India has deployed jammers to block Pakistani aircraft navigation systems

India has deployed jammers to block Pakistani aircraft navigation systems. The Indian jamming systems can disrupt multiple satellite-based navigation platforms, including GPS (US), GLONASS (Russia) and Beidou (China) - all of which are used by Pakistani military craft, sources said.

India has deployed advanced jamming systems along its western border to jam the Global Navigation Satellite System (GNSS) signals used by Pakistani military aircraft, significantly damaging their navigation and strike capabilities, sources said. 

The closure will affect all Pakistani-registered and operated aircraft across the Indian flight information zones of Delhi, Mumbai, Chennai and Kolkata.

The move follows India's closure of its airspace to all flights operating to Pakistan from April 30 to May 23.

They added that this deployment is designed to weaken Pakistan's situational awareness, targeting accuracy, and the effectiveness of precision-guided munitions in the event of any conflict or incursion.

The move comes amid rising tensions between the two countries following the terror attack in Pahalgam on April 22 that killed 26 people. Days later, India issued a NOTAM (Notice to Airmen) restricting its airspace to all aircraft registered, operated or leased by Pakistan – including commercial airlines and military aircraft – from April 30 to May 23.

The NOTAM was issued shortly after Pakistani airlines began rerouting to avoid Indian airspace due to concerns about Indian retaliation, the official said. With the restriction now made official, Pakistani airlines will be forced to choose longer and more expensive routes through Chinese or Sri Lankan airspace to access Southeast Asian cities like Kuala Lumpur.

The airspace closure is part of India's retaliatory measures in the wake of the Pahalgam attack. India had earlier suspended the Indus Waters Treaty and cancelled visas for Pakistani nationals. The national carrier, Pakistan International Airlines (PIA), with its 32 aircraft, is expected to be particularly affected. Many of Pakistan's flights to Southeast Asia and the Far East will now be extended by one to two hours. These diversions will require more fuel, increase crew duty time, and force rerouting or frequency cuts.