Japan Teams With Northrop Grumman to Boost Electronic Warfare Capabilities
Japan is moving towards further enhancing its electronic warfare (EW) capabilities through a collaboration with US defense giant Northrop Grumman.
Both are exploring joint efforts to build local capabilities, as well as data optimization and threat simulation, to strengthen Tokyo’s ability to handle the entire EW cycle from enemy detection, exploitation, deception, and denial, as well as protection of friendly forces.
The collaboration comes amid rising Indo-Pacific tensions and growing regional security concerns involving China and Japan in areas such as Taiwan and the South China Sea.
Northrop Grumman’s EW Solutions
Northrop Grumman highlighted two EW technologies to meet Japan’s goal: the CEESIM (Combat Electromagnetic Environment Simulator) and JTE (Joint Threat Emitter).
CEESIM replicates realistic combat environments filled with electronic activity and simulates electronic threats coming from different directions, helping engineers and operators evaluate and integrate EW systems in specialized testing facilities and military test ranges.
The advanced simulator has been operational since 1983, supporting various EW programs, such as Northrop’s ALQ-257 Integrated Viper Electronic Warfare Suite, ALQ-251 Radio Frequency Countermeasures, and the APR-39E(V)2 Digital Radar Warning Receiver.
Meanwhile, the JTE is an advanced, reactive training system that helps Japan’s warfighters to practice identifying and countering enemy missile and artillery threats.









