Science & Tech 31 October 2026
ISRO Successfully Launches NVS-03 Navigation Satellite Aboard GSLV-F18
Why in the News?
The Indian Space Research Organisation (**ISRO**) successfully launched the **NVS-03** next-generation navigation satellite aboard the **GSLV-F18** rocket at 11:51 PM IST on October 30, 2026, from the Second Launch Pad of Satish Dhawan Space Centre (SDSC-SHAR), Sriharikota.
Key Features / Major Points:
* Rocket & Orbit Details:
* The mission was executed via **GSLV-F18** (marking the 20th flight of the GSLV launch vehicle). The 50-metre tall rocket with a lift-off mass of 420 tonnes injected the **2,232 kg** NVS-03 satellite into a **Geosynchronous Transfer Orbit (GTO)**.
* The satellite is built on ISRO's I-2K satellite bus platform with a power handling capacity of around 3 kW.
* NavIC Constellation Augmentation:
* NVS-03 is the **third satellite** in the next-generation series of five navigation satellites (NVS-01 to NVS-05) designed to sustain and enhance India's regional navigation services.
* It bolsters the operational continuity of the NavIC constellation, which requires a minimum of 4 operational satellites for independent positioning services.
* Advanced Payloads & Signals:
* **Indigenous Atomic Clock:** Features an indigenously developed **Rubidium Atomic Clock** (designed by SAC, Ahmedabad) alongside imported atomic clocks for precise time-stamping.
* **L1 Signal Integration:** In addition to the existing L5 and S bands, NVS-03 carries the **L1 frequency band**, enabling direct interoperability with commercial smartphones, wearables, and civilian GPS chipsets.
* Coverage & Strategic Use:
* Provides precise positioning, velocity, and timing services across the Indian mainland and a regional envelope extending up to **1,500 km** beyond national borders.
* Offers Standard Positioning Service (SPS) for civilian users and encrypted Restricted Service (RS) for armed forces and authorized strategic agencies.
Static GK Facts:
* NavIC (Navigation with Indian Constellation):
* Former Name: **IRNSS** (Indian Regional Navigation Satellite System).
* Original Architecture: 7-satellite constellation (3 Geosynchronous & 4 Inclined Geosynchronous).
* Primary Service Area: India and up to 1,500 km from its borders.
* Geosynchronous Satellite Launch Vehicle (GSLV):
* 3-stage launch vehicle (1st: Solid, 2nd: Liquid, 3rd: Indigenous Cryogenic Upper Stage - C25).
* Indian Space Research Organisation (ISRO):
* Founded: **August 15, 1969** | Headquarters: **Bengaluru, Karnataka**.
* Founder: **Dr. Vikram Sarabhai**.
* Current Chairman: **Dr. V. Narayanan**.
* Launch Site: Satish Dhawan Space Centre (SDSC SHAR), **Sriharikota, Andhra Pradesh**.
One-Liner Quiz (All Competitive Exams):
Q: Which launch vehicle was used by ISRO to launch the NVS-03 navigation satellite on October 30, 2026?
A: GSLV-F18 (20th flight of GSLV)
Q: Which frequency band was integrated into NVS-03 to improve compatibility with civilian smartphones and consumer devices?
A: L1 Frequency Band
Q: What is the full form of India's indigenous satellite navigation system 'NavIC'?
A: Navigation with Indian Constellation
Q: Who is the current Chairman of the Indian Space Research Organisation (ISRO)?
A: Dr. V. Narayanan
#ISRO #NVS03 #GSLVF18 #NavIC #IRNSS #SpaceTechnology #CurrentAffairs #StaticGK