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 produc t 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 i n 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 a rray and 16 driver units of the transmitters providing an average powe r 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 opera tion.