Source: IE
Context: The partial failure of the NVS-02 navigation satellite marks another setback for India’s indigenous Navigation with Indian Constellation (NavIC) system, highlighting challenges in maintaining a fully operational satellite navigation network.
About NavIC (Navigation with Indian Constellation):
- What is NavIC?
- NavIC, formerly known as the Indian Regional Navigation Satellite System (IRNSS), is India’s indigenous satellite navigation system designed to provide accurate positioning, navigation, and timing services over India and its surrounding regions.
- Organization: Indian Space Research Organisation (ISRO).
- Aim: NavIC aims to reduce India’s dependence on foreign navigation systems like GPS (USA), GLONASS (Russia), and Galileo (Europe) by providing a reliable and autonomous positioning system for both civilian and strategic applications.
- How it Works:
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- NavIC operates through a constellation of seven satellites: three in geostationary orbit (GEO) and four in geosynchronous orbit (GSO).
- The system uses dual-frequency signals (L5 and S bands) to provide accurate positioning data.
- Ground stations, including control centers and monitoring stations, ensure seamless operation and signal integrity.
- Features:
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- Coverage: Provides services over India and a region extending up to 1,500 km beyond its borders.
- Accuracy: Offers position accuracy better than 20 meters and timing accuracy better than 50 nanoseconds.
- Dual Services:
- Standard Positioning Service (SPS): For civilian use, including transportation, disaster management, and personal navigation.
- Restricted Service (RS): Encrypted service for strategic and military applications.
- Interoperability: NavIC signals are compatible with other global navigation systems like GPS, GLONASS, and Galileo.
- New Developments: Introduction of L1 band signals (1575.42 MHz) for enhanced civilian use, starting from 2023.
- Applications:
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- Transportation (land, air, and marine navigation).
- Disaster management and resource monitoring.
- Scientific research and surveying.
- Time synchronization for critical infrastructure.
- Strategic and defense applications.
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