Traditional topography vrs. LiDAR. Gaskiya, lokaci da farashi.

Yin aiki tare da LiDAR zai iya zama mafi dacewa fiye da yadda ake amfani da su? Idan ta rage sau, a wace kashi? Nawa ne zai rage farashin?

Lokaci sun canza. Ina tuna lokacin da Felipe, wani masanin binciken da ya yi aikin, ya zo da wani littafi na 25 tare da shafukan giciye don samar da taswirar gefuna. Ban zauna lokacin yin magana akan takarda ba amma na tuna yin shi tare da AutoCAD ba tare da amfani da Softdesk duk da haka ba. Saboda haka ya fassara da Excel su san yadda nisa sanya girma tsakanin biyu elevations da wadannan maki tsaya a yadudduka da launuka da kuma bangarori daban-daban, ƙarshe shiga tare da polylines irlos juya a cikin masu lankwasa.

Duk da yake aikin hukuma da aka hauka, shi bai kwatanta wa fieldwork an art, idan ka so da isasshen data yi wani m tallan kayan kawa a lokacin da altimetry ya sababbu. Sa'an nan ya zo SoftDesk, tarihi na AutoCAD Civil3D cewa Sauki hukuma da kuma Felipe ya a ɗaya daga cikin darussa koyo yi amfani da jimlar tashar, wanda ya rage lokaci, da girma da maki kuma ba shakka ya karu daidaito.

Matsayin drones don amfani da jama'a karya sababbin alamu, a karkashin irin wannan ma'anar: Nasara don canzawa a cikin fasahohin topographics yana ƙoƙarin rage farashin da tabbatar da daidaito. Don haka za mu bincika a cikin wannan labarin waɗannan kalmomi biyu da muka ji a can:

Hanyar 1: Yin sipography tare da LiDAR rage sau da farashin.

2 Tsarin Halitta: Don yin rubutun asali tare da LiDAR yana nuna asarar asali.

A gwajin gwajin

Mujallar POB aiwatar da aikin da aka yi aiki a cikin tattara bayanai na wani mai amfani, ta hanyar amfani da hanyoyi masu mahimmanci tare da kilomita 40. Mahimmanci, a cikin aiki na biyu a 'yan kwanaki bayan haka an ci gaba da shi ta hanyar amfani da labarun LiDAR tare da kilomita 246 na wannan dam. Kodayake sassan ba su daidaita a nisa ba, ana kwatanta sashen daidai kamar kwatanta kwatankwacin yanayi.

Matsayi mai launi

An tattara nazarin zane-zane a sassan giciye a kowane mita na 30, daidai da tashoshin data kasance. An dauki matakan hawa a nesa kusa da mita 4.

Georeferenced aikin tare da maki na geodetic cibiyar sadarwa, wanda aka inganta tare da geodetic GPS tare da axes, kuma daga waɗannan ne maki maki ya tashi ta amfani da haɗuwa da tashoshin tunani da kuma RTK. Wajibi ne a dauki karin maki a wurare na musamman na canji na gangarawa da kuma siffar don tabbatar da daidaito na samfurin dijital.

don magance hoton

Sauran bambanci tsakanin maki da aka sani da kuma bayanan da GPS ta samu sune wadanda aka nuna a teburin, mai gaskantawa wannan tsawaitaccen al'ada yana da cikakke daidai.

Matsayi mai mahimmanci Minimum residual square
kwance 2.35 cm. 1.52 cm.
tsaye 3.32 cm. 1.80 cm.
Girma Uku 3.48 cm. 2.41 cm.

A binciken LiDAR

Anyi wannan ne tare da wani mota na mota na jiki wanda ya kai mita mita 965, tare da nauyin 17.59 maki na mita daya. Sun dawo da 26 sanannun magunguna kuma sun keta su akan 11 ƙarin mahimman bayanai na farko da aka karanta tare da GPS ta geodetic.

Tare da waɗannan 37 an nuna cewa an daidaita samfurin LiDAR. Kodayake ba ta zama dole ba tun da tsarin da UAV ya ɗauka wanda aka haɓaka da mai karɓar GPS kuma sarrafawa ta tashoshin tushe, wanda aka samo a kowane lokaci ƙananan samfurin 6 a bayyane kuma PDOP ya fi ƙasa zuwa 3. Tsarin nisa zuwa cibiyar tashar jiragen ruwa ba ta fi girma fiye da kilomita 20 ba.

Wani ɓangaren 65 ƙarin ikon sarrafawa yana aiki don tabbatar da daidaiton bayanan LiDAR. Dangane da waɗannan mahimman bayanai, mun sami waɗannan ƙayyadaddun ayoyi masu zuwa:

A cikin birane: 2.99 cm. (Maki 9)

A filin budewa ko ciyawa maras kyau: 2.99 cm. (Maki 38)

A cikin daji: 2.50 cm. (Maki 3)

A cikin shrubs ko tsayi mai tsayi: 2.99 cm. (Maki 6)

don magance hoton

Hoton yana nuna bambanci mai yawa tsakanin ma'aunin da aka ɗauka tare da LiDAR a kan giciye sassan da aka nuna a cikin matakai masu launin kore.

Differences a cikin Tsaida

Binciken ya fi ban sha'awa, akasin ra'ayin cewa LiDAR binciken ba ya kai ga ƙayyadaddun bincike. Wadannan suna RMSE (Tushen ma'anar kuskuren kuskuren), wanda shine kuskuren ɓangaren tsakanin bayanai da aka kama da kuma kulawar kulawa.

Matsayi mai launi LiDAR tadawa
1.80 cm. 1.74 cm.

Differences a Lokacin

Idan abin da ke cikin sama ya mamaye mu, ga abin da ya faru a cikin rage lokaci a hanyar daidaitawa tsakanin hanyar LiDAR da hanyar gargajiya:

Tarin bayanai a filin tare da LiDAR shine kawai 8%.

  • Ayyukan majalisar kawai kawai 27%.
  • Summing da sa'o'i filin jirgin + hukuma + Lidar da filin data + hukuma convenicional topography, Lidar ake bukata kawai 19%.

don magance hoton

A sakamakon haka, kwanakin 123 na aiki a kowace kilomita na topography na al'ada sun rage zuwa 4 hours kawai a kowace kilomita.

Bugu da ƙari, idan yawancin maki da aka raba tsakanin lokacin da aka yi amfani da shi a tafiyarwa da kuma tsarin ma'aikata, hanyar da aka saba amfani da ita ta samu 13.75 maki a kowace sa'a, a kan 7.7 miliyan maki a kowane awa na LiDAR.

Differences a Lokacin

Kwanan nan na kayan aiki na zamani, tare da waɗannan na'urori masu auna ganewa suna karɓar wannan adadi, suna zaton aikin ya kamata ya fi tsada. Amma a aikace, da rage lokaci da kuma kudaden tattarawa wanda ya haifar da yanayin da ya dace, Kudin ƙarshe ga abokin ciniki na kilomita 246 ya haifar da LiDAR 71% ƙananan fiye da farashin kusan kilomita 40 tare da zane-zane na al'ada!

Ba abin mamaki ba, amma farashin kilomita mai linzami tare da LiDAR kawai kawai 12% idan aka kwatanta da al'ada.

ƙarshe

Shin da topography gaba daya maye gurbin Traditiona Lidar topography?. Ba a duk, saboda aiki tare da Lidar ko da yaushe daukan wasu topography zuwa wuraren binciken ababen hawa, amma shi za a iya ƙarasa da cewa tare da dukan abũbuwan amfãni daga kudin, samfurin inganci da lokaci na aiki tare da Lidar haifar da sakamakon da kusan guda daidaici topography na al'ada.

Har ila yau akwai wadata da kwarewa; babban daidaituwa na topography na da ban mamaki, amma matsalolin neman izini don shigar da dukiyoyin masu zaman kansu, hadari na wuri a kan shafukan yanar gizo, wajibi ne ga gaguwa a cikewar ciyawa da ƙuntatawa ... hauka ne. Ko da yake, yawancin gandun daji na da mahimmanci a cikin batun LiDAR, kuma ba daidai ba ne ma'anar dangantaka tsakanin kananan ƙananan ayyukan.

A ƙarshe, muna masu farin san yadda fasaha ya ci gaba da har na manyan ayyukan matsayin samarwa, shi wajibi ne a yi wani bude da kuma kasancewa tunanin ficewa ga sabon da m hanyoyin da za a yi topography.

8 Amsawa zuwa “toan rubutun gargajiya na vrs. LiDAR Yi daidai, lokaci da farashi. ”

  1. Safiya ... abokai .... yana nufin amfani da drones don samar da wani bincike ... .Wene zai kasance a cikin firikwensin da / ko kayan aiki da aka nuna don tada babban yanki (1000 yana da ko fiye) tare da tsire-tsire ko tsire-tsire? inda wuri yana da wuyar gaske.
    Mafi kyau labarin !!

  2. Very mai kyau bayanai da kuma ya ba ni mai kyau view na wannan fasahar, kuma ƙarasa da cewa ga kayayyaki ne mai girma kayan aiki, amma abubuwan a yin al'ada surveying da total tashoshin daukan babban muhimmanci, bukata yi yawa sabawa Lines kwasfansu a girma da kuma tsarawa cewa ba da daidaici da ake bukata domin wani aikin in ci gaba inda 0.05m qananan kuskure sigogi da ake bukata. gaisuwa

  3. JOHAM

    Ina son KUMA KUMA KUMA ABIN ABIN DA TAMBAYOYI YA TAMBAYA YA ZA KA YI KAUTAWA KARANTA.

  4. Yana da muhimmanci mu san gaskiyar a cikin yankunan birane da yawa, tun da yake ba kowane nau'i na ayyukan ba zai iya gane ainihin lokuta da lokutan.

  5. Labari mai kyau ... !!! Ina tsammanin akwai wata shakka cewa dukkanmu muna da wani yanayi

  6. KARANTA DON SANTAWA DA DA TAMBAYOYI DA YA YA KUMA KUMA
    GASKIYA KUMA

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