SMART7 performance specifications
All specifications subject to GNSS system characteristics.
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Accuracy |
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Horizontal position accuracy1 |
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RMS |
95% |
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Single point L1/L2 |
1.2 m |
2.4 m |
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SBAS2 |
0.6 m |
1.2 m |
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DGPS |
0.4 m |
0.8 m |
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TerraStar‑L3 |
40 cm |
50 cm |
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TerraStar-C PRO3 |
2.0 cm |
2.5 cm |
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TerraStar-X3 |
2.0 cm |
2.5 cm |
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RTK |
1 cm + 1 ppm |
2.5 cm + 1 ppm |
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Pass to pass accuracy1 |
|
RMS |
95% |
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Single Point L1/L2 GLIDE4 |
– |
35 cm |
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TerraStar-L3 |
– |
15 cm |
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TerraStar-C PRO3 |
– |
2.0 cm |
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RTK |
1 cm + 1 ppm |
2.5 cm + 1 ppm |
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Measurement precision (RMS)5 |
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Code |
Carrier |
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GPS |
L1 C/A |
4 cm |
0.5 mm |
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L2 P(Y) |
8 cm |
1.0 mm |
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L2C |
8 cm |
1.0 mm |
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GLONASS |
L1 C/A |
15 cm |
1.5 mm |
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L2 P |
8 cm |
1.5 mm |
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L2 C/A |
8 cm |
1.5 mm |
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Galileo |
E1 |
3 cm |
0.5 mm |
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E5a |
3 cm |
0.75 mm |
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E5b |
3 cm |
0.75 mm |
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E5 AltBoc |
3 cm |
0.75 mm |
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BeiDou |
B1I |
4 cm |
0.5 mm |
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B1C |
3 cm |
0.5 mm |
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B2I |
4 cm |
0.5 mm |
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B2a |
3 cm |
0.5 mm |
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B2b6 |
3 cm |
0.5 mm |
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Time accuracy7 |
20 ns RMS |
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Velocity accuracy8 |
<0.03 m/s RMS |
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Signals |
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Signals tracked |
GPS |
L1 C/A, L2P, L2C |
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GPS (optional) |
L1C, L5 |
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GLONASS |
L1 C/A, L2 C/A, L2P |
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GLONASS (optional) |
L3 CDMA |
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BeiDou (optional) |
B1I, B1C, B2I, B2a, B2b |
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Galileo (optional) |
E1, E5 AltBOC, E5a, E5b |
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QZSS |
L1 C/A, L2C |
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QZSS (optional) |
L1C, L5 |
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SBAS |
L1 |
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SBAS (optional) |
L5 |
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L-Band |
Up to 5 channels9 |
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Signal reacquisition |
L1 |
0.5 s typical |
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L2 |
<1.0 s typical |
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Time to First Fix |
Hot: <20 s typical (Almanac and recent ephemeris saved and approximate position and time entered) Cold: <34 s typical (No almanac or ephemeris and no approximate position or time) |
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Data |
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Maximum data rate
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Measurements |
up to 20 Hz |
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Position |
up to 20 Hz |
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The IMU performance specifications apply to the SMART7-S and SMART7-SI only.
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Gyroscope performance |
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Technology |
MEMS |
|
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Dynamic range |
150 °/second |
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Bias instability |
3.5 °/hour |
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Angular random walk |
0.1 °/√hour |
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Accelerometer performance |
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Technology |
MEMS |
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Dynamic range |
5 g |
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Bias instability |
0.1 mg |
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Velocity random walk |
0.05 m/s/√hour |
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Attitude accuracy |
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|
RMS |
95% |
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Roll |
0.03 |
0.06 |
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Pitch |
0.03 |
0.06 |
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Heading |
0.1 |
0.5 |
The bias instability, angular random walk and velocity random walk specifications are from room temperature Allan variance method.