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Home --> GPS Antenna --> GPS Receiver

GM77



Description


GM-77 is a GPS Mouse receiver build-in well-known SiRF StarIII GPS chipset. GM-77 provides customer high position, velocity and time accuracy performances as well as high sensitivity and tracking capabilities. Customers benefit from the strength of both companies. Thanks to the low power consumption technology, the GPS-Mouse receiver is ideal for many portable applications such as PDA, Tablet PC, smart phone etc.

Features
Built-in high performance SiRF Star III low power chipset.
Current consumption 40mA
20 channels parallel.
Average Cold Start in 42 seconds.
-159 dBm sensitivity in tracking mode
NMEA0183 compliant protocol

Extreme fast TTFF at low signal level

 

Applications
Automotive
Personal/Portable Navigation (PDA)
Geographic Surveying
Sports and Recreation
Marine Navigation
Fleet Management
AVL and Location-Based Services

Specifications

General

Accuracy

GPS Chip SiRF Star III LP chipset

Position

Frequency L1, 1575.42MHz 10 meters, 2D RMS

7 meters 2D RMS, WAAS corrected

1-5 meters, DGPS corrected

C/A Code 1.023MHz chip rate   0.1 m/sec
Channels 20 CH Time 1ms synchronized to GPS time
 

Datum

  WGS-84

Sensitivity

Dynamic Conditions
To ¡V 159Bm Tracking, Superior Urban Canyon Performance Altitude <18,000 m (60,000 feet)

Acquisition Rate

Velocity <515 m/sec (1,000 knots)
Cold Start 42 sec, average Acceleration <4g
Warm Start 38 sec, average Motional Jerk <20 m/sec
Hot Start 6 sec, average

GPS Protocol

Reacquisition 0.1sec, average Default: NMEA-0183,

 

GGA(1), GSA(1), GSV(1), RMC(1), Band rate 9600 bps,
Data bit : 8, stop bit : 1

Accuracy Snap start 2 sec, average

Power

Operation Power 3.5~5.0 VDC+10%
Current Consumption 70mA

Device Size

  3.3V  

Environmental

Operating Temperature - 20 °C to + 80 °C Accessories No
Relative Humidity 5% to 95% non-condensing  

Hardware Interface
The GM-77 includes an antenna in a unique style waterproof gadget. We can manufacture four kinds of Connector cable to suit your demands.








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