Lumispot Muab kev lees paub zoo tshaj plaws thiab kev pabcuam tom qab muag, tau ntawv pov thawj los ntawm lub tebchaws, kev lag luam tshwj xeeb, FDA, thiab CE cov txheej txheem zoo. Cov neeg siv khoom teb sai thiab kev txhawb nqa tom qab muag.
Sau npe rau peb cov social media kom tau txais cov ntawv tshaj tawm sai
Cov cuab yeej ntsuas huab cua LiDARtuaj yeem ntes tau cov ntsiab lus tshwj xeeb los ntawm lub laser pulse, hu ua discrete return measurements, lossis sau cov teeb liab tag nrho thaum nws rov qab los, hu ua full-waveform, ntawm qhov sib txawv xws li 1 ns (uas npog li 15 cm). Full-waveform LiDAR feem ntau siv hauv hav zoov, thaum discrete return LiDAR muaj cov ntawv thov dav dua thoob plaws ntau qhov chaw. Tsab xov xwm no feem ntau tham txog discrete return LiDAR thiab nws siv. Hauv tshooj no, peb yuav tham txog ntau yam tseem ceeb txog LiDAR, suav nrog nws cov khoom yooj yim, nws ua haujlwm li cas, nws qhov tseeb, cov txheej txheem, thiab cov peev txheej muaj.
Cov Cheebtsam Tseem Ceeb ntawm LiDAR
Cov tshuab LiDAR hauv av feem ntau siv cov lasers nrog cov wavelengths ntawm 500–600 nm, thaum cov tshuab LiDAR hauv huab cua siv cov lasers nrog cov wavelengths ntev dua, xws li ntawm 1000–1600 nm. Ib qho kev teeb tsa LiDAR hauv huab cua txheem suav nrog lub tshuab luam theej laser, ib chav rau kev ntsuas qhov deb (rangeing unit), thiab cov tshuab rau kev tswj hwm, kev saib xyuas, thiab kev kaw. Nws kuj suav nrog Differential Global Positioning System (DGPS) thiab Inertial Measurement Unit (IMU), feem ntau koom ua ke rau hauv ib lub tshuab hu ua qhov chaw thiab kev taw qhia. Lub tshuab no muab cov ntaub ntawv qhov chaw tseeb (longitude, latitude, thiab altitude) thiab kev taw qhia (roll, pitch, thiab heading).
Cov qauv uas lub laser luam theej thaj chaw tuaj yeem sib txawv, suav nrog zigzag, parallel, lossis elliptical paths. Kev sib xyaw ua ke ntawm DGPS thiab IMU cov ntaub ntawv, nrog rau cov ntaub ntawv calibration thiab mounting parameters, tso cai rau lub system ua tiav cov laser points uas tau sau. Cov ntsiab lus no ces raug muab cov coordinates (x, y, z) hauv ib qho geographic coordinate system siv World Geodetic System of 1984 (WGS84) datum.
LiDAR li casKev Tshawb Nrhiav Nyob DebCov HaujlwmPiav qhia yooj yim
Ib lub LiDAR system tso tawm cov laser pulses sai sai rau ib yam khoom lossis qhov chaw.
Cov laser pulses cuam tshuam tawm ntawm lub hom phiaj thiab rov qab mus rau LiDAR sensor.
Lub sensor ntsuas lub sijhawm uas nws siv rau txhua lub pulse mus rau lub hom phiaj thiab rov qab los.
Siv qhov ceev ntawm lub teeb thiab lub sijhawm mus ncig, qhov deb mus rau lub hom phiaj raug suav.
Ua ke nrog cov ntaub ntawv qhov chaw thiab kev taw qhia los ntawm GPS thiab IMU sensors, qhov kev sib koom ua ke 3D tseeb ntawm cov kev cuam tshuam laser tau txiav txim siab.
Qhov no ua rau muaj huab cua 3D ntom ntom uas sawv cev rau qhov chaw lossis khoom uas tau luam theej.
Lub Ntsiab Cai ntawm LiDAR
Cov tshuab LiDAR siv ob hom lasers: pulsed thiab continuous wave. Cov tshuab LiDAR pulsed ua haujlwm los ntawm kev xa tawm lub teeb luv luv thiab tom qab ntawd ntsuas lub sijhawm uas nws siv rau lub pulse no mus ncig rau lub hom phiaj thiab rov qab mus rau lub receiver. Qhov kev ntsuas lub sijhawm mus los no pab txiav txim siab qhov deb mus rau lub hom phiaj. Ib qho piv txwv tau pom hauv daim duab uas qhov amplitudes ntawm ob qho tib si lub teeb liab xa tawm (AT) thiab lub teeb liab tau txais (AR) tau tso tawm. Cov qauv yooj yim siv hauv lub tshuab no cuam tshuam nrog qhov ceev ntawm lub teeb (c) thiab qhov deb mus rau lub hom phiaj (R), uas tso cai rau lub tshuab xam qhov deb raws li nws siv sijhawm ntev npaum li cas rau lub teeb rov qab los.
Kev ntsuas rov qab thiab kev ntsuas puv nthwv dej siv Airborne LiDAR.
Ib qho system LiDAR uas siv huab cua.
Cov txheej txheem ntsuas hauv LiDAR, uas xav txog ob qho tib si lub tshuab ntes thiab cov yam ntxwv ntawm lub hom phiaj, yog sau los ntawm tus qauv LiDAR equation. Tus qauv no yog hloov kho los ntawm tus qauv radar thiab yog qhov tseem ceeb hauv kev nkag siab txog LiDAR systems xam qhov deb li cas. Nws piav qhia txog kev sib raug zoo ntawm lub zog ntawm lub teeb liab xa tawm (Pt) thiab lub zog ntawm lub teeb liab tau txais (Pr). Yeej, tus qauv no pab ntsuas seb lub teeb liab xa tawm ntau npaum li cas rov qab mus rau tus txais tom qab cuam tshuam tawm ntawm lub hom phiaj, uas yog qhov tseem ceeb rau kev txiav txim siab qhov deb thiab tsim cov ntawv qhia tseeb. Kev sib raug zoo no suav nrog cov yam ntxwv xws li kev txo qis ntawm lub teeb liab vim qhov deb thiab kev sib cuam tshuam nrog lub hom phiaj nto.
Cov ntawv thov ntawm LiDAR Remote Sensing
LiDAR kev tshawb nrhiav chaw deb muaj ntau daim ntawv thov thoob plaws ntau qhov chaw sib txawv:
Daim ntawv qhia av thiab daim duab qhia chaw rau kev tsim cov qauv siab digital (DEMs).
Kev kos duab hav zoov thiab cov nroj tsuag los kawm txog cov qauv ntawm cov ntoo thiab cov biomass.
Daim ntawv qhia ntug dej hiav txwv thiab ntug dej hiav txwv rau kev saib xyuas kev yaig thiab kev hloov pauv ntawm dej hiav txwv.
Kev npaj nroog thiab kev tsim qauv vaj tse, suav nrog cov tsev thiab cov kev thauj mus los.
Kev tshawb nrhiav txog keeb kwm thiab kev coj noj coj ua ntawm cov chaw keeb kwm thiab cov khoom siv.
Kev tshawb nrhiav geological thiab mining rau kev kos duab cov yam ntxwv ntawm qhov chaw thiab kev saib xyuas kev ua haujlwm.
Kev tsav tsheb tsis siv neeg thiab kev kuaj pom kev cuam tshuam.
Kev tshawb nrhiav txog lub ntiaj teb, xws li kev kos duab ntawm Mars.
Xav tau kev pab tswv yim pub dawb?
Cov Kev Pabcuam LiDAR:
Cov npe tsis tiav ntawm cov ntaub ntawv LiDAR thiab cov software pub dawb tau muab rau hauv qab no. Cov ntaub ntawv LiDAR:
1.Qhib Topographyhttp://www.opentopography.org
2.USGS Tus Neeg Tshawb Fawb Txog Lub Ntiaj Tebhttp://earthexplorer.usgs.gov
3.Tebchaws Meskas Cov Ntawv Sau Txog Kev Nce Qib Siabhttps://coast.noaa.gov/inventory/
4.Lub Koom Haum Saib Xyuas Dej Hiav Txwv thiab Huab Cua Hauv Tebchaws (NOAA)Digital Coast https://www.coast.noaa.gov/dataviewer/#
5.Wikipedia LiDARhttps://en.wikipedia.org/wiki/National_Lidar_Dataset_(United_States)
6.LiDAR Hauv Onlinehttp://www.lidar-online.com
7.Lub Koom Haum Saib Xyuas Kev Noj Qab Haus Huv Hauv Tebchaws—NEONhttp://www.neonscience.org/data-resources/get-data/airborne-data
8.Cov Ntaub Ntawv LiDAR rau Sab Qaum Teb Spainhttp://b5m.gipuzkoa.net/url5000/en/G_22485/PUBLI&consulta=HAZLIDAR
9.Cov Ntaub Ntawv LiDAR rau United Kingdomhttp://catalogue.ceda.ac.uk/ list/?return_obj=ob&id=8049, 8042, 8051, 8053
Cov Software LiDAR Dawb:
1.Yuav tsum muaj ENVI. http://bcal.geology.isu.edu/ Envitools.shtml
2.FugroViewer(rau LiDAR thiab lwm cov ntaub ntawv raster/vector) http://www.fugroviewer.com/
3.FUSION/LDV(Kev pom, kev hloov pauv, thiab kev tshuaj xyuas cov ntaub ntawv LiDAR) http:// forsys.cfr.washington.edu/fusion/fusionlatest.html
4.Cov Cuab Yeej LAS(Cov lej thiab software rau kev nyeem thiab sau cov ntaub ntawv LAS) http:// www.cs.unc.edu/~isenburg/lastools/
5.LASUtility(Ib pawg ntawm cov cuab yeej GUI rau kev pom thiab hloov pauv ntawm LAS cov ntaub ntawv) http://home.iitk.ac.in/~blohani/LASUtility/LASUtility.html
6.LibLAS(C/C++ tsev qiv ntawv rau kev nyeem/sau LAS hom ntawv) http://www.liblas.org/
7.MCC-LiDAR(Kev faib tawm ntawm ntau qhov nkhaus rau LiDAR) http://sourceforge.net/projects/mcclidar/
8.MARS Saib Dawb(Kev pom 3D ntawm cov ntaub ntawv LiDAR) http://www.merrick.com/Geospatial/Software-Products/MARS-Software
9.Kev Tshuaj Xyuas Tag Nrho(Cov software qhib rau kev ua thiab pom LiDARpoint huab thiab waveforms) http://fullanalyze.sourceforge.net/
10.Point Cloud Magic (A set of software tools for LiDAR point cloud visualiza-tion, editing, filtering, 3D building modeling, and statistical analysis in forestry/ vegetation applications. Contact Dr. Cheng Wang at wangcheng@radi.ac.cn)
11.Tus Nyeem Av Sai(Kev pom ntawm LiDAR point clouds) http://appliedimagery.com/download/ Cov cuab yeej software LiDAR ntxiv tuaj yeem pom los ntawm nplooj ntawv Open Topography ToolRegistry ntawm http://opentopo.sdsc.edu/tools/listTools.
Cov Lus Ua Tsaug
- Tsab xov xwm no suav nrog kev tshawb fawb los ntawm "LiDAR Remote Sensing and Applications" los ntawm Vinícius Guimarães, 2020. Tsab xov xwm tag nrho muaj nyob rauntawm no.
- Daim ntawv teev tag nrho thiab cov lus piav qhia ntxaws ntxaws ntawm LiDAR cov ntaub ntawv thiab cov software dawb muab cov cuab yeej tseem ceeb rau cov kws tshaj lij thiab cov kws tshawb fawb hauv kev tshawb nrhiav chaw deb thiab kev tshuaj xyuas thaj chaw.
Cov Lus Tsis Lees Paub:
- Peb tshaj tawm tias qee cov duab uas tso tawm hauv peb lub vev xaib yog tau sau los ntawm hauv internet rau lub hom phiaj ntawm kev txhawb nqa kev kawm thiab kev sib qhia cov ntaub ntawv. Peb hwm cov cai ntawm txhua tus neeg tsim thawj. Kev siv cov duab no tsis yog rau kev lag luam.
- Yog tias koj ntseeg tias cov ntsiab lus siv ua txhaum koj txoj cai lij choj, thov hu rau peb. Peb txaus siab ua cov kauj ruam tsim nyog, suav nrog kev tshem tawm cov duab lossis muab cov ntaub ntawv pov thawj kom raug, kom ntseeg tau tias ua raws li cov cai lij choj thiab cov cai ntawm kev txawj ntse. Peb lub hom phiaj yog kom muaj lub platform uas muaj cov ntsiab lus ntau, ncaj ncees, thiab hwm lwm tus txoj cai lij choj.
- Please contact us through the following contact information, email: sales@lumispot.cn. We promise to take immediate action upon receipt of any notice and guarantee 100% cooperation to resolve any such issues.
>> Cov Ntsiab Lus Sib Xws
Lub sijhawm tshaj tawm: Plaub Hlis-16-2024