Phased array of 619-element Yagi-Uda antenna for Wind Profiler Radar at Cochin University of Science and Technology

During the last 3 to 4 decades radar technology has grown into an indispensable technology for weather phenomenon detection, prediction and tracking. There are mainly two types of atmospheric radar, Doppler weather radar to detect clouds, thunder storms, cyclone etc and Wind Profiler Radars (WPR) used to detect the speed and direction of wind above the radar. In this paper we are discussing the design of 619 element Yagi-Uda antenna array for Stratosphere Troposphere Wind profiler radar(ST Radar) operating at 205MHz. Frequency was selected considering the objective of height coverage of 500m to 20Km above earth. Design is done based on the volume reflectivity and refractive index structure coefficient of atmosphere. Minimum detectable signal(MDS -150dBm) of the system is considered as design criteria.