GPS

As of today (March 2008) the two best GPS chipsets available are the SiRF Star III and MTK MT3318. They offer fast initial fix and can utilize weak GPS signals by massive parallel correlation computing power [1].

SiRF Star III

SiRF commands

• NMEA Proprietary Commands (SiRF, NemeriX)

MTK MT3318

MTK commands

• MTK commands sheet

Other chipset brands

• SkyTraq
• Nemerix
• uBlox
• uNav
• Sony
• Fujitsu

Tools

• SiRF Demo Tool
• NMEA Monitor
• Transystem GPSView
• MiniGPS
• MTKTweak

Hacks

• Bluetooth enable commands

References

• GPSPassion Multiple GPS chipsets and receivers compared
• SiRF Star III GPS correlation power explained
• EGNOS Real Time Performance
• Discussing MTK receivers and Tips and Tweaks