Lockheed Martin Supplies Anti-Jamming Payload for Japan Satellite

Secure satellite communications for defense networks
In defense communications and space infrastructure, secure satellite links are essential for maintaining reliable connectivity during military operations. Lockheed Martin will supply an anti-jamming communications payload for Japan’s Next-Generation Defense Satellite Communication System, a program awarded to Mitsubishi Electric by Japan’s Ministry of Defense.

The payload will support a new satellite designed for geostationary orbit, strengthening Japan’s secure communications infrastructure and improving resistance to signal interference. The system will succeed the country’s current X-band defense communications satellite, while expanding frequency capabilities to meet increasing data transmission requirements.

Anti-jamming technology for protected satellite communications
The payload developed by Lockheed Martin is designed to enhance the satellite’s ability to maintain communications in environments where signals may be subject to interference or deliberate jamming.

Anti-jamming satellite payloads typically use advanced signal processing and transmission techniques to preserve communication links even in contested electromagnetic environments. Such capabilities are particularly important for defense networks that require continuous connectivity between command centers, operational units, and allied partners.

The system will also enable interoperability with allied and partner nations, supporting coordinated communications during joint operations.

Collaborative satellite development between Japan and the United States
The satellite program is being developed through collaboration between Mitsubishi Electric and Lockheed Martin. Lockheed Martin will design and manufacture the communications payload at its facilities in Colorado, while Mitsubishi Electric will conduct the final assembly, integration, and testing (AI&T) in Japan.

Following completion of these stages, the satellite will be delivered as a domestically produced defense communications system for the Japanese government. Locating final system integration in Japan supports the country’s goal of maintaining national capability in satellite manufacturing and space system development.

Expanding defense communications capacity
The next-generation satellite will expand the communications capacity available to Japan’s defense infrastructure. By building on the existing X-band communications system and introducing additional frequency capabilities, the platform is intended to support growing demands for secure data transmission.

Such satellite systems are increasingly used to support real-time operational coordination, intelligence sharing, and secure communications across geographically distributed forces.

Broader cooperation in Asia-Pacific space programs
The collaboration builds on a Memorandum of Understanding (MoU) previously signed by Lockheed Martin and Mitsubishi Electric to explore joint development opportunities in geostationary defense communications satellites.

Beyond the current payload program, the two companies are evaluating potential projects to deliver additional communications satellites for Japan and other partner nations in the Asia-Pacific region.

Through such partnerships, satellite manufacturers and defense technology providers are expanding protected communications infrastructure designed to support secure operations in increasingly complex electromagnetic environments.

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