A weak signal pse-nonuniform sampling method and system to beyond the Nyquise limit

Author

Cai, Xiangping ; Li, Dong

Author_Institution

Inst. of Photo-Electr. Inf. Eng., Beijing Inf. Sci. & Technol. Univ., Beijing, China

Volume

1

fYear

2010

fDate

9-11 July 2010

Firstpage

640

Lastpage

642

Abstract

The theory of nonuniformly sampling can process signals with components whose frequencies exceed the Nyquist limit. The disadvantage of nonuniformly sampling is hard to realize and process the weak signal. A method for pse-nonuniform sampling to process weak signal is proposed. It combines sampling rate with amplitude of signals. It make the most of some special samples that it is help to process signal so it is very effective to suppress noise. It can estimate exactly the frequency of weak signal when Signal-to-Noise Ratio (SNR) is below -15dB. The Pse-nonuniform system based on Digital Signal Processor and Field Programmable Gate Array is realized in this paper.

Keywords

digital signal processing chips; field programmable gate arrays; noise; signal sampling; Nyquise limit; digital signal processor; field programmable gate array; noise suppression; signal processing; signal-to-noise ratio; weak signal Pse-nonuniform sampling method; Weak Signal; nonuniformly; sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Science and Information Technology (ICCSIT), 2010 3rd IEEE International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-5537-9

Type

conf

DOI

10.1109/ICCSIT.2010.5564734

Filename

5564734