ISRO GSLV-F15 with NVS-02: Key Details Unveiled

The Indian Space Research Organisation (ISRO) has moved the Geosynchronous Satellite Launch Vehicle (GSLV-F15) to the launchpad, carrying the NVS-02 satellite. This mission is scheduled to launch on January 29, 2025, from the Second Launch Pad (SLP) at Satish Dhawan Space Centre, SHAR in Sriharikota. The goal is to place the NVS-02 satellite into a Geosynchronous Transfer Orbit (GTO).

This will mark the eighth operational flight of the GSLV with an indigenous Cryogenic Upper Stage (CUS) and the 100th launch from India's spaceport at Sriharikota.

NVS-02: A Next-Generation Navigation Satellite

NVS-02 is the second satellite in India’s new generation of navigation satellites under the Navigation with Indian Constellation (NavIC) program.

Key Features of NVS-02:

1. Purpose: Designed to enhance NavIC’s services, including navigation, fleet management, precision agriculture, emergency response, and mobile device location.

2. Advanced Payload: Equipped with navigation payloads operating on three frequency bands (L1, L5, and S), providing improved positioning accuracy.

3. Atomic Clocks: Contains a Rubidium Atomic Frequency Standard (RAFS) for precise timekeeping.

4. Replacement Mission: It will replace the older NavIC satellite IRNSS-1E and occupy the 111.75°E orbital position.

5. Specifications: Weighs 2,250 kg, generates 3 kW power, and integrates both indigenous and imported atomic clocks.

Enhancements and Compatibility

NVS-02 features L1-band signals that ensure compatibility with global navigation satellite systems, expanding the adoption of NavIC services. The incorporation of these signals makes the system more versatile for both domestic and global users.

Development and Testing of NVS-02

The NVS-02 satellite was developed and integrated at the U R Satellite Centre (URSC) with extensive validation processes:

1. Thermal Vacuum (Thermovac) Test: Conducted during November-December 2024, simulating the harsh conditions of space to verify its performance in extreme environments.

2. Dynamic Testing: Performed in December 2024 to evaluate the satellite’s structural integrity and its ability to endure the mechanical stress during launch.

These rigorous tests confirm the satellite’s readiness for deployment, ensuring reliability and durability in orbit.

Importance of NavIC and NVS-02

NavIC is India's regional satellite navigation system aimed at providing accurate positioning, velocity, and timing information within India and up to 1,500 km beyond its borders. NVS-02 enhances the system's capabilities by introducing advanced navigation payloads, improved signal accuracy, and robust timekeeping features.

Key applications of NavIC include:

• Navigation for land, air, and sea transportation

• Emergency response during disasters

• Precision agriculture and resource management

• Fleet tracking and logistics

• Enhanced location services for mobile devices

GSLV-F15: Vehicle and Mission Highlights

The GSLV-F15 vehicle plays a critical role in ensuring the successful deployment of NVS-02. With its indigenous cryogenic stage, it represents India’s progress in satellite launch vehicle technology.

This launch not only improves India’s navigation capabilities but also marks a milestone as the 100th launch from Sriharikota, reflecting ISRO’s consistent contributions to space exploration and satellite technology.

Conclusion

The rollout of GSLV-F15 with NVS-02 underscores ISRO’s commitment to advancing India’s space and navigation technologies. By replacing older satellites and introducing advanced features, NVS-02 is set to bolster the NavIC system, making it more efficient and globally competitive.