The MU radar with an active phased array system: 2. In‐house equipment

Abstract

The MU (middle and upper atmosphere) radar of Japan uses an active phased array system. Each of 475 crossed three‐subelement yagi antennas in a circular array is provided with a 2.4‐kW peak power amplifier. This system configuration attains a very fast and almost continuous beam steerability at the total peak radiation power of 1 MW. A brief description of the in‐house equipment is presented herein.