ViaNav product family consists of different systems, all based on similar technology. Each product has been produced to serve different functions with different accuracy requirements.
VIA-100 series includes different products with different functionality. VIA-100 line is composed of following products:
VIA-100I, is an Inertial Measurement Unit with 3D accelerometers, 3D gyroscopes and Magnetometer.
VIA-100A, is a 3 DOF Attitude Heading Reference System (AHRS) which provides driftless real-time orientation information over the full 360 degrees of angular motion on all three axes. It includes 3D accelerometers, 3D gyroscopes and 3D magnetometers.
VIA-100A+, is a 3 DOF AHRS which provides driftless real-time orientation information. VIA-100A+ includes a multi-IMU configuration and employs an optimum filter to lower IMU noise level. VIA-100A+ provides 3D orientation with improved accuracy and reliability.
VIA-100G, includes a VIA-100A, a GPS and a barometric altimeter with an advanced Kalman filtering algorithm providing accurate 3D position, velocity and attitude. VIA-100G is a state of the art GPS/IMU system.
| PRODUCTS:
|
VIA-100I IMU |
VIA-100A AHRS |
VIA-100A+ Redundant AHRS |
VIA-100G GPS / INS |
| Gyro. Noise | 0.01°/s/√Hz | 0.01°/s/√Hz | <0.008°/s/√Hz | 0.01°/s/√Hz |
| Acc. Noise | 100 μg/√Hz | 100 μg/√Hz | 70 μg/√Hz | 100 μg/√Hz |
| Roll/Pitch | - | 0.25° | 0.15° | 0. 2° |
| Heading | - | 1° | 1° | 1° |
| Horizontal Position | - | - | - | 3m |
| Vertical Position | - | - | - | 2m |
| Velocity | - | - | - | 0.1 m/s |
| Aiding | - | - | Multi-IMU configuration | GPS/baro/mag. aided system |
| SENSOR SPECIFICATIONS | ||
| Inertial Sensors | Gyroscope | Accelerometer |
| Types | MEMS capacitive readout | MEMS capacitive readout |
| Measurement range | ±450°/s | ±5g/±18g (optional) |
| Bias repeatibility | 0.2°/s | 4mg |
| Bias in-run stability | 12°/hr | 40μg |
| Noise density | 0.01°/s/√Hz | 100 μg/√Hz |
| Nonlinearity | <0.01%FS | <0.03%FS |
| Alignment error (RMS) | 1mrad | 1mrad |
| g-sensitivity (RMS) | 0.003°/s/g | N/A |
| Bandwidth (-3 dB) | 333 Hz | 338 Hz |
| Magnetometer | ||
| Type | Anisotropic Magnetoresistive | |
| Measurement range | ±6gauss | |
| Non-linearity | <0.1%FS | |
| Orthogonality (RMS) | <0.1 deg | |
| Barometer | ||
| Type | MEMS piezoresistive | |
| Measurement range | 300-1100hPa | |
| Noise | 0.03hPa (rms) | |
| GPS receiver (VIA-100G) | ||
| Type | 50 Channels GPS L1 frequency, C/A Code SBAS: WAAS, EGNOS, MSAS |
|
| Cold start | 26 s | |
| Update rate | Up to 5 Hz | |
| Tracking sensitivity | –162 dBm | |
| Position | 2.5 m (2 m with SBAS) | |
| Velocity | 0.1 m/s | |
VIA-100G series is a part of inertial navigation systems produced by KAREL Electronics Corporation. The VIA-100G is an integrated GPS and MEMS-IMU (Inertial Measurement System) system with a high accurate fusion filter running on an embedded processor. System contains 3D gyroscopes, 3D accelerometers, GPS, magnetometer, static pressure sensor and temperature sensors in a compact and rugged enclosure. The embedded processor provides driftless and real-time navigation information over a wide range of temperature in dynamic and static conditions.