Tactical Grade High-Accuracy GNSS Inertial Navigation System for Vessel Tracking
Product Description
Main functions of the integrated navigation system are as follows:
Main Parameters
Gyro technology
| Project | Indicators | Remark | |
Gyro |
Measuring range | -300°/s ~+300°/s | |
| Resolution | ≤0.5°/h | ||
| Bias residual | -1.0°/h ~+1.0°/h | ||
| Random walk | 0.05 o / h | ||
| Biasstability at room temperature | ≤0.3°/h(1σ) | 10 seconds smoothing, 1H test result | |
| Biasstability at full temperature | ≤0.5°/h(1σ) | 10 seconds smoothing, 1H test result | |
| Normal-temperature Biasrepeatability | ≤0.3°/h(1σ) | Statistics of 6 test data | |
| Biasrepeatability at full temperature | ≤0.5°/h(1σ) | Take 2 Biasdata at full temperature, high temperature, low temperature and normal temperature respectively | |
| Scale factor nonlinearity | ≤200ppm | Full temperature and constant temperature | |
| Scale factor repeatability | ≤200ppm(1σ) | Full temperature and constant temperature | |
| Gyro start time | ≤5s | ||
| Gyro bandwidth | 300Hz | Design assurance, batch testing | |
| Installation error residual of three-axis gyroscope | ≤30" | ||
Accelerometer technical indicators
| Project | Indicators | Remark | |
Acceleration |
Measuring range | -50g ~ +50g | Design and selection guarantee |
| Scale factor nonlinearity | ≤200ppm | Design and selection guarantee | |
| Biasstability at full temperature | ≤100ug(1σ) | 10 seconds smoothing, 1H test result | |
| Biasrepeatability at full temperature | ≤100ug(1σ) | Take 2 Biasdata at full temperature, high temperature, low temperature and normal temperature respectively | |
| Scale factor repeatability | ≤100ppm(1σ) | Design and selection guarantee | |
| Random walk | ≤0.02m/s/h1/2 | ||
| Add up the starting time | ≤5s | ||
| Triaxial addition installation error residual | ≤30" | ||
Alignment accuracy
Integrated navigation accuracy (satellite effective)
| Project | Indicators | Remark | |
Alignment accuracy |
North seeking time | ≤5min | Generally, the standard is 3min or 5min. |
| Heading Angle Alignment Repeatability | ≤1°/cosL | 1σ | |
| Pitch Alignment Repeatability | ≤0.05° | 1σ | |
| Roll Angle Alignment Repeatability | ≤0.05° | 1σ | |
| North-seeking mode | Optional | It can realize swaying base alignment, GPS auxiliary alignment during travel, odometer auxiliary alignment during travel and main inertial navigation transfer alignment. | |
Inertial navigation accuracy (invalid satellite)
| Project | Indicators | Remark | |
Inertial navigation accuracy |
Accuracy of course angle maintenance | ≤2°/h | |
| Pitch Angle Holding Accuracy | ≤0.2°/h | ||
| Accuracy of roll angle maintenance | ≤0.2°/h | ||
| Pure inertial positioning accuracy | ≤20m(100s) | CEP, without external information assistance | |
| Position positioning accuracy of odometer integrated navigation | ≤ 0.2% (mileage greater than 3 km) | ||
| Position positioning accuracy of odometer integrated navigation | ≤1m(50s) | ||
Size
Main Application Fields
