期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2014
卷号：5
期号：3
页码：3953-3956
出版社：TechScience Publications
摘要：Spectroscopy is an emerging technology, having vast applications in food industry and agriculture. The unique quality of Spectroscopy to characterize material from the reflection or absorbance has been used in the current paper to measure soil Nitrogen content. Taking into account the advantages of Near Infrared (NIR) region over other regions of electromagnetic spectrum, NIR Spectroscopy was decided to be employed for Soil Nitrogen measurement. An expensive, bulky, non-portable Spectrometer was successfully replaced by a small, portable assembly consisting of six LEDs (940, 1050, 1100, 1200, 1300, 1550) corresponding to six Nitrogen sensitive wavebands and six photo-detectors. The detailed structure design and experimental procedure has been described in the paper. Device was calibrated using the most commonly used Partial Least Square Regression (PLSR) analysis which acquired a calibration coefficient of determination (R2) 0.875 and Validation R2 0.803.
关键词：Spectroscopy; Near Infrared (NIR); Spectrometer;Partial Least Square Regression (PLSR); coefficient of;determination (R2)
