Txij li thaum xyoo 2012, tus kheej GPS tracker tau dhau los ua kev lag luam thawj qhov kev txhim kho siab tshaj plaws thiab daim ntawv thov nrog cov kab ke ua ke thiab SMS tsis siv neeg teb rau Suav chaw nyob hauv 30 vib nas this. Yav dhau los, rau qhov sib txawv ntawm qhov chaw, koj yuav tsum nrhiav qhov chaw sib koom ua ke ntawm cov khoom, nkag mus rau qhov chaw sib koom hauv Google daim ntawv qhia, thiab tom qab ntawd kawm Suav chaw nyob. Cov chaw nrhiav SIM daim npav thiab xov tooj ntawm tes tuaj yeem nrhiav tau sai.
Txij li xyoo 2012, tus kheej qhov chaw tau ua tiav qhov tseeb ntawm 5-50 meters, kom cov neeg siv tuaj yeem paub lawv tus kheej qhov chaw nyob, thiab tuaj yeem rub tawm thiab rub tawm cov ntaub ntawv tib lub sijhawm, tsis tas siv cov kev sib txuas lus ntxiv ntawm cov neeg siv wireless network. GIS rau cov chaw muab kev pabcuam kev lag luam.
Piv nrog rau cov cuab yeej siv GPS ntshiab, Ariza positioning thev naus laus zis muaj cov yam ntxwv hauv qab no hauv kev txhim kho GPS qhov chaw siv tshuab:
1) Cov neeg raug siab: nyob rau hauv cov xwm txheej zoo dua, qhov chaw qhov tseeb tuaj yeem ncav cuag 5-50m.
2) Lub sijhawm ua haujlwm luv luv: tsuas yog ob peb vib nas this mus rau kaum vib nas this los ua kom tiav qhov chaw.
Post lub sij hawm: May-11-2020
