Thawj satellite dluab ntawm 0.41 mts.

Tom qab lub sijhawm dhau los, lub 6 ntawm lub Cuaj Hli Ntuj, thawj cov duab high-resolution teeb tsa los ntawm GeoEye-1 satellite twb tau qhia lawm.

0.41 meters ntawm kev daws teeb meem, uas txaus, xav tias qhov zoo tshaj plaws uas twb tau taug kev hauv subway.

Peb yuav tsum pom tau tias koj yuav ua tau nrog ib yam khoom zoo li no rau cadastral hom phiaj qhov twg tsis precision yog cov txij li thaum cov duab no twb muaj cov kev daws teeb meem uas siv nyob rau hauv orthophoto noj nrog aerial davhlau, vim hais tias cov teeb meem no yog los txhim kho lawv tsis precision vim hais tias qhov no twb tau rectified muaj ib cov struts qauv es yooj yim zog.

Nws yuav tsum to taub tias qhov kev daws teeb meem no tsis yog txhais tau tias yog qhov tseeb, tab sis yog thaj tsam ntawm lub pixel loj.Ua saib ntawm obelisk, qhov twg lub inclination ntawm txhaj koob tshuaj tivthaiv yog qhia nrog rau ib tug ua hauj lwm ntawm qis qhov siab. Nws yog qhov tseeb tias txoj haujlwm no muaj cov txheeb ze zoo, xws li tus dej mus "los ntawm qhov ntawd", txawm li cas los xij, cov axis ntawm tus dej los yog cov dej ntawm lub roob uas siv los txhais ib lub phiab rau ib puag ncig tsis zoo ib yam li " tus ciam teb ” txheeb xyuas ntawm lub laj kab, qhov tseeb qhov tseeb tuaj yeem mus txog 25 meters, tab sis tus tswv yuav txaus siab rau nkaug koj li 25 centimeters.

Lawv tsis tau hais ntau nrog cov lus tshaj tawm no, tab sis peb tsis xav mus dhau ntawm cov neeg thuam hauv cov qauv ntawm phau ntawv ntawd los ntawm Ken Alder hu ua "qhov ntsuas txhua yam", yog li ntawm no peb txhais cov paj huam los ntawm Mattew O'Connell, tus mere ember ntawm GeoEye:

"Peb txaus siab tso tawm thawj cov duab los ntawm GeoEye-1, uas coj peb los ze zog rau kev pib ua lag luam satellite thiab muag khoom rau peb cov neeg siv khoom. Nov yog lub sijhawm tseem ceeb, thiab peb xav ua tsaug rau peb cov neeg ua haujlwm, cov neeg siv khoom, tshwj xeeb tshaj yog National Geospatial-Intelligence Agency, cov koom tes nrog cov tswv yim, cov neeg muag khoom, thiab cov tub ua lag luam rau lawv cov kev txhawb nqa. "

Cov duab sau los ntawm GeoEye-1 muaj 41 centimeters ntawm kev daws teeb meem hauv cov xim dub thiab dawb hauv panchromatic hom thaum cov xim (cov xim muaj ntau) 1.65 metres. Tag nrho cov no tau qhia hauv chav ua yeeb yaj kiab yog cov khoom siv ntawm kev sib txuas ntawm cov duab ntawm panchromatic thiab ntau qhov kev pom los tsim cov duab daws teeb meem hauv qhov tseeb-xim ntawm 50 centimeters.

Peb tuaj yeem ua qhov tseem ceeb thaum xav tau dab tsi cov khoom no tsis tuaj yeem muab, tab sis peb yuav tsum nco ntsoov tias nws yog qhov xav tsis thoob uas cov duab no tau coj los ntawm qhov siab tsib txhiab ko taw thiab ceev ntawm 4.5 mais ntawm ib ob ... tsis muaj dab tsi los ua nrog txoj kev sib hlub ntawm ib lub dav hlau ya ntawm 5 txhiab ko taw los yog qhov kev xav ntawm cov tub hluas ntawm Xab'Earth.

Hauv kev xaus, peb yuav tsum xav kom ntau los ntawm cov khoom no tom qab qhov kev cia siab nws tau aroused, txawm hais tias nws tseem tsis tau paub meej yuav ua li cas kom tau txais cov duab no, los yog tus nqi. Koj tuaj yeem pom lwm cov piv txwv ntawm qhov txuas no thiab yog tias koj xav paub txog xov xwm lossis kev sib txuas lus los ntawm Geo-lub qhov muag, koj tuaj yeem tso npe mus rau qhov kev pabcuam no.