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GNSS Augmentations and Other Navigation Satellite Systems
Published in Basudeb Bhatta, Global Navigation Satellite Systems, 2021
The ISRO has deployed a project to implement Indian Regional Navigational Satellite System (IRNSS) over the Indian region. The operational name of this system is NavIC (Navigation with Indian Constellation). It covers the entire Indian subcontinent as its primary service area and extends service to some of its neighbouring countries. The extended service area lies between primary service area and the area enclosed by the rectangle from Latitude 30°S to 50°N and Longitude 30°E to 130°E (Figure 7.3). The entire IRNSS system (space segment, control segment, and user segment) has been built in India and is being controlled by ISRO. As of year 2019, the system consists of eight satellites in orbit; namely IRNSS-1A (02 July 2013), 1B (04 April 2014), 1C (16 October 2014), 1D (28 March 2015), 1E (20 January 2016), 1F (10 March 2016), 1G (28 April 2016), and 1I (12 April 2018). IRNSS-1H was unsuccessful—could not reach orbit. The space segment of IRNSS is designed to have seven satellites at an altitude of 35,786 km. Three of these satellites are in geostationary orbit (located at 34° E, 83° E, and 131.5° E) while the remaining are in geosynchronous orbits that maintain an inclination of 29° to the equatorial plane. Such an arrangement ensures all satellites have continuous radio visibility with Indian control stations. There are plans to expand the NavIC system by increasing the number of satellites to 11 for increased positional accuracy. The satellite payloads consist of atomic clocks and electronic equipment for generating navigation signals.
Alternative sources of navigation and traffic flow data
Published in Lawrence A. Klein, ITS Sensors and Architectures for Traffic Management and Connected Vehicles, 2017
The Indian Regional Navigation Satellite System (IRNSS) was developed by the Indian Space Research Organization (ISRO). It provides accurate position information to users in India and to a primary region extending up to 1500 km from its boundary. An extended service area lies between the primary service area and an area enclosed by the rectangle from latitude 30° south to 50° north and longitude 30° east to 130° east. IRNSS offers a standard position service to the public and a restricted service to authorized users such as the military. The system consists of a constellation of seven satellites, three located in suitable geostationary orbital slots and four in geosynchronous orbits, with inclination and equatorial crossings in two different planes. In April 2016, with the last launch of the constellation's satellite, IRNSS was renamed the Navigation Indian Constellation (NAVIC).
Electronic navigation and vessel reporting systems
Published in G.D. Lees, W.G. Williamson, Handbook for Marine Radio Communication, 2015
IRNSS is the Indian Regional Navigation Satellite System currently under development by the Indian Space Research Organization (ISRO). It operates under the name of NavIC, an acronym for navigation with Indian constellation and provides coverage of the Indian continent and extending approximately 1,500 kilometers beyond. There are plans to extend this area even further. Expected accuracy is better than ten metres over the Indian continent and reducing to around twenty metres beyond. A built-in messaging service enables transmission of weather warning messages to mariners
Design and Analysis of 2.4 GHz Low-Noise, High-Gain 0.18 μm CMOS Cascode Low-Noise Amplifier for IRNSS Applications
Published in IETE Journal of Research, 2022
D. Jahnavi, G. Kavya, Anjana Jyothi Banu
IRNSS is an autonomous, indigenously developed satellite navigation system which operates in two bands (L5 and S) with the center frequency of 1176.45 and 2492.08 MHz, respectively. This work mainly concentrates on designing narrow band LNA for IRNSS (NavIC) receiver at S band frequency. It operates between 2483.778 and 2500.27 MHz (16.5 MHz BW) with the center frequency of 2492.08 MHz. The performance parameters required for LNA in this band should work with gain value greater than 20 dB with low-noise figure. Because of the smaller available bandwidth the design has various constraints to achieve higher gain with better stability and linearity.