Technologies for Land & Underwater Communications
Underwater Acoustic Communication and Positioning
Since conventional radio wave signals cannot propagate any significant distance through water, JAMSTEC is developing underwater communication and positioning technology utilizing sound waves. Our research focuses on increasing the data rate and accuracy of underwater acoustic communication and positioning essential for operating various underwater platforms in deep-sea exploration. Our work also includes high-rate MIMO communication using time reversal in a multipath environment in the horizontal direction.
High-rate acoustic communication.
Multi-user communication and positioning for simultaneous control and operation of AUVs.
Optical and Electromagnetic Technologies
3D Underwater Laser Scanner Development
JAMSTEC uses, with great success, our in-house 3D underwater laser ranging technology for seafloor imaging. Our research team currently develops a portable field calibration and ranging device for submarine water pressure gauges that will be used as the latest technology demonstrator.
Laser ranging technology around the target.
Target (step pedestal) appearance.
External view of the laser scanner.
- Takuya Shimura
- Kenkichi Tanioka
- Yoshitaka Watanabe
- Shojiro Ishibashi
- Kiyotaka Tanaka
- Mitsuyasu Deguchi
- Kenjiro Okadome
- Yukihiro Kida