INDIAN MST RADAR .1. SYSTEM DESCRIPTION AND SAMPLE VECTOR WIND MEASUREMENTS IN ST MODE

An MST radar operating at 53 MHz with an average power aperture product of 7 x 10(8) W m(2) has been established at Gadanki (13.5 degrees N, 79.2 degrees E), India. The radar development has been accomplished in two phases. In the first phase it was commissioned in ST mode using a partial system comprising one quarter (16 x 16)of the Yagi antenna array and 16 driver units of the transmitters providing an average power aperture product of 4.8 x 10(6) W m(2). In this part we present the radar system description, including off-line data processing, and some sample high-resolution vector wind measurements made in ST mode operation.