wkc 發表於 2018-1-27 08:08:48

GPS 精度30cm 產品

The world’s first dual frequency GNSS receiver with centimeter accuracy for consumer LBS
https://www.broadcom.com/blog/word-on-the-street-media-roundup-for-broadcoms-bcm47755-dual-frequency-gnss-receiver?_ga=2.191032099.862990517.1517010559-619627639.1516627294

BCM47755 GPS Chip in 2018

Applications
• Smartphones
• Tablets
• Mobile accessorie
• Wearables
• Digital cameras
https://www.broadcom.com/products/wireless/gnss-gps-socs/bcm47755

wkc 發表於 2018-3-24 08:39:28

GPS Accuracy of Garmin, Polar, and other Running Watches
Accuracy : 8.1 - Polar V800
Accuracy : 7.2 - Polar M430
Accuracy : 6.6 - Garmin 920XT
Accuracy : 4.9 - Garmin 235
http://fellrnr.com/wiki/GPS_Accuracy

GPS chip
Epson U350 - Epson
Garmin 235- Mediatek MT3333
Garmin 920XT - Mediatek MT3333
Polar M430 - SiRFstar IV (Qualcomm)
Polar M600 – MediaTek MT2601
Polar V800 – SiRFstarIV (Qualcomm)
Suunto Spartan SPORT - SiRFstar V(Qualcomm)

BCM47755 - Broadcom
Third-Generation GNSS Location Hub with Dual Frequency Support
Applications
• Smartphones
• Tablets
• Mobile accessories
• Wearables
• Digital cameras
https://www.broadcom.com/products/wireless/gnss-gps-socs/bcm47755

SoCwith Wi-Fi, Bluetooth and GPS
MediaTek MT2601
Polar M600
TICWATCH S / E
......
https://www.mediatek.com/products/wearables/mt2601#

Qualcomm Snapdragon Wear 2100
LG Watch Sport
......
https://www.qualcomm.com/snapdragon/processors/wear-2100

Wear OS upgrade
https://support.google.com/wearos/thread/68278

BChung 發表於 2018-4-3 19:44:46

Garmin 235雖然唔算準，但唔會差成咁嘛…
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