GPS GM-225 receiver, is a complete satellite positioning receiver. Built in satellite receiving antenna, and using the most advanced satellite receiving core, with a full range of functions, can meet the industrial level positioning of the strict requirements and the use of personal needs. Applicable scope from car navigation, car alarm, bus station, Car DVR, car video surveillance, car DVD navigation, DVR, car audio, vehicle monitoring, vehicle terminal, tracking, security system, personal positioning, various surveys to agricultural use and so on. Use the basic needs only (appropriate power supply and the face of the sky
For vehicle traveling GPS data record, excellent positioning accuracy performance (reference satellite map track playback)
Use:
(1) professional network test GPS receiver, telecom / Unicom / bus company / ZTE / Huawei and so on all kinds of road test, necessary professional equipment.
(2) for measuring. Geodetic survey, resource exploration, cadastral survey and so on.
(3) traffic areas, ships, vehicles, aircraft positioning and navigation, vehicle and personnel tracking, logistics, intelligent transportation and so on.
(4) outdoor sports, travel adventure.
(5) electric power, telecommunications, communications network accurate timing.
Application domain:
Notebook, on board computer, palm computer navigation
Vehicle DVD navigation, vehicle DVR, on-board computer, vehicle mounted hard disk recorder
Vehicle monitoring, video monitoring, bus automatic reporting station
Timing correction, synchronization application.
characteristic
Built in TCXO device, to maintain good consistency in the temperature range of 40 to +85.
Built in a 20dB low noise amplifier and low loss filter, perfect support passive antenna.
Antenna side to build high-quality ESD protection [TVS tube, to ensure that the ESD to achieve 8KV above [air discharge].
Default support for wide area differential GPS enhancement system S137,.[S129... Wan enhanced satellite
characteristic
Main chip: G7020 U-BLOX
Built in TCXO device, to maintain good consistency in the temperature range of -40 to ~+85.
Receiving frequency band: L1 GPS
Built in a 20dB low noise amplifier and low loss filter, perfect support passive antenna.
Receiving frequency band: L1OF GLONASS
Antenna side to build high-quality ESD protection [TVS tube, to ensure that the ESD to achieve 8KV above [air discharge].
Receiving frequency band: E1B/C1 Galileo
Default support for wide area differential GPS enhancement system S137,.[S129... Wan enhanced satellite
Receiving channel: 56CH
Positioning performance
<2.5m[Autonomous][50%]
<2.0m[SBAS]
Rate: < 0.1m/s; direction: <0.5Degrees
Timing accuracy: 30ns
Reference coordinate system: WGS-84
Maximum altitude: 50000 M
Max speed: 500m/s
Acceleration: < 4G
Electrical properties:
Tracking sensitivity: -161dBm
Capture sensitivity: -147dBm
Cold start time: 30s[average
Warm start time: 30s[average]
Hot start time: 1s[average]
The auxiliary ephemeris data of AGPS[network: 3S
Operating temperature:
-40 C to C +85 C
Package size:
Φ47.8*16.5mm 
