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SuomiNet - GPS Receiver
Note - content is provided for historical continuity and may be out of date. The UNAVCO SuomiNet pages are not actively maintained, and up-to-date SuomiNet information should be obtained from UCAR’s COSMIC program at: www.cosmic.ucar.edu/suominet.html
The SuomiNet Steering Committee has selected the Trimble 4700 GPS receiver.
GPS Receiver Specifications
| Standard Features | |
|---|---|
|
Internal memory BINEX data streaming firmware version - 1.37 |
|
| Technical Specifications | |
| Physical | |
| Size: | 11.9 cm (4.7") W x 6.6 cm (2.6") H x 20.8 cm (8.2") L |
| Receiver Weight: | 1.2 kg (2.7 lbs) |
| Electrical | |
| Receiving Power: |
4.5 Watts receiver only 10.5 to 24 VDC |
| Environmental | |
| Operating Temp: | -40°C to +65°C (-40°F to +149°F) |
| Storage Temp: | -40°C to +75°C (-40°F to +167°F) |
| Humidity: | 100%, fully sealed. Buoyant |
| Shock: | 1 m (3 ft) accidental drop onto concrete |
| Performance Specifications | |
| Static survey performance | |
| Fastest datalogging rate: | 5 Hz |
| General Performance | |
| Start Up: | <30 seconds from power-on to start survey with recent ephemeris |
| Tracking: |
L1 C/A code, L1/L2 full-cycle carrier. Fully operational during P-code encryption |
| Number of Channels: | 24 |
| Datalogging: | In internal memory |
| Receiver Data Storage: | 120 hours internal memory of L1/L2 data, 6 satellites, 15 sec. interval |
GPS Receiver Limitations
Please note that the 4700 receiver is specifically configured for SuomiNet applications, and does not behave like the standard Trimble 4700 commercial receiver. Some important limitations:
Receiver is NOT compatible with a controller or data collector.
The receiver firmware streams BINEX data.
Rover functions, including kinematic mode and RTK rover, are disabled.
Remote download utilities are NOT supported by UNAVCO or Trimble.
The antenna groundplane is NOT removable.
Ancillary equipment is limited to an AC power supply, 2 power/download cables, a groundplane antenna, a 30m antenna cable, and a receiver manual.