扫描成像系统的回波信号检测方法

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Study of the optical signal detection reflected by the infrared scanning imaging systems

ZHAO Ming-jun(1,2);CHENG Hui-zhen(2);HU Yong-zhao(2);ZENG Xiao-dong(1)

(1) School of Technical Physics, Xidian Univ., Xi′an 710071， China
(2) Zhong Yuan Research Inst. of Electric Technology, Zhengzhou 450005， China

Received:1900-01-01 Revised:1900-01-01 Online:2006-02-20 Published:2006-02-20

Abstract

Abstract: In order to detect IR imaging systems working in a passive mode effectively, the retrodirective reflection of the optical systems against the incident laser is discussed and a new technique for a single frequency modulated CW laser against such targets is provided. Based on the analysis of echo signals’ characteristics, the technique for digital quadrature coherent detector by direct sampling has been used to detect such signals with a low S/N ratio and the expected results have been obtained in experiments.

Key words: scanning imaging system, infrared system, active surveillance, detect

CLC Number:

TN911.7

ZHAO Ming-jun(1;2);CHENG Hui-zhen(2);HU Yong-zhao(2);ZENG Xiao-dong(1).

Study of the optical signal detection reflected by the infrared scanning imaging systems

[J].J4, 2006, 33(1): 66-70.

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Study of the optical signal detection reflected by the infrared scanning imaging systems

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