ALPS 2
The body of the G4 is made of AZ91D magnesium alloy, which has high strength and excellent heat dissipation. The surface is sprayed with metallic paint, which makes the G4's body resistant to scratches, impacts, and rust.
The top cover of the G4 is made of polycarbonate by one-piece molding. It has good fire resistance and anti-deformation properties. GNSS signal will be received evenly from all directions.
- AVAILABILITY: AVAILABLE
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| Channels | 1698 |
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| GPS | L1, L1C, L2C, L2P, L5 |
| GLONASS | G1,G2,G3 |
| BDS | B1I,B2I,B3L,B1C,B2A,B2B,ACEBOC |
| GALILEO | E1,E5A,E5B,E6 |
| SBAS | L1C,L1A*,L5 |
| NavIC/ IRNSS | L5 |
| QZSS | L1,L2C,L5 |
| MSSL - Band | BDS-PPP, GALILEO-HAS |
| Positioning output rate | 1Hz~20Hz |
| Initialization time | < 10s |
| Initialization reliability | >99.99% |
| Code differential GNSS | Horizontal: 0.25 m + 1 ppm RMS Vertical: 0.50 m + 1 ppm RMS |
| Static(long observations) | Horizontal: 2.5 mm + 0.1 ppm RMS Vertical: 3 mm + 0.4 ppm RMS |
| Static | Horizontal: 2.5 mm + 0.1 ppm RMS Vertical: 3.5 mm + 0.4 ppm RMS |
| Rapid static | Horizontal: 2.5 mm + 0.5 ppm RMS Vertical: 5 mm + 0.5 ppm RMS |
| PPK | Horizontal: 3 mm + 1 ppm RMS Vertical: 5 mm + 1 ppm RMS |
| RTK(UHF) | Horizontal: 8 mm + 1 ppm RMS Vertical: 15 mm + 1 ppm RMS |
| RTK(NTRIP) | Horizontal: 8 mm + 0.5 ppm RMS Vertical: 15 mm + 0.5 ppm RMS |
| RTK initialization time | 2 ~ 8s |
| SBAS positioning | Typically < 5m 3DRMS |
| BANDA-L | Horizontal: 5-10cm (5-30min) Vertical: 10-30cm (5-30min) |
| IMU | Less than 10mm + 0.7 mm/° tilt to 30° |
| IMU tilt angle | 0° ~ 60° |
| Dimension | 135mm(W)×135mm(L)×84.75mm(H) |
| Weight | 890g(battery included) |
| Material | Magnesium aluminum alloy shell |
| Operating temperature | -40℃~+65℃ |
| Storage temperature | -35℃~+80℃ |
| Humidity | 100% Non-condensing |
| Waterproof/Dustproof | IP68 |
| Shock/Vibration | MIL-STD-810G(withstand 2meters pole drop onto the cement ground naturally) |
| Power supply | 6-28V DC, over voltage protection |
| Battery | Inbuilt 7.4V 6800mAh rechargeable Li-ion battery |
| Battery life*1 | Typically 20h(static), 9h(Base+UHF) 19h(Rover+UHF), 20h(Rover+Bluetooth), 19h(Rover+Cellular Network) |
| I/O Port | 5-PIN LEMO external power port + RS232 Type-C(charge+USB+OTG+Ethernet) 1 UHF antenna interface |
| Internal UHF | 2W Radio receiver and transmitter |
| Frequency range | 410-470MHz |
| Communication protocol | Farlink, Trimtalk, SOUTH, HUACE, Hi-target, Satel |
| Communication range | Typically 5km with Farlink protocol, up to 12km |
| Bluetooth | Bluetooth5.0 standard,Bluetooth2.1+EDR |
| NFC Communication | Realizing close range (shorter than 10cm) automatic pair between receiver and controller(controller requires NFC wireless communication module else) |
| Cellular | 4G |
| Modem | 802.11 b/g standard |
| WIFI hot spot | Receiver broadcasts its hot spot form web UI accessing with any mobile terminals |
| WIFI datalink | Receiver can transmit and receive correction data stream via WiFi datalink |
| Storage | 4GB SSD internal storage standard, extendable up to 128GB Automatic cycle storage(The earliest data files will be removed automatically while the memory is not enough) Support external USB storage The customizable sample interval is up to 20Hz |
| Data transmission | Plug and play mode of USB data transmission Supports FTP/HTTP data download |
| Data format | Static data format:STH,Rinex2.01,Rinex3.02,etc. Differential data format:CMR,CMR+,RTCM2.1, RTCM2.3,RTCM3.0,RTCM3.1,RTCM3.2(recommended) GPS out put data format:NMEA0183,PJK plane coordinate,Binary code Network model support:VRS,FKP,MAC,Fully support NTRIP protocol |
| Electronic bubble | Controller software can display electronic bubble, checking leveling status of the carbon pole in real-time |
| IMU | Built-in IMU module, calibration-free and immue to magnetic interference |
| Thermometer | Built-in thermometer sensor, adopting intelligent temperature control technology, monitoring and adjusting the receiver temperature |
| Operating system | Linux |
| Buttons | Single button |
| Indicators | 4LED indicators |
| Web interaction | With the access of the internal web interface management via WiFi or USB connection, users are able to monitor the receiver status and change the configurations freely |
| Voice guidance | It provides status and operation voice guidance, and supports Chinese/English/Korean/Spanish/Portuguese/Russian/Turkish |
| Secondary development | Provides secondary development package, and opens the OpenSIC observation data format and interaction interface definition |
| Cloud service | The powerful cloud platform provides online services like remote manage, firmware update, online register and etc |
| Alps 2 Brochure | Download |
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