UPSC Current Affairs Pointers of the past week | December 22 to December 28, 2025

Don't miss out on important current affairs tidbits for your Prelims and Mains preparation. Learn about: Personality rights, ...
Interesting Engineering

China could enable stealth jets turn enemy radar beams into power with its 6G smart surface

Researchers in China have developed a reconfigurable intelligent surface (RIS) that harvests energy from enemy radar.
Navy Times

The real story of how NORAD began tracking Santa Claus

Seventy years ago, a wrong number prompted the U.S. Air Force to begin issuing reports of St. Nick’s progress on Christmas ...
IEEE

Human Action Recognition Based on Bimodal Data and Spationtemporal Features Using UWB MIMO Radar

Abstract: Human action recognition (HAR) methods based on ultra-wideband (UWB) multiple-input–multiple-output (MIMO) radar have demonstrated substantial potential in complex environments. However, the ...
IEEE

Domain-Adaptive UAV Recognition Using IR-UWB Radar and a Lightweight Mamba-Based Network

Abstract: Impulse radio ultrawideband (IR-UWB) radar shows great promise for uncrewed aerial vehicle (UAV) detection due to its high resolution, strong penetration, and robustness against multipath ...
The Aviationist

X-62 VISTA to Receive Raytheon’s PhantomStrike Radar

The PhantomStrike AESA radar will be integrated on the U.S. Air Force’s X-62 VISTA as part of the recently announced Mission Systems Upgrade to expand ...