RECEIVER
(For 1 DGPS set, 1 receiver as base and 1 receiver as rover)

• Geodetic GPS, Dual frequency, Real time RTK Receiver

• Constellation: at least GPS (NAVSTAR) and GLONASS. More than these are preferable.

• DGPS/ WAAS/ EGNOS enabled.

• 72 channels or more

• Measurement modes: Static, RTK

2. Accuracy

• Static: 5mm ± 0.5 ppm (Hor.) or higher accuracy

  • 10 mm + 1.0 ppm (Vert.) or higher accuracy

• Kinematic: 10 mm + 1.0 ppm (Hor.) or higher accuracy

  • 20 mm + 1.0 ppm (Vert.) or higher accuracy

3. GPS Antenna

• Dual frequency antenna supporting GPS (NAVSTAR) and GLONASS or more constellations

  • Base Station: Choke Ring (DM) Antenna

  • Rover Station: Geodetic Antenna

4. Data Logger/ Controller
External Data Logger/ Controller shall be provided with base and rover of GPS with the following features:

• Graphic screen

• Touch screen as well as alphanumeric keyboard

5. Communication and Data Storage

• Minimum of 4 GB or more external storage

• Card reader

• Devices and accessories for Radio modem, GSM/CDMA/ GPRS/CDPD

• RTK Range: 10 km or more

6. Operating System

• Windows 10, Windows 11, or Android

• Minimum of 2GB RAM

7. Power Supply

• Suitable internal batteries and spare batteries for receivers and other equipment

• Suitable battery charger with necessary accessories

• Suitable adaptors and cables for the battery

8. Environmental Specifications
(For receivers, antenna, and controller)

• Shockproof up to 1 m height or more drop onto a hard surface

• Operating temperature: sub-zero to +60°C

9. Accessories / Tripods

• All necessary data transfer, power, and antenna cables (minimum 30m for base station and 2/3m for rover) and any other accessory to make the system fully functional

• Transport cases for all accessories, minipack, belt pouch, hip pack

• Wooden telescopic tripod (Tripods mounting/ pole mounting at Rover)

• Tribrach with optical/ laser plummet and tribrach adaptor (for placing GPS Antenna over tripod and tribrach)

• Range pole for rover

• H.I. Rod/ Height hook with tape

• Any other accessory to make the system fully functional

10. Software
System shall be supplied with Windows 10, 11, or Android professional-based data processing software to perform the following tasks:

• Data downloading, Import and Export

• Visualization

• RINEX Conversion

• GPS baseline processing

• Perform network adjustments

• Data uploading up to 20 Hz

11. Conditions

• All the accessories including radio and software must be from the original manufacturer only

• Base and Rover receivers must be interchangeable

• The data from DGPS and Electronic Total Station should be compatible with each other for use with both systems

• Accuracy of angles and distances needs to be certified by the Manufacturer

• Calibration report from the supplier of the equipment shall be provided at the time of supply of the equipment

• Calibration must be made locally