GPS module

GlobalSat BU-353

Water-Proof USB Mouse GPS Receiver - SiRF Star III (BU353)

I finally can get coordinate data from this small GPS module.
This gps module has some pros and cons.
One of the advantage of using this module is that it's relatively cheaper than other GPS module from SIRF.
SIRF is well known for their reliable product line of GPS modules.
However, since this device was designed to be used built in USB serial port, I have to hack it and jump the wire which was connected to the serial input for Serial->USB chip inside the module.

If you want to avoid messing around this, I definitely recommend buying BU-255 model which can be directly connected to serial port.




TECHINCAL DATA OF THE DEVICE
Chipset SiRF Star III (firmware version 3.1.1 with WAAS Support turned on by default)
Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
Channels 20 channel all-in-view tracking
Sensitivity -159 dBm
Accuracy Position 10 meters, 2D RMS
5 meters, 2D RMS, WAAS enabled
Time 1us synchronized to GPS time
Datum WGS-84Acquisition
Reacquisition 0.1 sec., average
Hot start 1 sec., average
Warm start 38 sec., average
Cold start 42 sec., average
Dynamic Conditions -> Altitude: 18,000 meters (60,000 feet) max
-> Velocity: 515 meters /second (1000 knots) max
-> Acceleration: Less than 4g
Jerk 20m/sec × 3<> Dimension: 53mm diameter, 19.2mm height
-> Cable length: 1.5 meters
Operating temperature -40°C to +85°C