It is the world’s first G3 (GPS, Glonass, Galileo) capable GNSS receiver - a clear indication of Topcon’s technology leadership in the satellite positioning industry!
Topcon GR-3 Triple Constellation RTK GPS
GPS receiver design has taken a quantum leap forward with the new GR-3. It starts with 72 “universal” channels that support all current and planned satellite positioning signals. Then there’s the micro-tuned, precision antenna capable of receiving all G3 positioning signals with Topcon’s patented centre-mount radio antenna for superior signal tracking and interference reduction.The new GR-3 is now available with a digital UHF radio system utilising DSP technology. This technological advancement delivers far greater reliability and performance than older analog UHF technology of the past.
The GR-3 receiver incorporates a unique dual communication system, featuring both cellular and radio technology. Offering a 915 MgHz Spread Spectrum internal Tx/Rx or Digital UHF radio, the GR-3 can serve roles as either an RTK base or rover system. And by utilising the optional internal GSM/GPRS modem communication system via the easily accessible cellular SIM card slot, a user can extend their range far beyond radio capability or utilise both receivers as rover systems off a fixed base station or a network system.
The rugged magnesium I-beam construction is designed for unbeatable strength & durability – built to withstand a 2m pole drop onto concrete! The GR-3 also boasts easily accessible SD card memory and dual hot-swappable batteries for unlimited continuous operation. Internal Bluetooth wireless technology provides GR-3 users with the advantages of a completely cable-free system with any Topcon field controller.
• G3 Satellite Tracking (GPS, Glonass, Galileo)
• Digital UHF or Spread Spectrum radio
• Rugged, waterproof System Design to withstand a 2m pole drop
• Optional Internal GSM/GPRS Cellular Communication
• 72 Universal Tracking Channels
• Bluetooth Wireless Technology Standard package includes:
• GR-3 triple constellation base and rover
• FC-200 Wireless windows data recorder & holder bracket
• TopSURV Surveying Software
• Tripod, Tribrach, 2m Carbon Fibre pole
• Carry case, charger & download cables
Standard Performance Features:
• Full GPS+
• RTK 5Hz position and raw observation output
• Advanced Multipath Reduction
• Co-Op Tracking
• Cinderella Functionality
• All data and communication ports active
Specifications
Tracking
Signal
GPS/GLONASS L1/L2/L5 C/A and P Code & Carrier, Gallileo E 1/2/5a and L1, WAAS/EGNOS
Channel
72
Cold Tracking
<30 seconds
Warm Tracking
<5 seconds
Reacquisition
<1 seconds
Accuracy
Static
3mm +.5ppm horizontal, 5mm + .5ppm vertical
RTK/Kinematic
10mm + 1 ppm horizontal, 15mm + 1 ppm vertical
DGPS
> .25m Post Processing, < .50m Real time
Physical
Enclosure
Magnesium I-beam Housing, Waterproof construction
Dimensions
W: 158 x D: 158 x H: 234.5 mm
Weight
1.78 kg
Color
Topcon Grey/Yellow
Environmental
Operating Temperature
-20 to +50 degrees Celsius
Storage Temperature
-20 to +35 with batteries, -40 to +75 without batteries degrees Celsius
Waterproof
IP66
Drop
2 m
Power
Internal Battery
2 Li-Ion, 3900mAh, 7.2V
Operating Time
14 Hours
External Power
1 port(s)
Battery Charger
Dual Li-Ion "Smart" charger with optional Alkaline battery pack. Charger doubles as external power source
Communication
Bluetooth
Bluetooth standard 1.2
USB
1.1 Version
Key and LED
Key
Two keys, Power ON/Off and Function Start/stop data logging, switch to extended information mode
LED
6, one for receiver status, data recording indication, TX/Rx, Bluetooth status and 2 for indication of each battery charge level
Memory
Internal Memory
Environmentally protected, removable SD™ media card slot
