Open AccessMethod and Implementation of High-speed Digital Sampling Technology Based on Impulse Radar Signal
Author(s) -
Shipeng Shen,
Ye Sheng-bo,
Guangyou Fang
Publication year - 2012
Publication title -
leida xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.301
H-Index - 13
ISSN - 2095-283X
DOI - 10.3724/sp.j.1300.2012.20022
Subject(s) - impulse (physics) , computer science , radar signal processing , signal (programming language) , radar , electronic engineering , signal processing , telecommunications , engineering , physics , quantum mechanics , programming language
A High-speed digital sampling technology suitable for periodical impulse radar signal is proposed in this paper. One bit high-speed quantize is constructed by differential comparator in FPGA. Time-interleaved digital sampling and buffer encoding are used to one bit stream based on the internal multi-phase clock of FPGA, to achieve sampling rate higher than 1 GHz. High speed digital sampling is realized by the accumulation of one bit sampling data with different comparison levels. An 8 bit, 1.6 GHz ADC based on the proposed method is realized on XC2V3000 Xilinx’s FPGA, which is successfully applied in GPR. The proposed method has the advantages of low cost and power consumption as compared with real sampling, and exhibits higher efficiency as compared with equivalent sampling