Chinyakare topography vrs. LiDAR. Kururamisa, nguva uye mutengo.

Kuita basa neLiDAR kunogona kuva yakarurama kupfuura yeiwo maitiro ezvinyorwa zvekare? Kana iyo inoderedza nguva, mune zviyero zvipi? Inoderedza mari yakawanda sei?

Nguva dzakachinja zvechokwadi. Ndinoyeuka apo Felipe, muongorori aindishandira mumunda, achiuya aine kabhuku kemapeji makumi maviri nemashanu ezvikamu zvemuchinjikwa kugadzira mepu dzemakonduru. Ini handina kurarama nguva yekududzira pabepa asi ndinorangarira ndichizviita neAutoCAD ndisina kushandisa Softdesk zvakadaro. Saka ndakadudzira neExcel kuti ndizive kuti ndeapi chinhanho chekuisa kukwirira pakati pezvikwiriso zviviri, uye mapoinzi aya akaiswa pazvikamu zvemavara akasiyana uye nhanho, kuti pakupedzisira ndivabatanidze nemapolinesini andakashandura kuita macurves.

Nepo basa remakurukota raipenga, harina kufananidzwa nebasa remumunda iro raive hunyanzvi, kana iwe waida kuve neyakakwana dhata yekuita inogamuchirika modelling apo iyo altimetry yaive isiriyo. Zvino kwakauya SoftDesk, akafanotungamira weAutoCAD Civil3D iyo yakarerutsa kabhineti naFelipe yaive mune imwe yemakosi angu achidzidza kushandisa chiteshi chese, iyo yakaderedza nguva, yakawedzera huwandu hwemapoinzi uye zvechokwadi kunyatsoita.

Nzvimbo drones yekushandiswa kwevanhu inoputsa maparadigms matsva, pasi pemafungiro akafanana: Kuramba kushanduka mukuongorora matekinoroji nguva dzose kunotsvaga kudzikisira mutengo uye vimbiso yekunyatso. Saka muchinyorwa chino tichaongorora fungidziro mbiri dzatakanzwa ipapo:

Hypothesis 1: Kuongorora neLiDAR kunoderedza nguva uye mutengo.

Hpothesis 2: Kuongorora neLiDAR kunosanganisira kurasikirwa kwekunyatso.

Nyaya yekuedza

Magazini yacho POB yakarongeka basa iro basa rakaitwa muongororo yedata, uchishandisa nzira yakajairika pamusoro pemakiromita makumi mana. Sega, mune rechipiri basa mazuva mashoma gare gare rakagadziriswa uchishandisa LiDAR topography pamwe nemakumi maviri nematanhatu emakiromita edhamu rimwe chete. Kunyangwe zvikamu zvacho zvaive zvisina kuenzana nekure, chikamu chakaenzana chakaenzana kuita fananidzo pasi pemamiriro akafanana.

Chiitiko chepakati pezvakanyorwa

Iyo topographic ongororo yakaunganidzwa muzvikamu zvemuchinjikwa wega wega 30 metres, zvinowirirana nezviripo zviteshi. Nzvimbo dzekuyambuka dzakatorwa kumatunhu ari pasi pemamita mana.

Basa racho rakaitwa georeferenced pamwe nemapoinzi eiyo geodetic network, ayo akaverengerwa ne geodetic GPS pamwe chete nematemo, uye kubva kune aya mapoinzi mapoinzi akaongororwa achishandisa mubatanidzwa weechokwadi mareferensi zviteshi uye RTK. Zvimwe zvinongedzo zvaifanirwa kutorwa padanho rakatsetseka uye chimiro shanduko masosi kuona kuenderana kweiyo digital modhi.

Izvo zvisizvo zvakasara pakati pezvizivo zvinozivikanwa uye hutano hwakagadziridzwa neG GPS ndeavo vakaratidzwa mutafura, vachisimbisa kuti kushandiswa kwechigarire kwakarurama chaizvo.

Kuongorora kweDDD

Izvi zvakaitwa neAutonomous Unit ichibhururuka pakureba kwemamita mazana matanhatu nemakumi mapfumbamwe nemashanu, iine huwandu hwemazana gumi nemanomwe nemakumi mashanu nepfumbamwe pamamita mita. Ivo vakatora makumi maviri nematanhatu anozivikanwa ekudzora mapoinzi ndokuyambuka vachipesana neakawedzera gumi nematanhatu ekutanga-mapoinzi akaverengerwa neGeodetic GPS.

Nemapoinzi makumi matatu nepfumbamwe data reLiDAR rakagadzirwa. Kunyangwe zvaive zvisina kudikanwa sezvo marongero akatorwa neUAV iyo yakagadzirirwa GPS inogamuchira uye inodzorwa nezviteshi zvepasi, yakawana nguva dzese hushoma hwematanhatu matanhatu anoonekwa satellites uye PDOP isingasviki 37. Iwo marefu kuenda kuchiteshi chengarava haana kumbobvira akakura kupfuura makiromita makumi maviri.

Iyo seti yemakumi matanhatu nematatu ekuwedzera nzvimbo dzekutarisa dzakashanda kuratidza chokwadi cheiyo LiDAR dhata. Nezve aya mapoinzi, zvinotevera zvimiro zvakaenzana zvakawanikwa:

Munharaunda yemaguta: 2.99 cm. (9 mamaki)

Mumunda wakavhurika kana huswa hwakadzika: 2.99 cm. (38 poindi)

Musango: 2.50 cm. (3 poindi)

Mumakwenzi kana huswa hwakareba: 2.99 cm. (6 poindi)

Mufananidzo wacho unoratidza kusiyana kukuru kwehuwandu pakati pehutano hwakatorwa neLiDAR maererano nezvikamu zvemuchinjikwa zvakanyorwa mumatatu matatu.

Kusiyanisa mu Precision

Kutsvaga kwacho kunopfuura kunakidza, kupesana nekufungidzira kuti ongororo yeLiDAR haisvike pakunyatso kweongororo yakajairika. Izvi zvinotevera RMSE (Midzi inoreva zvikwereti zvikanganiso) zviyero, inova iyo paramende yekukanganisa pakati penzvimbo dzakatorwa nedare rekutarisa.

Kusiyanisa munguva

Kana zviri pamusoro zvatishamisa isu, tarisai zvakazoitika maererano nekuderedza nguva munguva yekufananidza pakati peiyo nzira yeDiDAR uye nzira yemagariro:

Nhoroondo yekuunganidza data mumunda neLiDAR yaingova 8% chete.

• Basa reKhabhiniti raingova 27% chete.
• Kugadzirisa munda + ndege + LiDAR maawa maawa nepamusoro pematare edzimba + Dare rezvematongerwo enyika rinoshandiswa, LiDAR inoda chete 19%.

Somugumisiro, maawa eA123 emabasa pamakiromita emagariro ezvinyorwa zvekare akaderedzwa kusvika maawa 4 chete pamakiromita.

Uyezve, kana ari zvachose pfungwa atora pakati nguva zvaparadzwa kubatwa pezvakaitwa uye cabinet, asi kwakajairika nzira rinokamukana vakawana 13.75 pfungwa paawa, pamusoro mamiriyoni 7.7 LiDAR pfungwa paawa.

Kusiyanisa munguva

Mari dzinoshandiswa nemidziyo yemazuva ano iyi, nema sensors aya anotora huwandu hwemapoinzi, zvinoratidza kuti basa racho rinofanira kunge richidhura. Asi mukuita, kudzikiswa kwekuunganidza nguva uye mari inoshandiswa neyakajairwa kuongorora, Mari yekupedzisira kune mutengi wemakiromita e246 akazoita neLiDAR 71% yepamusoro kupfuura mari yose yemakiromita e40 ane nzvimbo inowanikwa yepamusoro-soro!

Zvinoratidzika hazvishamisi, asi mutengo wekilometer yakatarisana neLiDAR waingova 12% kana uchienzaniswa nemagariro ekugara.

Mhedziso

Ko LiDAR topografia inonyatsotsiva chinyakare topography Kwete zvese, nekuti basa neLiDAR rinogara riine imwe nzvimbo yekutonga, asi zvinogona kugumiswa kuti nezvakanaka zvese zvemutengo, chigadzirwa chigadzirwa nenguva, basa neLiDAR rinogadzira mhedzisiro neyakaenzana mamiriro eiyo nzvimbo. zvakajairika.

Pachagara paine zvakanaka nezvakaipa; kunyatso kujeka kwenzvimbo yepamusoro ndeye nostalgic, asi kunetsekana kwekukumbira mvumo yekupinda muchivande zvivakwa, njodzi dzekugara munzvimbo dzisina kujairika, kudikanwa kwemakomba pamberi pehuswa hurefu nezvipingamupinyi… ndezvekupenga. Ehezve, kuwanda kwedziviriro yemasango kunounzawo kutadza kwayo mune iyo LiDAR, iwo haasi iwo mamwe maratidziro ehukama pakati pezvirongwa zvidiki zvakanyanya kana.

In mhedziso, tinofara kuziva kuti zvemichina yakafambira mberi zvokuti nokuti makuru okuvaka sezvo aronga, zvakakodzera kuva yakavhurika uye Kuwanikwa Mindset kuti vasarudze itsva uye zvakasikwa nzira kuti kwakaita nzvimbo yacho.