一 用途
上的降水粒子測量設(shè)備，此設(shè)備可以實時測量單個降水粒子（如，雨、雪、雹等）的大小、形狀、聚合狀態(tài)、方向和降落速度等。通過設(shè)備軟件，還可以計算降水率、降水量和降水粒子譜等。這些數(shù)據(jù)是充分理解大氣降水過程的關(guān)鍵要素，是研究和標(biāo)定云雷達(dá)、降水雷達(dá)的*工具，適用于氣象和環(huán)境、電信和波傳播、工業(yè)應(yīng)用等領(lǐng)域。
二 原理
傳感器是由攝像頭和背光源組成，攝像頭將對測量區(qū)域的圖像進(jìn)行線形掃描，將采集區(qū)域內(nèi)的圖像傳輸?shù)诫娮訂卧獌?nèi)處理存儲，然后用專業(yè)配套軟件進(jìn)行一系列分析。
三 組成
設(shè)備由測量單元、筆記本電腦、供電單元三部分構(gòu)成。
四 產(chǎn)品特點
l 每個雨滴的前視圖
l 每個雨滴的側(cè)視圖
l 垂直降落速度
l 每個粒子的時間戳
l 雨滴直徑
l 估計雨滴的水平速度
l 令3D重建成為可能
l 降雨率與時間圖
l 雨滴粒子分布圖
l 垂直速度與等量直徑圖
l 扁率與直徑圖
l 評估單個降水粒子相態(tài)組成(固態(tài)、液態(tài)、融化、冰凍等)
l 小粒子分辨能力可達(dá)0.17mm，無大粒子尺度限制
l 時間戳分辨率達(dá)18μs
軟件主屏幕
單個粒子圖
降雨率與時間圖
垂直速度與等量直徑圖
雨滴水平速度圖
垂直速度與等量直徑分布圖
五 技術(shù)參數(shù)
l 垂直方向分辨率：優(yōu)于0.17 mm，veloc. < 10 m/s
l 垂直速率準(zhǔn)確性：優(yōu)于4 %，veloc. < 10 m/s
l 采樣區(qū)域面積：100×100 mm2
l 尺寸：960 mm × 960 mm × 890 mm
l 測量單元與電腦遠(yuǎn)距離：100 m
l 電腦功率：600 W
六 應(yīng)用領(lǐng)域
七 應(yīng)用案例
氣候條件下應(yīng)用2DVD觀測降雪數(shù)據(jù)
八 參考文獻(xiàn)
l Measurements of Precipitation Characteristics by a New Distrometer
M.Sch?nhuber1), H.E.Urban1), J.P.V.Poiares Baptista2), W.L.Randeu3) and W.Riedler 3)
1) Institute for Applied Systems Technology, JOANNEUM RESEARCH, Graz/Austria
2) ESA/ESTEC (XEP), Noordwijk, The Netherlands
3) Institute of Communications and Wave Propagation, Technical University Graz/Austria
l 2D VIDEO DISDROMETER: A STUDY OF DIFFERENT CLIMATIC REGIMES
YARITZA MEJIAS-ROLON
Undergraduate Student
University of Puerto Rico at Mayag?ez
Mayag?ez, Puerto Rico
DR. V.N. BRINGI
Professor
Colorado State University
Fort Collins, Colorado
l An example of computational approach used for aerodynamic design of a rain Disdrometer Un exemple de méthode de calcul utilisée pour le dessin aérodynamique d’un disdromètre de pluie
EMAD HABIB, Graduate Research Assistant, Iowa Institute of Hydraulic Research, The University of Iowa, Iowa City, IA, 52242 USA
WITOLD F. KRAJEWSKI, Professor, Iowa Institute of Hydraulic Research, The University of Iowa, Iowa City, IA, 52242 USA
l WEATHER RADAR VERSUS 2D-VIDEO-DISTROMETER DATA
M. Sch?nhuber1), H.E. Urban1), J.P.V. Poiares Baptista2), W.L. Randeu3) and W. Riedler3)
1) Institute for Applied Systems Technology, JOANNEUM RESEARCH, Graz/Austria
2) ESA/ESTEC (XEP), Noordwijk, The Netherlands
3) Institute of Communications and Wave Propagation, Technical University Graz/Austria
l OBSERVATIONS OF WINTER STORMS WITH 2-D VIDEO DISDROMETER AND POLARIMETRIC RADAR
Kyoko Ikeda*, Edward A. Brandes, and Guifu Zhang
National Center for Atmospheric Research, Boulder, Colorado
Real-time measurements and analyses of precipitation micro-structure and dynamics W. L. Randeu1,2, M. Sch¨onhuber1, and G. Lammer1
1Institute of Applied Systems Technology, Joanneum Research GmbH, Graz/Austria
2Institute of Communications and Wave Propagation, Technical University Graz, Austria
l DROP SIZE DISTRIBUTIONS IN OKINAWA, JAPAN, FROM 2D-VIDEO DISTROMETER AND C-BAND POLARIMETRIC RADAR
V.N. Bringi (1), K. Nakagawa (2), M. Thurai (1,2), H. Hanado (2), T. Iguchi (2)
Colorado State University, (2) Communications Research Laboratory, Japan
(thurai@crl.go.jp/: +1-970-491-2249)
l Investigation of rainfall microstructure and variability using vertically pointing radar and disdrometer M. Diederich1, S. Crewell1, C. Simmer1, and R. Uijlenhoet2
1Meteorological Institute University of Bonn
2Department of Environmental Sciences Wageningen University
l Z-R (Radar Reflectivity-Rain rate) relationships derived from Czech Distrometer data
Fiˇser
Institute of Atmospheric Physics, AS CR, Bocni II, 1401, 141 31 Prague, Czech Republic
l A Method For Estimating Rain Rate And Drop Size Distribution From Polarimetric Radar Measurements
Guifu Zhang, J. Vivekanandan, and Edward Brandes
National Center for Atmospheric Research
Research Application Program
P. O. Box 3000, Boulder, Colorado 80307
: 303-497-8402, : 303-497-8401
l Sensitivity of 5-cm Wavelength Polarimetric Radar Variables to Raindrop Axial Ratio and Drop Size Distribution
T. D. KEENAN
Bureau of Meteorology Research Centre, Melbourne, Victoria, Australia
L. D. CAREY
Colorado State University, Fort Collins, Colorado
D. S. ZRNIC′
NOAA/National Severe Storms Laboratory, Norman, Oklahoma
P. T. MAY
Bureau of Meteorology Research Centre, Melbourne, Victoria, Australia
(Manuscript received 16 November 1999, in final form 11 May 2000)
l Spurious power-law relations among rainfall and radar parameters By A. R. JAMESON1¤ and A. B. KOSTINSKI
1RJH Scienti. c, Inc., USA
2Michigan Technological University, USA
(Received 3 March 2001; revised 21 January 2002)
l EXPERIMENTAL AND NUMERICAL STUDIES OF SMALL-SCALE RAINFALL MEASUREMENTS AND VARIABILITY
W. F. Krajewski, A. Kruger and V. Nespor Iowa Institute of Hydraulic Research, The University of Iowa, Iowa City, Iowa 52242, USA
l NOTES AND CORRESPONDENCE When is Rain Steady
R. JAMESON RJH Scientific, Inc., El Cajon, California B. KOSTINSKI
Department of Physics, Michigan Technological University, Houghton, Michigan 24 November 2000 and 27 July 2001
