VN-310 Dual Antenna GNSS/INS
VN-310 Dual Antenna GNSS/INS, by VectorNav Technologies, is tactical grade and incorporates the latest MEMS sensor and GNSS technology.
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- Description
- Specifications
Description
VN-310 Dual Antenna GNSS/INS VectorNav introduces the Tactical Series, a next-generation, MEMS inertial navigation platform that features high-performance IMU, AHRS, GPS/INS and GPS-Compass solutions.
Featuring a tactical-grade IMU core housed in a robust and compact aluminum enclosure, the Tactical Series leverages VectorNav’s industry leading navigation algorithms to offer a new class of inertial navigation solutions.
Key Benefits
- 0.3 degree GPS-Compass Heading
- <0.1 degree Dynamic Heading
- <0.03 degree Dynamic Pitch/Roll
- < 1 ̊/hr Gyroscope In-Run Bias
- +/-15 g Accelerometer Range
- +/-490 deg/sec Gyroscope Range
- 800 Hz IMU Data, 400 Hz Navigation Data
- Power: <2.5 W
- IP-68, DO-160G, MIL-STD-1275E
- Made in the USA
- ITAR-Free
Download Data Sheet
Ruggedized Packaging
The VN-310 features a precision milled, anodized aluminum enclosure designed to meet DO-160G standards. With dual I/O connectors, the VN-310 offers maximum flexibility for interfacing with external GNSS receivers and IMUs. The VN-310 has an input voltage of +12 to +36 VDC power supply over an RS-422 interface.
- Size: 56 x 56 x 31 mm
- Power Consumption: < 2.5 watts
- Weight: 200 g
Enclosed in precision anodized aluminum enclosure, the VN-310 offers additional protection of the internal MEMs sensors and electronics. The use of precision CNC milled aluminum parts ensures that the axis alignment provided by our factory calibration process is maintained during installation in its final configuration. Interfacing with the module is made through circular push-pull 10-pin connectors.
Dual GNSS-Compassing Algorithm
The VN-310 provides the ability to accurately estimate true heading (azimuth with respect to True North) in both static as well as dynamic conditions without any reliance on magnetic sensors.
This is accomplished by utilizing GPS interferometry techniques, which measure the heading of the vehicle or platform without any assumptions regarding the vehicle dynamics (RTK moving baseline technique). This is a crucial feature for applications that require an accurate heading at startup, or in situations where insufficient motion is present to perform dynamic alignment.
Key features of VectorNav’s GNSS-Compass algorithms, include:
- Magnetic independent
- Automatic transition between AHRS, INS and GNSS-Compass
- Adjustable GNSS antenna baseline lengths for shorter start-up times or increased
heading accuracy - Heading accuracy between 0.15° and 1.2° (RMS)
- Start-up in under 2 minutes
- Raw pseudorange, Doppler & carrier phase outputs
Extended Inertial Sensor Thermal Calibration
MEMS inertial sensors are subject to several common sources of error: bias, scale factor, misalignments, temperature dependencies, and gyro g-sensitivity. To ensure the highest level of accuracy, each VN-310 sensor undergoes a rigorous calibration process to minimize these error sources. Compensation parameters calculated during these calibrations are stored on each individual sensor and digitally applied to the real-time measurements. This calibration process is performed over the full thermal operating range of the VN-310 (-40C to +85C).
GNSS/INS Kalman Filter
The VN-310 incorporates the latest advancements in aerospace-grade Extended Kalman Filter (EKF) inertial navigation algorithms specifically tailored to solve problems typically faced by industrial users. The VN-310 utilizes the onboard EKF to optimally combine high bandwidth GNSS measurements to provide high-accuracy, low latency position, velocity, and attitude measurements.
Key features of VectorNav’s INS algorithms include:
- Automatic filter initialization & dynamic alignment
- Real-time gyro & accel bias tracking & compensation
- GPS delay compensation
- Synchronized to GPS time
- Automatic transitioning between AHRS & INS modes
- Operates as a True Inertial Navigation System – no mounting restrictions or velocity
alignment assumptions
Tactical-Grade MEMS IMU
Utilizing the latest advancement in Microelectromechanical systems (MEMS) technology, the VN-310 incorporates a suite of tactical-grade inertial sensors, including 3-axis accelerometer, 3-axis gyroscope and 3-axis magnetometer. The VN-310 has been designed to achieve the highest performance possible by filtering out common error sources, such as sensitivity to supply voltage variations and temperature dependent hysteresis.
- < 1 °/hr in-run gyro stability
- < 10 µg in-run accel bias stability
- Ultra low noise accel and gyro
(0.04 mg/√Hz and 3.24 °/hr / √Hz) - High accel and gyro ranges
(±15 g and ±490 °/s)
High Sensitivity GNSS Receivers
The VN-310 incorporates two onboard, high-sensitivity, 72-channel, L1, GNSS receivers. Two SMA connectors are provided for connection to external active GNSS antennas.
- Receiver type: 72-channel L1 GNSS
- Update Rate: 5 Hz
- Sensitivity: -159 dBm Tracking
- Time-to-First-Fix (Cold/Warm Start): 26 s
- Time-to-First-Fix (Hot Start): <1 s
About VectorNav Technologies
VectorNav Technologies specializes in manufacturing high-performance navigation and inertial sensors using the latest MEMS inertial sensor technology. Since its founding by five graduates of Texas A&M University in 2008, VectorNav brings high performance aerospace filtering and calibration techniques into the world of low-cost industrial grade MEMS sensors, expanding the possibilities of today’s MEMS sensor technology.
| Heading (Magnetic)1 | 2.0 ° RMS |
|---|---|
| Heading (INS) | < 0.1 ° RMS |
| Heading (GPS-Compass)2 | 0.3 ° RMS |
| Pitch/Roll (Static) | < 0.05 ° RMS |
| Pitch/Roll (Dynamic) | < 0.03 ° RMS |
| Horizontal Position Accuracy | 2.5 m RMS |
| (w/ SBAS) | 2.0 m RMS |
| Vertical Position Accuracy | 2.5 m RMS |
| Velocity Accuracy | < 0.05 m/s |
| Output Rate (IMU Data) | 800 Hz |
| Output Rate (Navigation Data) | 400 Hz |
Further specifications can be found here
