ISRO's NavIC System Reduced to 3 Satellites After IRNSS-1F Atomic Clock Failure; PNT Services Likely Affected

KAVACH Version 4.0 Commissioned on SCR: India’s Indigenous Automatic Train Protection System Explained

KAVACH, India's indigenous Automatic Train Protection (ATP) system, has been upgraded to Version 4.0 and commissioned on the South Central Railway's Malkajgiri–Kamareddi section over 108 route km. This is crucial for UPSC as it touches infrastructure, safety technology, and comparisons with global systems like ETCS, ATC, and PTC. The article also links to Sam Pitroda committee recommendations on railway modernisation.

NavIC Constellation Drops to 3 Satellites, Fails to Provide Standalone Positioning: Govt Accepts

ISRO's NavIC system has lost its ability to provide independent navigation services because only 3 of its 7 satellites are operational, falling short of the minimum 4 required. The government has admitted this in Parliament, though timing services and emergency messaging continue. This raises concerns about India's space-based navigation self-reliance, but the armed forces mitigate risk by using NavIC as part of a multi-constellation GNSS that includes GPS, Galileo, and Glonass.

Subsea Cables Carry 99% Internet Traffic: Vulnerabilities, Ownership Concentration & India's Resilience Plan

Subsea cables carry over 99% of global internet traffic, yet their supply chain is concentrated among a few private players and hyperscalers, making them vulnerable to sabotage, cyberattacks, and economic disruption. Recent NATO, Finland, and China incidents highlight intensifying threats, while India is building repair capacity via a DoT single-window clearance portal. This is a high-yield topic for GS3 infrastructure, science-tech, and security questions.

AM/NS India Supplies 100% Steel for INS Malvan, 2nd Mahe Class ASW Shallow Watercraft Commissioned

INS Malvan, the Indian Navy's latest indigenously-built Anti-Submarine Warfare Shallow Watercraft (ASW-SWC), has been commissioned using specialised steel from AM/NS India's Hazira plant in Surat. This highlights India's growing defence indigenisation (80%+ content) and the strategic role of Gujarat's industrial ecosystem in national security.

INS Nipun Commissioned: Indian Navy's 2nd Nistar-class Diving Support Vessel Enhances Submarine Rescue Capability

INS Nipun, the Indian Navy's second Nistar-class Diving Support Vessel, was commissioned at Mumbai. Built indigenously by HSL, it enhances India's submarine rescue, deep-sea diving, and salvage capabilities, marking a step towards Aatmanirbhar Bharat in defence.

New Legal Metrology (Indian Standard Time) Rules 2026 Mandate IST Traceability for All Official Use

India has made Indian Standard Time (IST) legally enforceable under the Legal Metrology (Indian Standard Time) Rules, 2026. All official and commercial systems must synchronize to IST traceable to CSIR-NPL. This reduces reliance on foreign GPS, improves cybersecurity, and enables 'One Nation, One Time'.

18th BRICS Summit New Delhi Declaration: RSSC Expansion, Space Debris, PAROS Working Group

The 18th BRICS Summit adopted the New Delhi Declaration, underscoring progress in expanding the BRICS Remote Sensing Satellite Constellation (RSSC) to include new space agencies, strengthening space debris mitigation efforts, and advancing discussions on the Prevention of an Arms Race in Outer Space (PAROS) via an open-ended working group. This highlights deepening BRICS cooperation in space technology and security, a key area for UPSC International Relations and Science & Technology segments.

Govt to Mandate Design-in-India Chips for Smart Meters by Mid-2028, 7.24 Cr Installed

The government plans to mandate domestically designed and manufactured chips in smart meters by mid-2028 to counter cybersecurity threats and reduce import dependence. With 7.24 crore smart meters already installed under various schemes, this move also aims at cost reduction and grid modernization under the new National Electricity Policy.