSS) sensors are increasingly considered as major sources of precise Position, Navigation, and Timing (PNT) information. Android-based smartphones contain inbuilt GNSS sensors, and they now contribute to a major global GNSS market segment. Various hardware and Android-based applications (App) developments are wi...

In a multi-GNSS environment, users are exploiting the benefts of hybrid multi-constellation GNSS operation for redundancy and enhanced solution quality. The Indian geolocation helps in signal availability from all global and regional systems, but no study on the usabil- ity and advantages of the Japanese Quasi-Zenith Satellite System (QZSS) is made...

Global Navigation Satellite System (GNSS) is widely used for myriads of applications. Along with GPS, GLONASS and Galileo providing global coverage, BeiDou is the fourth global navigation satellite system developed, deployed and controlled by China, initiated operation science 2020. BeiDou performance from India is limitedly reported and this manus...

Global Navigation Satellite System (GNSS) provides precise position, navigation and timing solutions. GNSS/Global Position System (GPS), initially developed for military purpose, helps in myriads of civilian applications including surveying, cartography and geospatial uses. Geodetic GNSS receivers used for such purposes have the limitations of high...

Android base smartphones are used for multipurpose applications along with the normal voice or data communications using various types of integrated sensors including navigation or GNSS (Global Navigation Satellite System) sensor. The GNSS sensors use signals from navigation satellites to provide location information. Initially, the costly GNSS har...

Commercial Global Navigation Satellite System (GNSS) receivers provide the measure of received satellite signal strength in terms of Signal to Noise ratio (SNR) or Carrier to Noise ratio (C/N0), through in many cases the terms are used interchangeably. The received signal strength affects the receiver performance, as this is one of the measures of...

Modern smartphones are used for various purposes other than core telephony services. They are equipped with GNSS sensors and therefore are used as personal navigation devices. Presence of capable GNSS hardware enables them to be used for collection of GNSS data for geomatic application or basic GNSS research. With evolving Android versions, more ca...

BeiDou is the first 20 th century global satellite system developed by China. BeiDou is an upcoming contributor to the globally available multi-GNSS environment along with fully deployed GPS, GLONASS and Galileo. No effort reporting on the availability and performance on BeiDou from India is available and this paper presents a brief description of...

Indian Regional Satellite Navigation System (IRNSS), developed by the Indian Space Research Organization (ISRO) is designed to provide PVT services in and around India. Since end of April, 2016, all the planned 07 satellites (03 GEOs and 04 IGSOs) are in orbit transmitting signals in L and S-band those can be used for PVT solutions. Fully operation...

Indian Regional Satellite Navigation System (IRNSS) is developed by the Indian Space Research Organization (ISRO) to provide positioning service for a primary service area consisting of Indian landmass plus surrounding areas up to 1500 km and for secondary area lying within the rectangle from Latitude 300 S to 500 N, Longitude 300 E to 1300 E. Curr...

The Indian Regional Navigation Satellite System (IRNSS) is an autonomous and independent regional navigational system under development by Indian Space Research Organization (ISRO). IRNSS will provide position, velocity and timing services for India and surrounding regions. All the planned 07 satellites of IRNSS constellation are now in space and w...

Satellite Based Augmentation System (SBAS) is a technique for enhancing the capability of satellite based navigation systems (satnav) by providing correction parameters over a large geographical area. The users utilizes the correction factors received from one or more geostationary satellites to improve the solution accuracy obtained from a satnav...

This paper presents the potentials of using revitalized GLONASS from India as an active alternative to GPS and as a component for Multi-GNSS. Presented results on GLONASS accuracy, visibility, satellite geometry and signal strengths are obtained using data collected over long periods of time from different parts of India.

Use of satellite based navigation (SATNAV) is now popular with myriads of applications. Currently, GPS and GLONASS are fully operational and new systems from different countries are being developed fast – therefore a generic term, Global Navigation System (GNSS) has evolved which is also referred to as multi-GNSS, emphasising the scope of use of mo...

Over the past fifty years navigation and positioning technology have made a quantum leap with various types of developed applications. Along with Global Positioning System (GPS), GLObal Navigation Satellite System (GLONASS) again became fully operational since early 2012 after some inactivity period till 2001. The European system-GALILEO is now fou...

G alileo is Europe's contribution to the multi-GNSS to provide a highly accurate, guaranteed global positioning service under civilian control. Offering dual frequencies as standard, Galileo is expected to deliver extremely good real-time positioning accuracy. From users' point of view, availability of Galileo's signal would help in achieving a mul...