Gwada daidaitattun bayanai na tayi na Google - Bugawa!

Google Duniya tana samar da damar yin amfani da bayaninka na tasowa tare da maɓallin API na Google mai kyauta. Tsarin Lantarki, yana amfani da wannan damar tare da sabon tauraron dan adam zuwa aikin aiki. Wannan aikin yana ba ka damar zaɓar yankin da kuma nisa tsakanin maki na grid, yana dawo da farfajiyar tare da ƙananan matakin da aka haɗa tare da Siffar Lissafi na Ƙasa da kuma siffar hoto.

Lance Maidlow of ChasmTech LLC ya gina wannan shari'ar na amfani da aka buga a cikin Shafin TwinGEO

Na kasance da masaniya game da daidaitattun bayanan da Google ya bayar. Akwai hanyoyi guda biyu da zan iya tunawa:

  • Zane-zane / zane na farko don sabon bangarori.
  • Samun dama ga labarun da ke cikin kwandon don nazarin floodplains tare da HEC-RAS 2

Don dalilai na la'akari, sai na zaɓi shafuka guda biyu:

  • Cibiyar 1 ta kasance babban sashi a Dunedin, Florida. Saboda wannan, na samo asali da sarrafawa a kan 2 miliyoyin lambobin LiDAR daga shafin yanar gizo na NOAA.
  • Shafin 2 wani yanki ne na sayar da kayayyaki a Lake County, Florida, inda muke da bayanan binciken a cikin ginin 100, da kuma cikakken bincike game da kayayyakin da ake ciki.

Aikin Satellite zuwa surface, samar da saman ga wuraren gwaje-gwaje biyu a kasa da 10 minti kowane. Sassan da aka samo daga bayanan tayi na Google sun kasance daidai lokacin da aka kwatanta bayanan LiDAR da bincike.

Duk da haka, zai zama da matukar amfani idan Google ya samar da asali da kwanan wata daga bayananka.

Sakamako yayi kama da irin wannan, duk da haka, ainihin asali na LiDAR sune 8.5 ƙananan ƙafa idan aka kwatanta da matakin duniyar da aka sani. An daidaita wannan gyare-gyaren a cikin bayanai na LiDAR a cikin Yarjejeniyar Tsarin Lantarki kafin a halicci kwakwalwa, kamar yadda aka nuna a kasa a kwatancin kwatancin bayanan bayanan tsakanin kafofin biyu. Matsakaicin matsakaici na 1 / 2, 1 / 3 da 2 / 3 sun kusan kamar. Tsawancin matsakaicin matsakaicin ƙananan 3 ƙafafi ne fiye da bayanan LiDAR. Wannan bambanci an danganta ga gaskiyar cewa maki suna da yawa a wurare masu fadi idan aka kwatanta da wuraren da itatuwa ke rufe. An samo bayanai na tauraron dan adam a cikin wani Grid na 20.

Bayan haka, an gabatar da hankali na gani na bayanai na tauraron dan adam wanda yayi kwatankwacin yanayin da ke ciki.

A wannan yanayin, dole ne a sanya kumburi a kan tudu na Google, dangane da daidaitattun daidaito da kuma siffar sassan da ke da alaka da hanyoyin da ake ciki da kuma yanayin yanayi na gidaje.

Sashen Yankin Kasuwanci

A cikin wadannan misali, kasuwanci reshe, kwane-kwane Lines aka generated daga layin wutar lantarki na 20 'tare da tauraron dan adam data, da ja masu lankwasa da aka samu daga fitarwa data a wani layin wutar na 100'.

Ilimi na gida shi ne, duk da haka, mahimmanci tun lokacin da bayanan tayi ba shi da kwanan wata da aka gano. An katse bakin ciki kuma an sanya ajiyar bayanan bayan sun tattara bayanai na Google. Hakazalika, an gina kandami mai ginin a yankin arewa maso gabashin shafin, bayan duk bayanan da aka tattara.

Asalin bayanan haɓaka na Google, ya bambanta bisa ga wurinku. Duk da yake ana iya samun ƙarin bayani game da bayanan tayi na Google daga wasu tushe, ya zama abin asiri.

Kodayake wannan bincike ba kimiyya ba ne, zai iya nuna cewa anan yarda da bayanan Google da za a iya la'akari da tsarin zane-zane na ƙauyuka ko kuma samar da tashar basin, wanda za'a iya amfani dashi don binciken ambaliyar da aikace-aikace kamar HEC RAS 2.

Ɗaya daga cikin amsoshin "Yin gwada daidaitattun bayanai na tasowa na Google - Bugawa!"

  1. Daren rana:
    Yana da wuya a kwatanta kirki / daidaitattun bayanan da aka samo ta hanyar daban-daban.
    Matsalar ta ta'allaka ne a tsarin / tsarin lissafi wanda aka samo bayanin DEM ko lidar wanda aka kwatanta -> matakan zane, la'akari da tsarin Geoidal, iko da sauransu.
    Zan gudanar da wani nazari a Spain don in gwada Lidar na IGN, GPS RTK binciken da ke goyan baya a cikin ƙayyadaddun tsari da google duniya -> a cikin blog Zan fada abin da ya fito ....http://autodidactaengeomatica.blogspot.com/
    A gaisuwa da godiya ga gudummawarku ...
    Raúl

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