Lumispot Imapereka chitsimikizo chapamwamba kwambiri komanso ntchito zogulitsa pambuyo pa malonda, zotsimikiziridwa ndi machitidwe amtundu wa dziko, makampani, FDA, ndi CE. Kuyankha kwamakasitomala mwachangu komanso chithandizo chokhazikika pambuyo pogulitsa.
Lembetsani ku Social Media Yathu Kuti Mutumize Posachedwa
Masensa a Airborne LiDARimatha kujambula mfundo zenizeni kuchokera ku pulse ya laser, yomwe imadziwika kuti miyeso yobwereza, kapena kujambula chizindikiro chonse pamene ikubwerera, yotchedwa full-waveform, pakapita nthawi ngati 1 ns (yomwe imakhala pafupifupi 15 cm). LiDAR yowoneka bwino imagwiritsidwa ntchito kwambiri m'nkhalango, pomwe LiDAR yobwereranso ili ndi ntchito zambiri m'magawo osiyanasiyana. Nkhaniyi ikukamba za kubweza kwa LiDAR ndikugwiritsa ntchito kwake. M'mutu uno, tikambirana mitu ingapo yokhudzana ndi LiDAR, kuphatikiza zigawo zake zoyambira, momwe zimagwirira ntchito, kulondola kwake, machitidwe, ndi zida zomwe zilipo.
Zigawo Zoyambira za LiDAR
Machitidwe a LiDAR oyambira pansi nthawi zambiri amagwiritsa ntchito ma laser okhala ndi mafunde apakati pa 500-600 nm, pomwe makina oyendetsa ndege a LiDAR amagwiritsa ntchito ma laser okhala ndi kutalika kwa mafunde, kuyambira 1000-1600 nm. Kukhazikitsa kokhazikika kwa ndege ya LiDAR kumaphatikizapo sikani ya laser, gawo loyezera mtunda (gawo loyambira), ndi machitidwe owongolera, kuyang'anira, ndi kujambula. Zimaphatikizaponso Differential Global Positioning System (DGPS) ndi Inertial Measurement Unit (IMU), yomwe nthawi zambiri imaphatikizidwa mu dongosolo limodzi lodziwika ngati malo ndi machitidwe. Dongosololi limapereka malo enieni (longitudo, latitudo, ndi kukwera) ndi data yoyang'ana (kuzungulira, kukweza, ndi mutu).
Mawonekedwe omwe laser amawunikira malowa amatha kukhala osiyanasiyana, kuphatikiza njira za zigzag, zofananira, kapena zozungulira. Kuphatikizika kwa data ya DGPS ndi IMU, pamodzi ndi mawerengedwe owerengera ndi magawo okwera, kumathandizira kuti dongosololi lizitha kukonza molondola mfundo za laser zomwe zasonkhanitsidwa. Mfundozi zimapatsidwa ma coordinates (x, y, z) mu geographic coordinate system pogwiritsa ntchito World Geodetic System ya 1984 (WGS84) datum.
Kodi LiDARZomverera ZakutaliNtchito? Fotokozani M’njira Yosavuta
Dongosolo la LiDAR limatulutsa ma pulse othamanga a laser kupita ku chinthu chomwe mukufuna kapena pamwamba.
Ma pulse a laser amawonetsa chandamale ndikubwerera ku sensa ya LiDAR.
Sensa imayesa ndendende nthawi yomwe imatengera kugunda kulikonse kupita ku chandamale ndi kubwerera.
Pogwiritsa ntchito liwiro la kuwala ndi nthawi yoyenda, mtunda wopita ku cholingacho umawerengedwa.
Kuphatikizidwa ndi malo ndi zowunikira kuchokera ku masensa a GPS ndi IMU, ma 3D olondola a 3D amawunikira amatsimikiziridwa.
Izi zimapangitsa kuti pakhale mtambo wandiweyani wa 3D womwe umayimira pamwamba kapena chinthu chojambulidwa.
Mfundo Zathupi za LiDAR
Machitidwe a LiDAR amagwiritsa ntchito mitundu iwiri ya lasers: pulsed ndi yopitirira. Machitidwe a Pulsed LiDAR amagwira ntchito potumiza kugunda kwapang'onopang'ono ndikuyesa nthawi yomwe imatengera kuti kugunda uku kuyendetse komwe chandamale ndikubwerera kwa wolandila. Kuyeza kumeneku kwa nthawi yobwerera ndi kubwerera kumathandiza kudziwa mtunda wofikira komwe mukufuna. Chitsanzo chikuwonetsedwa pazithunzi pomwe matalikidwe a siginecha yowulutsira (AT) ndi chizindikiro cholandila (AR) amawonetsedwa. Equation yoyambira yomwe imagwiritsidwa ntchito m'dongosolo lino imakhudza liwiro la kuwala (c) ndi mtunda wopita ku chandamale (R), kulola dongosolo kuti liwerengere mtunda potengera kutalika komwe kumatenga kuti kuwala kubwerere.
Kubwerera kwapadera ndi kuyeza kwathunthu kwamafunde pogwiritsa ntchito ndege ya LiDAR.
Njira yofananira ndi ndege ya LiDAR.
Njira yoyezera mu LiDAR, yomwe imawona chowunikira komanso mawonekedwe a chandamale, imafotokozedwa mwachidule ndi equation ya LiDAR. Equation iyi idasinthidwa kuchokera ku radar equation ndipo ndiyofunikira pakumvetsetsa momwe machitidwe a LiDAR amawerengera mtunda. Imalongosola mgwirizano pakati pa mphamvu ya chizindikiro chotumizidwa (Pt) ndi mphamvu ya chizindikiro cholandirira (Pr). Kwenikweni, equation imathandizira kudziwa kuchuluka kwa kuwala komwe kumabwerezedwa kwa wolandirayo pambuyo poyang'ana pa chandamale, chomwe chili chofunikira kudziwa mtunda ndi kupanga mapu olondola. Ubalewu umaganiziranso zinthu monga kuchepa kwa chizindikiro chifukwa cha mtunda komanso kulumikizana ndi malo omwe mukufuna.
Kugwiritsa ntchito kwa LiDAR Remote Sensing
Kuzindikira kwakutali kwa LiDAR kuli ndi ntchito zambiri m'magawo osiyanasiyana:
Mapu a mtunda ndi mapu a topographic popanga mitundu yokwera kwambiri ya digito (DEMs).
Mapu a nkhalango ndi zomera kuti aphunzire kapangidwe ka denga la mitengo ndi biomass.
Mapu a m’mphepete mwa nyanja ndi m’mphepete mwa nyanja pofuna kuwunika kukokoloka ndi kusintha kwa mafunde a nyanja.
Mapulani a m’matauni ndi kamangidwe ka zomangamanga, kuphatikizapo nyumba ndi maukonde amayendedwe.
Zolemba za Archaeology ndi chikhalidwe cholowa cha malo akale ndi zinthu zakale.
Kafukufuku wa geological ndi migodi popanga mapu a pamwamba ndi kuyang'anira ntchito.
Kuyenda pagalimoto pawokha komanso kuzindikira zopinga.
Kufufuza mapulaneti, monga kupanga mapu a Mars.
Mukufuna Consulation Yaulere?
Zothandizira za LiDAR:
Mndandanda wosakwanira wa magwero a data a LiDAR ndi mapulogalamu aulere amaperekedwa pansipa.Magwero a data a LiDAR:
1.Tsegulani Topographyhttp://www.opentopography.org
2.USGS Earth Explorerhttp://earthexplorer.usgs.gov
3.United States Interagency Elevation Inventoryhttps://coast.noaa.gov/ inventory/
4.National Oceanic and Atmospheric Administration (NOAA)Digital Coasthttps://www.coast.noaa.gov/dataviewer/#
5.Wikipedia LiDARhttps://en.wikipedia.org/wiki/National_Lidar_Dataset_(United_States)
6.Mtengo LIDAR pa intanetihttp://www.lidar-online.com
7.National Ecological Observatory Network—NEONhttp://www.neonscience.org/data-resources/get-data/airborne-data
8.LiDAR Data yaku Northern Spainhttp://b5m.gipuzkoa.net/url5000/en/G_22485/PUBLI&consulta=HAZLIDAR
9.LiDAR Data yaku United Kingdomhttp://catalogue.ceda.ac.uk/ list/?return_obj=ob&id=8049, 8042, 8051, 8053
Pulogalamu yaulere ya LiDAR:
1.Imafunika ENVI. http://bcal.geology.isu.edu/ Envitools.shtml
2.FugroViewer(kwa LiDAR ndi data ina ya raster/vector) http://www.fugroviewer.com/
3.FUSION/LDV(Kuwona kwa data ya LiDAR, kutembenuka, ndi kusanthula) http://forsys.cfr.washington.edu/fusion/fusionlatest.html
4.Zida za LAS(Khodi ndi mapulogalamu owerengera ndi kulemba mafayilo a LAS) http://www.cs.unc.edu/~isenburg/lastools/
5.LASUtility(Zida za GUI zowonera ndikusintha ma LASfiles) http://home.iitk.ac.in/~blohani/LASUtility/LASUtility.html
6.LibLAS(C/C++ laibulale yowerengera/kulemba mtundu wa LAS) http://www.liblas.org/
7.MCC-LiDAR(Multi-scale curvature classication for LiDAR) http://sourceforge.net/projects/mcclidar/
8.MARS FreeView(Kuwonera kwa 3D kwa data ya LiDAR) http://www.merrick.com/Geospatial/Software-Products/MARS-Software
9.Kusanthula kwathunthu(Mapulogalamu otsegula otsegula ndikuwonera mitambo ya LiDARpoint ndi ma waveform) 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.Quick Terrain Reader(Kuwonera mitambo ya LiDAR point) http://appliedimagery.com/download/ Zida zowonjezera za LiDAR zitha kupezeka patsamba la Open Topography ToolRegistry pa http://opentopo.sdsc.edu/tools/listTools.
Kuyamikira
- Nkhaniyi ikuphatikiza kafukufuku wochokera ku "LiDAR Remote Sensing and Applications" lolemba Vinícius Guimarães, 2020. Nkhani yonse ilipoPano.
- Mndandanda wathunthu uwu ndi kufotokozera mwatsatanetsatane kwa magwero a data a LiDAR ndi mapulogalamu aulere amapereka zida zofunikira kwa akatswiri ndi ofufuza pazachidziwitso chakutali komanso kusanthula malo.
Chodzikanira:
- Apa tikulengeza kuti zithunzi zina zowonetsedwa patsamba lathu zasonkhanitsidwa kuchokera pa intaneti ndi cholinga cholimbikitsa maphunziro ndi kugawana zambiri. Timalemekeza ufulu wazinthu zaluntha wa onse omwe adalenga. Kugwiritsa ntchito zithunzizi sikungofuna kupindula ndi malonda.
- Ngati mukukhulupirira kuti zilizonse zomwe zagwiritsidwa ntchito zikuphwanya ufulu wanu, chonde titumizireni. Ndife okonzeka kuchitapo kanthu moyenera, kuphatikiza kuchotsa zithunzi kapena kupereka mawonekedwe oyenera, kuti tiwonetsetse kuti tikutsatira malamulo ndi malamulo azinthu zaukadaulo. Cholinga chathu ndikusunga nsanja yomwe ili ndi zinthu zambiri, yachilungamo, komanso yolemekeza ufulu wazamisiri wa ena.
- 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.
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Nthawi yotumiza: Apr-16-2024