low cost gps module GM20

high sensitivity gps modules size:20*25mm low power consumption base on Atheros chips

The Skylab GM20 base on Atheros chips is a complete GPS  module that features super sensitivity, ultra low power and small form factor. The GPS signal is applied to the antenna input of module, and a complete serial data message with position, velocity and time information is presented at the serial interface with NMEA protocol or custom protocol.

Its -160dBm tracking sensitivity extends positioning coverage into place like urban canyons and dense foliage environment where the GPS was not possible before. The small form factor and low power consumption make the module easy to integrate into portable device like PNDs, mobile phones, cameras and vehicle navigation systems.

Performance Specification

Parameter	Specification
Receiver Type	L1 frequency band, C/A code, 20-channels
Sensitivity	Tracking Acquisition	-160dBm -144dBm
Accuracy	Position Velocity Timing (PPS)	3m 2D RMS without SA 0.1m/s without SA 60ns RMS
Acquisition Time	Cold Start Warm Start Hot Start Re-Acquisition	36s 30s 2s <1s
Power Consumption	Tracking Acquisition Sleep/Standby	35mA @ 3V Vcc 35mA 1mA
Navigation Data Update Rate	1Hz
Operational Limits	Altitude Velocity Acceleration	Max 18,000m Max 515m/s Less than 4g

low cost gps module GM20