Intshayelelo
Ukususela ekupheleni kweminyaka yoo-1960 nasekuqaleni kweminyaka yoo-1970, uninzi lweenkqubo zemveli zokufota emoyeni ziye zathathelwa indawo ziinkqubo ze-electro-optical kunye neze-elektroniki zokufota emoyeni. Ngelixa ukufota emoyeni kwendabuko kusebenza ikakhulu kubude bokukhanya okubonakalayo, iinkqubo zanamhlanje zokufota emoyeni kunye nomhlaba ezisebenzisa i-remote sensing zavelisa idatha yedijithali egubungela ukukhanya okubonakalayo, i-infrared ebonakalisiweyo, i-thermal infrared, kunye nemimandla ye-microwave spectral. Iindlela zemveli zokutolika ngokubonakalayo kwi-air photography zisanceda. Nangona kunjalo, ukufota kude kugubungela uluhlu olubanzi lwezicelo, kubandakanya imisebenzi eyongezelelweyo efana nokumodela kwethiyori yeempawu ekujoliswe kuzo, ukulinganiswa kwezinto ze-spectral, kunye nohlalutyo lwemifanekiso yedijithali yokukhupha ulwazi.
I-remote sensing, ebhekisa kuzo zonke iinkalo zeendlela zokuchonga ezikude ezingadibaniyo, yindlela esebenzisa i-electromagnetism ukufumanisa, ukurekhoda nokulinganisa iimpawu zethagethi kwaye inkcazo yaqala ukucetyiswa ngeminyaka yoo-1950. Intsimi ye-remote sensing kunye ne-mapping, yahlulwe ngeendlela ezimbini zokuva: i-active ne-passive sensing, apho i-Lidar sensing isebenzayo, ikwazi ukusebenzisa amandla ayo ukukhupha ukukhanya kwithagethi kwaye ibone ukukhanya okubonakalayo kuyo.
Ukuqonda kunye nokuSebenza kweLidar esebenzayo
I-Lidar (ukubona ukukhanya kunye nokulinganisa) yiteknoloji elinganisa umgama ngokusekelwe kwixesha lokukhupha nokufumana imiqondiso yelaser. Ngamanye amaxesha i-Airborne LiDAR isetyenziswa ngokutshintshana ne-airborne laser scanning, mapping, okanye i-LiDAR.
Le yitshathi eqhelekileyo ebonisa amanyathelo aphambili okucubungula idatha yeengongoma ngexesha lokusetyenziswa kweLiDAR. Emva kokuqokelela ii-coordinates ze-(x, y, z), ukuhlela la manqaku kunokuphucula ukusebenza kakuhle kokunikezelwa kwedatha kunye nokucubungula. Ukongeza kwi-geometric processing yeengongoma zeLiDAR, ulwazi lobunzulu oluvela kwi-LiDAR feedback nalo luluncedo.
Kuzo zonke iinkqubo zokubona nokubhala iimephu ezikude, iLiDAR inenzuzo ecacileyo yokufumana imilinganiselo echanekileyo ngakumbi ngaphandle kokukhanya kwelanga kunye nezinye iziphumo zemozulu. Inkqubo eqhelekileyo yokubona kude inamacandelo amabini, i-laser rangefinder kunye ne-measure sensor yokulinganisa indawo, enokulinganisa ngokuthe ngqo imeko-bume yejografi kwi-3D ngaphandle kokuphazamiseka kwejiyometri kuba akukho mfanekiso ubandakanyekayo (ihlabathi le-3D lithathwe kwiplani ye-2D).
EMINYE YOMTHOMBO WETHU WE-LIDAR
Iinketho zoMthombo weLaser yeLiDAR ekhuselekileyo emehlweni kwisenzi
