NDLI: The parameters design of signal processing circuit for crop canopy spectrometer based on active light source

Content Provider	IEEE Xplore Digital Library
Author	Li Yang Ding Yongqian Lin Xiangze Bi Weiping Lin Xiaolan
Copyright Year	2014
Description	Author affiliation: Jiangsu Province Eng. Lab. for Modern Facility Agric. Technol. & Equip., Nanjing, China (Li Yang; Ding Yongqian; Lin Xiangze; Bi Weiping; Lin Xiaolan)
Abstract	Based on self-developed crop canopy reflectance spectrometer, a method for measuring the reflection spectrum of crop canopy using active light source was discussed in this paper. As well as systematically introduced the measuring principle, a signal processing circuit was designed, which was applicable to detect high-frequency pulse light emitted by active light source. The effects of passive light source and signal source were given full consideration during the design process. Then, the method based on control theory was used to analyze and deduce the key parameters of the signal processing circuit. The experimental results showed that the circuit had high stability and better dynamic response performance, which could meet the needs of the crop canopy reflectance spectra detection. The impact of external ambient light on the spectrometer measuring results was almost completely filtered and the response caused by active light source was detected efficiently.
Starting Page	7370
Ending Page	7373
File Size	102347
Page Count	4
File Format	PDF
ISBN	9789881563873
ISSN	19341768
DOI	10.1109/ChiCC.2014.6896223
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-07-28
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	TCCT, CAA
Subject Keyword	Reflectivity Measurement Time-frequency analysis Frequency modulation Reflection spectrum Crop canopy Active light source Preamplifiers Agriculture Control theory Light sources
Content Type	Text
Resource Type	Article

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