VN-310 DUAL GNSS/INS
Manufacturer: VectorNav Technologies
Description:
The VN-310 is a tactical-grade, high-performance Dual Antenna GNSS-Aided Inertial Navigation System. Incorporating the latest inertial sensor and GNSS technology, the VN-310 combines 3-axis accelerometers, 3-axis gyros, 3-axis magnetometers and two Multi-band L1/L2/E1/ E5b GNSS receivers into a compact embedded module or ruggedized packaging option to deliver a high-accuracy position, velocity and attitude solution under both static and dynamic conditions.
Features:
- GNSS-Compass for Static Heading: Two onboard GNSS receivers perform GNSS- Compassing, providing highly accurate heading estimates under static and low dynamic conditions.
- Automatic Heading Transition: Automatic and seamless transition between magnetic heading, INS operation in dynamics, and GNSS-Compass in static conditions.
- True Inertial Navigation System: No mounting orientation restrictions or configuration modes; Automatic filter initialization and dynamic alignment.
- Software Compatibility: The VN-310 and VN- 310E share a common communication protocol with the entire VectorNav product line.
- Ease of Availibility: ITAR-free and Made in the USA; short lead times.
- User Configurable Messages: ASCII and VectorNav Binary messages.
Performance Specifications:
ATTITUDE
POSITION/VELOCITY
- Range (Heading/Yaw, Roll): 180°
- Range (Pitch): ± 90°
- Heading (Magnetic)2: 2.0° RMS
- Heading (INS)3,4: 0.05° to 0.1°, 1σ
-
Heading (GNSS-Compass)5:
0.5 m Baseline: 0.3° to 0.6° RMS
1.0 m Baseline: 0.15° to 0.3° RMS
2.0 m Baseline: 0.08° to 0.15° RMS - Pitch/Roll (Static): 0.05° RMS
- Pitch/Roll (INS)4: 0.015°, 1σ
- Heading Mounting Misalignment (VN-310)6: 0.05°, 1σ
- Heading Mounting Misalignment (VN-310E)6: 0.15°, 1σ
- Pitch/Roll Mounting Misalignment6: 0.05°, 1σ
- Angular Resolution: 0.001°
POSITION/VELOCITY
- Horizontal Position Accuracy5: 1.0 m RMS
- Vertical Position Accuracy5: 1.5 m RMS
- RTK Position Accuracy7: 0.01 m + 1 ppm CEP
- Free Inertial Position Drift8: 0.5 cm/s²
- Velocity Accuracy: < 0.02 m/s
IMU Specifications
| ACCELEROMETER | GYROSCOPE | MAGNETOMETER | |
| Range9 | ±15 g | ±490°/s | ±2.5 Gauss |
| In-Run Bias Stability (Allan Variance) | < 10 μg | < 1°/hr (0.4-0.7°/hr typ.) | - |
| Noise Density | < 0.04 mg/√Hz | 5 °/hr /√Hz | 140 µGauss/√Hz |
| Bandwidth | 240 Hz | 240 Hz | 200 Hz |
| Cross-Axis Sensitivity | ±0.05 ° | < 0.05 ° | ±0.05 ° |
1. Contact VectorNav for ARINC 429 option.
2. With proper magnetic declination, suitable magnetic environment and valid hard/soft iron calibration.
3. Dependant on a number of factors, contact VectorNav to discuss expected performance in your application.
4. With sufficient motion for dynamic alignment.
5. Dependant on SBAS, clear view of GNSS satellites, good multipath environment, compatible GNSS antenna, and measurement duration period.
6. Constant on a per part basis. Can be calibrated out during system integration using boresighting or other alignment processes.
7. Dependant on atmospheric conditions, baseline length, GNSS antenna, multipath conditions, satellite visibility and geometry.
8. Typical rate of growth in error of position estimates after loss of GNSS signal, provided INS full alignment prior to loss.
9. Contact VectorNav for Extended Range Gyro Option.
