gps
DESCRIPTION
TRANSCRIPT
![Page 1: Gps](https://reader033.vdocuments.mx/reader033/viewer/2022051816/546f9aaaaf79594b488b4943/html5/thumbnails/1.jpg)
An experiment to seethe iPhone 4 GPS accuracy.
Location: Valley Fair Mall, June 25th 2010
![Page 2: Gps](https://reader033.vdocuments.mx/reader033/viewer/2022051816/546f9aaaaf79594b488b4943/html5/thumbnails/2.jpg)
Experiment Design
• Compare the GPS dot accuracy on an iPhone 2, 3GS and 4 plotted on a Micello indoor map of Valley Fair Mall, San Jose, CA
• Micello Map of Valley Fair Mall is geo-accurate and the blue dot shows the location identified by the device. The surrounding circle shows the margin of error.
![Page 3: Gps](https://reader033.vdocuments.mx/reader033/viewer/2022051816/546f9aaaaf79594b488b4943/html5/thumbnails/3.jpg)
Location 1: Standing right in front of the Apple Store
iPhone 2G iPhone 3GS iPhone 4
![Page 4: Gps](https://reader033.vdocuments.mx/reader033/viewer/2022051816/546f9aaaaf79594b488b4943/html5/thumbnails/4.jpg)
iPhone 2G iPhone 3GS iPhone 4
Location 2: Center of East Lobby
![Page 5: Gps](https://reader033.vdocuments.mx/reader033/viewer/2022051816/546f9aaaaf79594b488b4943/html5/thumbnails/5.jpg)
iPhone 2G iPhone 3GS iPhone 4
Location 3: Center of West Lobby
![Page 6: Gps](https://reader033.vdocuments.mx/reader033/viewer/2022051816/546f9aaaaf79594b488b4943/html5/thumbnails/6.jpg)
iPhone 2G iPhone 3GS iPhone 4
Location 4: Central Lobby
![Page 7: Gps](https://reader033.vdocuments.mx/reader033/viewer/2022051816/546f9aaaaf79594b488b4943/html5/thumbnails/7.jpg)
Results
• The GPS accuracy as reported by the device has significantly improved from iPhone 2, to 3GS to now, iPhone 4.
• 3GS and 4 definitely give more accurate position, the margin of error is significantly less in iPhone 4.
• iPhone 4 GPS seems to be accurate to within 5 meters inside a building.