Front-End Digital Signal Processing Scheme For 206.5 MHz Atmospheric Radar Application

This paper describes the digitization and front-end digital signal processing scheme for the wind-profiling Radar operating at 206.5 MHz. The Radar operating at this frequency will have the capability to probe upto the lower Stratosphere upto ~20 km. In the present paper, the capabilities of digital receiver in performing functions like band-pass sampling at 206.5 MHz using 16 bit Analog-to-Digital Converter (ADC), Field Programmable Gate Array (FPGA) based Digital Down Conversion (DDC) are demonstrated through simulation. The latest version FPGA is chosen in the present scheme for digital receiver design due to their relatively low cost, faster processing and inbuilt reconfigurability.