In News:

• India and Japan recently signed a Memorandum of Implementation (MoI) to co-develop the UNICORN (Unified Complex Radio Antenna) mast for deployment on Indian Navy ships. This pact marks a significant milestone as it is India's first military technology transfer agreement with Japan.
• The deal follows a 2015 agreement on the transfer of defense equipment and technology, further strengthening defense ties between the two countries.
• The UNICORN mast is a cutting-edge communication and radar system designed to enhance the stealth characteristics of naval vessels. This agreement is seen as an important step towards deepening India-Japan defense cooperation.

What is UNICORN?

The UNICORN mast is an advanced, integrated antenna system that combines several communication and radar components into a single conical structure or radome (a radar-absorbing dome). It is designed to reduce the radar cross-section (RCS) of ships, improving their stealth capabilities.

Key features of the UNICORN mast include:

• Integration of multiple antennas: It consolidates various antennas used for tactical data links, communications, and navigation systems (e.g., TACAN - Tactical Air Navigation System).
• Stealth enhancement: By reducing the number of exposed components and consolidating them into a single radome, the mast significantly lowers the ship’s radar signature, making it harder to detect.
• Improved performance: The mast design minimizes mutual interference between antennas, enhances maintainability, and increases lightning resistance.
• Space efficiency: It saves valuable below-deck space and reduces ship-building time by integrating multiple systems into one mast.

The UNICORN system is currently deployed on Mogami-class frigates of the Japan Maritime Self-Defence Force.

India-Japan Defense Cooperation

• 2015 Defense Technology Transfer Agreement: This pact established a framework for defense cooperation between India and Japan, paving the way for joint projects like the UNICORN mast.
• Bilateral Military Exercises:
  • Veer Guardian 2023: A bilateral exercise conducted between the Japan Air Self Defence Force (JASDF) and the Indian Air Force (IAF), which deepened defense interoperability between the two nations.
  • Tarang Shakti 2024: The first multilateral air exercise hosted by the Indian Air Force, with Japanese fighter aircraft participating.
• Andaman and Nicobar Islands Development: Japan has also provided financial aid for infrastructure development in India’s strategically located Andaman and Nicobar Islands, contributing to enhancing India’s maritime security in the region.