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On-line soil NIR spectroscopy: Identification and treatment of spectra influenced by variable probe distance and residue contamination
RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
2007 (engelsk)Inngår i: Precision Agriculture 2007 - Papers Presented at the 6th European Conference on Precision Agriculture, ECPA 2007, 2007, s. 125-131Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Due to the rapidity of near infrared (NIR) spectroscopy, the information about several soil properties in NIR-spectra and the possibility to build robust field instruments, NIR has gained much interest for quantitative on-line soil analysis. As the NIR region mainly consists of broad and overlapping peaks, the spectra have to be evaluated in relation to known reference samples. Especially in on-line analysis, it could be a problem to standardize conditions as sample presentation is automatic and the operator has little control over the sample presentation. In this project, we tested a prototype of a probe with a fibre optic NIR sensor and an inbuilt light source. One spectrum averaged from 50 was saved every seven meters. The spectra showed a large variation in total reflectance and spectral features. The cause for this variation and how it could be handled is discussed.

sted, utgiver, år, opplag, sider
2007. s. 125-131
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-245OAI: oai:DiVA.org:ri-245DiVA, id: diva2:936872
Konferanse
6th European Conference on Precision Agriculture, ECPA 2007. 3 June 2007 through 6 June 2007. Skiathos, Greece. Conference code: 102119.
Tilgjengelig fra: 2016-06-14 Laget: 2016-06-14 Sist oppdatert: 2016-06-29bibliografisk kontrollert

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