Agnirva Space Premier League - Expedition #30835: FITSAT-1: Flashing LEDs and the Future of Satellite Communication

FITSAT-1, developed by the Fukuoka Institute of Technology and launched during Expeditions 33/34, is a brilliant example of how small satellites can revolutionize communication technology in space. Often referred to as 'Niwaka', FITSAT-1 was a 1U CubeSat — roughly the size of a small box — that was deployed from the International Space Station (ISS) with the specific goal of testing new methods of satellite communication, including optical transmission using high-powered LEDs.

This satellite was designed to emit Morse-code signals in visible light that could be received on Earth using optical telescopes. This technology demonstration aimed to explore whether LEDs could effectively be used for space-to-ground communication — an intriguing concept considering its potential for fast data transmission with minimal power use.

In addition to optical communication, FITSAT-1 tested high-speed data transmission using the 5.8 GHz band, a frequency commonly reserved for radar and Wi-Fi. The use of this frequency for satellite communication opens the door for faster, more robust data transfer capabilities that could greatly benefit future satellite missions and even interplanetary probes.

The satellite also gathered telemetry data such as temperature, voltage, and the operational status of its components. It was a student-led initiative, making it a wonderful case study of academic involvement in practical space research. The FITSAT-1 project empowered young scientists and engineers in Japan to contribute meaningfully to the global space community.

Though FITSAT-1’s mission was relatively short, it demonstrated several key technologies that are being considered for future satellites, especially those working in constellations or serving specific scientific roles. By showing that small, inexpensive CubeSats can perform advanced communication functions, FITSAT-1 helped democratize space access and inspired similar projects globally.

Join the Agnirva Space Internship Program

Get certified with over 100 hours of immersive, self-paced learning in astronomy, cosmology, space technology, and climate science through the Agnirva Space Internship Program. Join, complete virtual projects, and earn a digital certificate to showcase your space fluency in interviews, resumes, and beyond.