00000nam 2200000zi 4500 9.927682 CaOODSP 20230928155341 m o d f cr |n||||||||| 230921e199006uuabcad ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-ab DR52-5/12-1990E-PDF Ho, Jim, author. Laser detection and mapping of biological simulants III : dichotomous sampler measurements of aerosol concentrations as related to lidar signals / by J. Ho, B.T.N. Evans and G. Roy. Ralston, Alberta : Defence Research Establishment Suffield, June 1990. 1 online resource (30, [2] pages) : illustrations, charts text txt rdacontent computer c rdamedia online resource cr rdacarrier Suffield report ; no. 532 "PCN 351SQ"--title page. B.T.N. Evans and G. Roy affiliated with Defence Research Establishment Valcartier. Digitized edition from print [produced by Defence Research and Development Canada]. Includes bibliographical references (pages 12-13). "In a continuing series of investigations on biological aerosol detection by the Laser Cloud Mapper (LCM), reliable measurement of biological aerosol concentrations were found to be critical to LCM data interpretations. The sampling method must give reproducible results under difficult field conditions of rapidly changing environmental parameters. A series of trials were conducted to evaluate the Dichotomous Sampler (DS) as a device for the sampling of biological aerosols and to assess its potential for the estimation of biological aerosol concentrations during LCM trials. Sampled biological aerosols were enumerated as viable cells and provided reliable estimates of viable aerosol concentrations with respect to time. Interpretation of DS and LCM data demonstrated a relationship between cell concentrations and depolarization signal ratios which suggests that this technique has potential for remote biological aerosol detection at the 200-400 viable spores/liter level"--abstract. Optical radar in atmospheric chemistry. Biological weapons Detection. Aerosols Measurement. Chemical agents (Munitions) Lidar en chimie de l'atmosphère. Armes biologiques Détection. Aérosols Mensurations. Agents chimiques (Munitions) Technical reports lcgft Rapports techniques rvmgf Defence Research Establishment Suffield, issuing body. Canada. Department of National Defence, issuing body. Suffield report ; no. 532. (CaOODSP)9.926310 PDF 1.08 MB https://publications.gc.ca/collections/collection_2023/rddc-drdc/DR52-5-12-1990-eng.pdf DRES-532