Title :
Design of large dynamic VHF interferometer for cloud flashes
Author :
Liu, Gang ; Sun, Xiubin ; Zhang, Yijun ; Yang, Songlin
Author_Institution :
Coll. of Electron. Eng., Chengdu Univ. of Inf. Technol., Chengdu, China
Abstract :
The dynamic range of VHF interferometer for cloud flashes is expanded by utilizing the digital control attenuator controlled by automatic gain control(AGC) and increasing the number of bits of ADC. The optimization of radio frequency analog front-end (RFAF) gain is described, and the design of iterative AGC is presented. The simulation results show that 110 dB dynamic range can be achieved.
Keywords :
atmospheric measuring apparatus; clouds; electromagnetic wave interferometers; RFAF gain; VHF interferometer design; automatic gain control; cloud flashes; digital control attenuator; iterative AGC design; radio frequency analog front-end; Clouds; Dynamic range; Gain; Gain control; Lightning; Optical interferometry; Simulation; AGC; Cloud Flashes; Dynamic Range; RFAF; VHF Interferometer;
Conference_Titel :
Lightning (APL), 2011 7th Asia-Pacific International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4577-1467-2
DOI :
10.1109/APL.2011.6111044
