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Kikuchi Lab
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The lab observes cumulonimbus clouds and lightning with next-generation weather radar.
AboutAbout the lab
Capturing heavy-rain-producing cumulonimbus clouds with next-generation radar
The Kikuchi Lab centers on developing remote sensing technology for meteorological phenomena, and researches the development of next-generation weather radar and the analysis of observation data on cumulonimbus clouds.
The lab focuses on phased array radar, which can observe in fine detail up to high altitudes at short time intervals, and aims to contribute to the prevention of weather-related disasters.
The lab also works on developing an observation system that pinpoints the positions of lightning discharges in three dimensions.
The lab conducts its research together with the members of the Center for Space and Electromagnetic Environment Research.
Key terms
- Phased array radar
- Radar that forms its beam by electronic scanning in the elevation direction, so a single rotation in the azimuth direction lets it observe the entire sky in as little as 10 seconds
- Cumulonimbus cloud
- A cloud that develops to high altitudes in a short time. Its development takes about 5 to 10 minutes, and it forms at altitudes of roughly 5 to 10 km
- Three-dimensional lightning mapping system
- A system that receives the electromagnetic waves emitted by lightning discharges with multiple sensors and locates the sources of the radiation
NewsLab news
A paper on a calibration method using phased array weather radar and the spaceborne radar DPR has been accepted for publication in IEEE JSTARS
A paper on a method for estimating ground rainfall with phased array weather radar has been accepted for publication in IEEE Access
ResearchResearch themes
Cumulonimbus clouds develop in about 5 to 10 minutes at altitudes of roughly 5 to 10 km, and parts of this process cannot be fully captured by parabolic-antenna weather radar. The lab develops next-generation weather radar and analyzes cumulonimbus observation data for the prevention of weather-related disasters.
*Illustrative imageDevelopment of Phased Array Weather Radar
Conventional parabolic radar takes 5 minutes to scan the whole sky. Phased array radar forms its beam by electronic scanning, so it can observe the entire sky in as little as 10 seconds and can also observe high altitudes densely.
*Illustrative imageThree-Dimensional Lightning Observation System
When lightning occurs, electromagnetic waves across a wide frequency band are emitted in a short time. The lab develops a three-dimensional lightning mapping system that receives these waves with multiple ground-based sensors to locate their radiation sources, and also works on algorithms for high-accuracy localization and on the design of the system.
MembersFaculty
- Associate ProfessorHiroshi Kikuchi
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “2025 NOAA HWT Phased Array Radar Activity )” NOAA National Severe Storms Laboratory / CC BY 4.0 (cropped)
- Development of Phased Array Weather Radar: “Advanced Technology Demonstrator radar antenna array 01” NOAA / Public domain (cropped)
- Three-Dimensional Lightning Observation System: “London MMB »1E6 Lightning” mattbuck (category) / CC BY-SA 4.0 (cropped)
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