TY - JOUR N2 - Raman spectrometers are devices which enable fast and non-contact identification of examined chemicals. These devices utilize the Raman phenomenon to identify unknown and often illicit chemicals (e.g. drugs, explosives) without the necessity of their preparation. Now, Raman devices can be portable and therefore can be more widely used to improve security at public places. Unfortunately, Raman spectra measurements is a challenge due to noise and interferences present outside the laboratories. The design of a portable Raman spectrometer developed at the Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology is presented. The paper outlines sources of interferences present in Raman spectra measurements and signal processing techniques required to reduce their influence (e.g. background removal, spectra smoothing). Finally, the selected algorithms for automated chemicals classification are presented. The algorithms compare the measured Raman spectra with a reference spectra library to identify the sample. Detection efficiency of these algorithms is discussed and directions of further research are outlined. L1 - http://www.journals.pan.pl/Content/107074/PDF/Journal10178-VolumeXVII%20Issue4_04%20paper.pdf L2 - http://www.journals.pan.pl/Content/107074 PY - 2010 IS - No 4 EP - 559 DO - 10.2478/v10178-010-0045-1 KW - data processing algorithms KW - noise KW - interferences KW - Raman spectroscopy A1 - Wierzba, Paweł A1 - Kwiatkowski, Andrzej A1 - Smulko, Janusz A1 - Gnyba, Marcin PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation DA - 2010 T1 - Algorithms of Chemicals Detection Using Raman Spectra SP - 549 UR - http://www.journals.pan.pl/dlibra/publication/edition/107074 T2 - Metrology and Measurement Systems ER -