Augmentation of Indian Regional Navigation Satellite System to Improve Dilution of Precision

The Indian Regional Navigation Satellite System (IRNSS) is an autonomous and independent navigational system being developed by India. IRNSS will provide position, navigation and timing services for national applications. To improve accuracy, it can be augmented using GPS and pseudolites (pseudo-sat...

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Bibliographic Details
Published in:Journal of navigation 2010-04, Vol.63 (2), p.313-321
Main Authors: Sarma, Achanta D, Sultana, Quddusa, Srinivas, Vemuri Satya
Format: Article
Language:English
Subjects:
Air transportation and traffic
Applied sciences
DOP
Exact sciences and technology
Global positioning systems
GPS
Ground, air and sea transportation, marine construction
IRNSS
Navigation systems
Precision
Pseudolites
Radiolocalization and radionavigation
Regions
Satellite systems
Telecommunications
Telecommunications and information theory
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Summary:The Indian Regional Navigation Satellite System (IRNSS) is an autonomous and independent navigational system being developed by India. IRNSS will provide position, navigation and timing services for national applications. To improve accuracy, it can be augmented using GPS and pseudolites (pseudo-satellites). In this paper, the effect on DOP (Dilution of Precision) due to augmentation of the proposed constellation of IRNSS with pseudolites is investigated. GDOP is reduced to 1·75 (max) from 3·63 (max) due to augmentation of IRNSS with two airport pseudolites (APLs). Due to augmentation of IRNSS with GPS, GDOP is reduced to 2·4 (max). When IRNSS is augmented with an APL as well as with GPS, GDOP is further decreased to 1·65 (max). The regional effect on DOP due to IRNSS is also investigated at different locations in the Indian region.
ISSN:0373-4633
1469-7785
DOI:10.1017/S037346330999035X