CN104391343A - Correcting method for measuring errors of laser raindrop disdrometer - Google Patents

Correcting method for measuring errors of laser raindrop disdrometer Download PDF

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Publication number
CN104391343A
CN104391343A CN201410660435.9A CN201410660435A CN104391343A CN 104391343 A CN104391343 A CN 104391343A CN 201410660435 A CN201410660435 A CN 201410660435A CN 104391343 A CN104391343 A CN 104391343A
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particle diameter
laser raindrop
raindrop spectrograph
laser
spectrograph
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CN104391343B (en
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邓勇
钱昆鹏
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/18—Testing or calibrating meteorological apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

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  • Environmental & Geological Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The invention discloses a correcting method for measuring errors of a laser raindrop disdrometer. The correcting method can be used for overcoming the measuring errors due to a photoelectric technology adopted by the exiting laser raindrop disdrometer, remarkably improving rainfall quantitative measurement precision of the laser raindrop disdrometer, and obviously improving radar reflectivity factor calculating accuracy, so that the quantitative application field of the laser raindrop disdrometer is expanded. The correcting method can be used for optical rain gauges adopting other similarity principles.

Description

Laser raindrop spectrograph measuring error correction method
Technical field
The invention belongs to atmospheric science, hydrology field, the laser raindrop spectrograph be specifically related to for measuring precipitation is corrected with the udometric measuring error of the optics of identical measuring principle.
Background technology
Laser raindrop spectrograph can measure the precipitation such as rain, snow, hail in whereabouts, thus can calculate raininess, the rainfall and radar reflectivity factor etc. of various rain types.In recent years along with the introduction of the national laser raindrop spectrographs such as Germany, the U.S., along with the appearance of domestic laser raindrop spectrograph, various laser raindrop spectrograph has been widely used in the applications such as China's traffic control, weather monitoring and service, scientific research, airport are observed, road weather is monitored, hydrography, weather radar data for communication correction.
The qualitative application of laser raindrop spectrograph gains universal acceptance, but its quantitative Application still exists the problem that some need to solve.No matter be production firm, or research staff mainly pay close attention to the quantitative Application error problem of aspherical precipitation macroparticle generation so far, does not cause enough attention to a large amount of small-particles be present in light rain, moderate rain, heavy rain, even extra-heavy precipitation.About research shows that the raindrop quality that the raindrop of 1.0mm are corresponding with the raindrop of 1.2mm is respectively 524mg, 905mg, namely now the difference of 0.2mm can bring the water yield of 72.7% poor; Precipitation particles is less, and the error that the difference band of 0.2mm comes is larger.The laser raindrop spectrograph of current widespread use, due to the constraint of technology, can't obtain the signal corresponding to 0.2mm from noise, and its most I is surveyed particle diameter and is mostly 0.2mm.
For improving the precision of laser raindrop spectrograph quantitative Application, shown by our great many of experiments, must survey due to most I the measuring error that particle diameter brings to laser raindrop spectrograph to correct, thus reduce the error of precipitation intensity, quantity of precipitation and the radar reflectivity factor calculated, make laser raindrop spectrograph realize quantitative Application better.
Summary of the invention
Survey the measuring error problem that particle diameter brings for above-mentioned due to most I, the present invention proposes a kind of laser raindrop spectrograph measuring error correction method.The correct diameter of this method close to true precipitation particles substitutes the particle equivalent grain size of laser raindrop spectrograph measurement or the particle packeting average particle diameter of laser raindrop spectrograph, can significantly improve the accuracy that laser raindrop spectrograph quantitatively calculates.
The object of the invention is to propose a kind of laser raindrop spectrograph measuring error correction method, for improving the accuracy quantitatively calculated.Its method mainly comprises the following steps:
1. obtain the most I of laser raindrop spectrograph and survey particle diameter Dm.
2. correct measuring error.
Scheme one (directly correcting method):
---obtain the particle equivalent grain size Di (be called for short and measure particle diameter) that laser raindrop spectrograph is measured.
---calculate particle correct particle diameter Dt (particle diameter corrected in abbreviation) according to (1), (2) formula:
Dt＝2Rt (1)
Rt 2＝Ri 2+Rm 2(2)
Wherein, Rt is for correcting radius, and Ri=Di/2 is for measuring radius, and Rm=Dm/2 be most I survey radius.
---what in droplet collector sampling process, directly calculate each precipitation particles corrects diameter Dt, and substitutes Di calculating precipitation intensity and associated arguments with Dt.
Scheme two (indirectly correcting method):
---obtain the particle packeting average particle diameter Dj (being called for short grouping particle diameter) of laser raindrop spectrograph.
---calculate particle correct particle diameter Dt according to (1), (3) formula:
Rt 2＝Rj 2+Rm 2(3)
Wherein, Rj=Dj/2 is grouping radius.
---substitute former packeting average particle diameter Dj with the particle diameter Dt that corrects of each grouping calculated, and calculate precipitation intensity and associated arguments with Dt.
3. correct end.
Advantage of the present invention:
The present invention is by measuring directly correcting (scheme one) and indirectly correcting (scheme two) of particle diameter to laser raindrop spectrograph, the measurements and calculations precision of laser raindrop spectrograph can be significantly improved, for its quantitative Application provides more solid Science and Technology basis.The advantage of scheme one can obtain correcting value more accurately, and the advantage of scheme two does not need to revise bottom software.
Accompanying drawing explanation
Fig. 1 is the solution of the present invention one process flow diagram, and Fig. 2 is the solution of the present invention two process flow diagram.
Embodiment
Embodiments of the present invention are described in detail below in conjunction with Figure of description.
As shown in Figure 1, laser raindrop spectrograph measuring error correction method scheme one of the present invention comprises the following steps:
1.1 obtain the most I of laser raindrop spectrographs surveys particle diameter Dm.
1.2 obtain laser raindrop spectrograph measures particle diameter Di.
1.3 calculate each particle correct particle diameter Dt according to (1), (2) formulas:
1.4 substitute Di with Dt calculates precipitation intensity and associated arguments.
1.5 correct end.
As shown in Figure 2, laser raindrop spectrograph measuring error correction method scheme two of the present invention comprises the following steps:
2.1 obtain the most I of laser raindrop spectrographs surveys particle diameter Dm.
The particles grouping particle diameter Dj of 2.2 acquisition laser raindrop spectrographs.
2.3 calculate particle correct particle diameter Dt according to (1), (3) formulas:
2.4 substitute Dj with Dt calculates precipitation intensity and associated arguments.
2.5 correct end.
It is finally noted that, the object publicizing and implementing mode is to help to understand the present invention further, but it will be appreciated by those skilled in the art that: without departing from the spirit and scope of the invention and the appended claims, various substitutions and modifications are all possible.Therefore, the present invention should not be limited to the content disclosed in embodiment, and the scope that the scope of protection of present invention defines with claims is as the criterion.

Claims (4)

1. a laser raindrop spectrograph measuring error correction method surveys particle diameter Dm, to the method that measured particle or particle packeting average particle diameter are corrected based on the most I of laser raindrop spectrograph.This method is obviously improved to measure due to laser raindrop spectrograph and is surveyed less than most I the measurement and correlation computations error that particle diameter brings, and significantly improves laser raindrop spectrograph to the measuring accuracy of precipitation and the accuracy of raininess, radar reflectivity factor etc. that calculates.It is characterized in that, comprise the following steps:
1) obtain the most I of laser raindrop spectrograph and survey particle diameter Dm.
2) measuring error is corrected.
Scheme one (directly correcting method):
---obtain the particle equivalent grain size Di (be called for short and measure particle diameter) that laser raindrop spectrograph is measured.
---calculate particle correct particle diameter Dt (particle diameter corrected in abbreviation) according to (1), (2) formula,
Dt＝2Rt (1)
Rt 2＝Ri 2+Rm 2(2)
Wherein, Rt is for correcting radius, and Ri=Di/2 is for measuring radius, and Rm=Dm/2 be most I survey radius.
---what in droplet collector sampling process, directly calculate each precipitation particles corrects diameter Dt, and substitutes Di calculating precipitation intensity and associated arguments with Dt.
Scheme two (indirectly correcting method):
---obtain the particle packeting average particle diameter Dj (being called for short grouping particle diameter) of laser raindrop spectrograph.
---calculate particle correct particle diameter Dt according to (1), (3) formula,
Rt 2＝Rj 2+Rm 2(3)
Wherein, Rj=Dj/2 is grouping radius.
---substitute former packeting average particle diameter Dj with the particle diameter Dt that corrects of each grouping calculated, and calculate precipitation intensity and associated arguments with Dt.
3) end is corrected.
2. laser raindrop spectrograph measuring error correction method as claimed in claim 1, it is characterized in that, described laser raindrop spectrograph comprises visible ray, the laser raindrop spectrograph of infrared band and the optics rain gage of identical measuring principle.
3. laser raindrop spectrograph measuring error correction method as claimed in claim 1, it is characterized in that, described laser raindrop spectrograph comprises the laser raindrop spectrograph of single beam with multi-beam and the optics rain gage of identical measuring principle.
4. laser raindrop spectrograph measuring error correction method as claimed in claim 1, is characterized in that, described error revising comprises other Indirect Errors surveying particle diameter based on most I and corrects.
CN201410660435.9A 2014-11-19 2014-11-19 Laser raindrop spectrograph measurement error correction method Active CN104391343B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105759325A (en) * 2016-03-04 2016-07-13 凯盾洛阳智能科技有限公司 Calibration and impurity removing device for LPS (Laser Particle Spectrometer)
CN109143418A (en) * 2018-11-12 2019-01-04 北京敏视达雷达有限公司 A kind of caliberating device of laser raindrop spectrograph
CN109374484A (en) * 2018-10-16 2019-02-22 中国气象局上海台风研究所 The data quality control method of ground laser raindrop spectrograph under high wind conditions
CN113075754A (en) * 2021-04-01 2021-07-06 南京红露麟激光雷达科技有限公司 Method and device for acquiring raindrop spectrum based on coherent Doppler laser radar

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08101113A (en) * 1994-09-30 1996-04-16 Shimadzu Corp Measuring device for distribution of raindrops
JP2003149351A (en) * 2001-11-12 2003-05-21 Univ Nihon Simplified rainfall measuring device
CN101814139A (en) * 2010-04-14 2010-08-25 华中科技大学 Raindrop identifying method
CN102426400A (en) * 2011-11-03 2012-04-25 中国科学院合肥物质科学研究院 Rainfall information inversion correcting method of laser raindrop spectrograph
CN102879835A (en) * 2012-07-19 2013-01-16 中国科学院合肥物质科学研究院 Method for measuring laser rainfall weather phenomenon and laser rainfall weather phenomenon instrument
US20140137632A1 (en) * 2011-06-30 2014-05-22 Universita' Degli Studi Di Genova Device for checking the calibration of catching instruments measuring rainfall intensity

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08101113A (en) * 1994-09-30 1996-04-16 Shimadzu Corp Measuring device for distribution of raindrops
JP2003149351A (en) * 2001-11-12 2003-05-21 Univ Nihon Simplified rainfall measuring device
CN101814139A (en) * 2010-04-14 2010-08-25 华中科技大学 Raindrop identifying method
US20140137632A1 (en) * 2011-06-30 2014-05-22 Universita' Degli Studi Di Genova Device for checking the calibration of catching instruments measuring rainfall intensity
CN102426400A (en) * 2011-11-03 2012-04-25 中国科学院合肥物质科学研究院 Rainfall information inversion correcting method of laser raindrop spectrograph
CN102879835A (en) * 2012-07-19 2013-01-16 中国科学院合肥物质科学研究院 Method for measuring laser rainfall weather phenomenon and laser rainfall weather phenomenon instrument

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘俊 等: "一种激光雨滴谱仪小雨滴检测方法", 《气象科技》 *
徐向舟 等: "雨滴粒径的测量方法及其改进研究", 《中国水土保持SWCC》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105759325A (en) * 2016-03-04 2016-07-13 凯盾洛阳智能科技有限公司 Calibration and impurity removing device for LPS (Laser Particle Spectrometer)
CN105759325B (en) * 2016-03-04 2018-03-16 凯盾洛阳智能科技有限公司 A kind of laser grain spectrometer demarcates knot screen
CN109374484A (en) * 2018-10-16 2019-02-22 中国气象局上海台风研究所 The data quality control method of ground laser raindrop spectrograph under high wind conditions
CN109374484B (en) * 2018-10-16 2021-06-04 中国气象局上海台风研究所 Data quality control method of surface laser raindrop spectrometer under strong wind condition
CN109143418A (en) * 2018-11-12 2019-01-04 北京敏视达雷达有限公司 A kind of caliberating device of laser raindrop spectrograph
CN109143418B (en) * 2018-11-12 2024-05-03 华云敏视达雷达(北京)有限公司 Calibration device of laser raindrop spectrometer
CN113075754A (en) * 2021-04-01 2021-07-06 南京红露麟激光雷达科技有限公司 Method and device for acquiring raindrop spectrum based on coherent Doppler laser radar

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