Processing of multi-carrier phase-modulated signals of a heterodyne interference detecting system

Author

Meng, Fanyong ; Li, Zhigang ; Guo, Zhuanyun ; Zhou, Dachuan

Author_Institution

Hebei Univ. of Technol., Tianjin, China

Volume

8

fYear

2010

fDate

16-18 Oct. 2010

Firstpage

3959

Lastpage

3962

Abstract

A heterodyne interference detecting system for long distance security pre-warning are introduced. Analyzed the generation principles of the multi-carrier phase-modulated signals, according to the purpose of signal processing, realized the intrusion event judgment and positioning by means of power spectrum analysis, extracted the modulated signals caused by the intrusion event by means of phase-lock-loop technique. Several factors maybe affecting system performance are analyzed and corresponding solutions are proposed.

Keywords

heterodyne detection; interference (signal); optical modulation; optical signal detection; phase modulation; signal processing; spectral analysis; intrusion event judgment; laser heterodyne interference detecting system; long distance security prewarning; multicarrier phase-modulated signal processing; phase-lock-loop technique; power spectrum analysis; Bandwidth; Frequency modulation; Interference; Phase modulation; Spectral analysis; Vibrations; heterodyne interference; multi-carrier; phase lock loop; pre-warning;

fLanguage

English

Publisher

ieee

Conference_Titel

Image and Signal Processing (CISP), 2010 3rd International Congress on

Conference_Location

Yantai

Print_ISBN

978-1-4244-6513-2

Type

conf

DOI

10.1109/CISP.2010.5647445

Filename

5647445