National Institute of Information and Communications Technology

~2ｍ~2ｍ

~2ｍ

2008(H20)・Conceptual design・Tx/Rx module and antenna (test production)

2009(H21)・ Preliminary design・ Simulation・ Development of phased array elements

2010(H22)・Critical design・Technique to eliminate ground clutter・Development of radar system

2011(H23)・Detailed design・ Development of operating technique・ Development of radar system

2012(H24)・Field experiments・ Development of data processing & analysis systems・ Sustaining design

Development of Phased Array Weather RadarWe are researching and developing a next-generation Doppler radar that measures the 3-dimensional structure of heavy rainfall, and tornadoes at a spatial resolution of 100 m within 10 sec to measure and predict sudden and localized meteorological phenomena.

Aim and plan of developing a next-generation Doppler radar

Conceptual Design

NICT-commissioned research projectToshiba & Osaka Univ.

Subject A: Development of phased array radar system・ Measures 30 x 30 x 14 km in less than 10 sec・ Grid size of less than 100 m (after coordinate conversion)・ Reduced interference technique for network observation・ Remote operation and real-time data processing & delivery・ Low-cost system with reduced maintenance costs

Subject B: Performance assessment & field experiment ・ Development of technique to reduce ground clutter ・ Technique for radar operation to satisfy user needs・ Testing and validation through field experiments to enable practical use

＜Antenna scan strategy＞3-dimensional volume scan with mechanical rotation and electrical scan・ Horizontal beam (～ 1°) created by slot-array antenna・1-dimensional active phased array in vertical - Tx: Vertical fan beam ( >3°) - Rx: Simultaneous pencil beams (～ 1°) created by DBF

＜Basic concept＞High cost performance・2-dimensional phased array radar is expensive. ・Combination of 1-dimensional array and Digital Beam Forming (DBF) to achieve 3-dimensional observation within 10 sec.