EMCORE GEO-FOG 3D Dual INS (Non-ITAR)
The precision non-ITAR GEO-FOG 3D Dual INS features two GNSS antennas on a fixed PTK baseline to offer increased heading, pitch, and roll accuracy for static and dynamic applications where a single antenna system can be problematic.
Description
Overview
The GEO-FOG 3D Dual INS from EMCORE is built upon the company’s landmark high-performance FOG-based inertial measurement unit, the TAC-450-340 IMU. The TAC-450-340 IMU contains three EMCORE high-grade gyroscopes enhanced with EMCORE’s exclusive photonic integrated chip (PIC) technology for improved reliability and repeatability. The GEO-FOG 3D Dual also features three high-performance, low-noise MEMS accelerometers.
The GEO-FOG 3D Dual INS integrates the TAC-450-340 IMU with a pressure sensor, a three axis magnetometer, and a dual antenna RTK GNSS receiver. The advanced system uses sensor fusion to deliver reliable, high accuracy navigation and control to a wide variety of autonomous, unmanned, and manned aerial, ground, marine, and subsurface marine applications, and platforms.
The high performance GEO-FOG 3D Dual filter is more intelligent than the typical Kalman filter used in many inertial solutions, because it is capable of extracting significantly more information from the IMU core processor by using a cutting-edge artificial intelligence algorithm. Designed for demanding navigation and control applications, the GEO-FOG 3D Dual has performance monitoring and instability protections to ensure stable and reliable data.
The rugged GEO-FOG 3D Dual INS is designed and tested to ensure that the hardware is both protected and reliable. It is protected from reverse polarity, overvoltage, surges, static and short circuits on all external surfaces. The embedded GNSS includes Receiver Autonomous Integrity Monitoring (RAIM) to assess the integrity of satellite signals. It also contains a backup MEMS IMU providing seamless inertial data collection for redundancy and backup purposes.
The GEO-FOG 3D Dual contains a dual frequency GNSS receiver providing up to 8 mm positioning accuracy. It also supports all of the current and future satellite navigation systems including GPS, GLONASS, GALILEO, and BeiDou. The GEO-FOG 3D Dual offers data rates of up to 1000 Hz, and data can be output over a high-speed RS-422 interface or RS-232 interface.
In addition to providing GNSS positioning backed with highly accurate inertial data, the GEO-FOG 3D Dual INS also features a north-seeking algorithm providing accurate heading as fast as 10 seconds after power-on from a hot start, and 10 minutes from a cold start, runs continuously while the INS is operating, and is unaffected by velocity or angular motion. This means the system provides high accuracy heading in environments in which magnetometers and GPS-heading cannot be used.
Features
- EMCORE TAC-450-340 as the core processor
- PIC technology for improved reliability
- Non-ITAR
- 6 DoF IMU consisting of integrated FOGs and accelerometers
- Dual antenna for instant (turn on) and continuous (dynamic) heading
- Dual frequency embedded RTK GNSS receiver
- Cutting-edge sensor fusion algorithm delivering accurate, reliable data for navigation, orientation, and control
- North-seeking gyrocompass
- Attitude and Heading Reference System (AHRS)
APpplications
- Navigation and control
- Unmanned systems
- Autonomous systems
- Manned systems
- AHRS
- Positioning and imaging
- Georeferencing
- Land surveying
- Robotics
- Underground navigation
- Stabilization and orientation
Technical Specifications
| GNSS | |
| Model: | Aries Dual Frequency |
| Optional Navigation Systems: | GPS L1, L2; GLONASS L1, L2; Galileo E1, E5b; BeiDou B1, B2 |
| Optional SBAS Systems: | WAAS, EGNOS, MSAS, GAGAN, QZSS |
| Update Rate: | 20 Hz |
| Hot Start First Fix: | 2 s |
| Cold Start First Fix: | 30 s |
| Horizontal Position Accuracy: | 1.2 m |
| Horizontal Position Accuracy (with SBAS): | 0.5 m |
| Horizontal Position Accuracy (with RTK): | 0.01 m |
| Velocity Accuracy: | 0.005 m/s |
| Timing Accuracy: | 20 ns |
| Acceleration Limit: | 4 g |
| Navigation | |
| Horizontal Position Accuracy: | 0.8 m |
| Vertical Position Accuracy: | 1.5 m |
| Horizontal Position Accuracy (with SBAS): | 0.5 m |
| Vertical Position Accuracy (with SBAS): | 0.8 m |
| Horizontal Position Accuracy (with RTK): | 0.008 m |
| Vertical Position Accuracy (with RTK): | 0.015 m |
| Velocity Accuracy: | 0.005 m/s |
| Roll & Pitch Accuracy: | 0.01° |
| Heading Accuracy: | 0.01° |
| Heave Accuracy: | 2% or 0.02 m (whichever is greater) |
| Orientation Range: | Unlimited |
| Hot Start Time: | 2 s |
| Internal Filter Rate: | 1000 Hz |
| Output Data Rate: | Up to 1000 Hz |
| IMU | |
| Gyro Technology: | FOG |
| Input Rate (max): | ±490°/sec |
| Bias Instability (25°C): | ≤0.1°/hr, 1σ (max), ≤0.05°/hr, 1σ (typical) |
| Bias vs. Temperature (≤1°C/min): | ≤1°/hr, 1σ (max), ≤0.7°, 1σ (typical) |
| Bias Offset (25°C): | ±2°/hr |
| Scale Factor Non-linearity (full rate, 25°C): | ≤50 ppm, 1σ |
| Scale Factor vs. Temperature (≤1°C/min): | ≤200 ppm, 1σ |
| Angle Random Walk (25°C): | ≤0.012°/√hr (≤0.7°/hr/√Hz) |
| Bandwidth (-3 dB): | ≥440 Hz |
| Initialization Time (valid data): | ≤1.5 secs |
| Data Interface: | Asynchronous or Synchronous RS-422 |
| Baud Rate: | Selectable 9.6 Kbps to 921.6 Kbps |
| Data Rate: | User Selectable 1 to 1000 Hz |
| Accelerometer | |
| Accelerometer Technology: | MEMS |
| Input Limit (max): | ±10 g |
| Bias Instability (constant temp): | <0.05 mg, 1σ |
| Scale Factor Temperature Sensitivity: | 250 ppm/°C, 1σ (max), ≤100 ppm/°C, 1σ (typical) |
| Velocity Random Walk (25°C): | ≤0.12mg/√Hz (0.23 ft/sec/√hr) |
| Bandwidth (-3 dB): | ≥200 Hz |
| Magnetometers | |
| Range: | 8 G |
| Scale Factor Stability: | <0.05% |
| Non-linearity: | <0.05% |
| Noise Density: | 210 uG/√Hz |
| Bandwidth : | 110 Hz |
| Pressure | |
| Range: | 10 to 120 Kpa |
| Noise Density: | 0.56 Pa/√Hz |
| Bias Instability: | 100 Pa/yr |
| Bandwidth: | 50 Hz |
| Communications | |
| Interface: | RS-422 (RS-232 optional) |
| Protocol: | AN Packet Protocol or NMEA |
| Peripheral Interface: | 2x GPIO and 2x Auxiliary, RS-232 |
| GPIO Level: | 5 V or RS-232 |
| Physical/Electrical | |
| Dimensions: | 94 mm x 94 mm x 95 mm |
| Weight: | 740 grams |
| Operating Voltage: | 9 to 36 V |
| Input Protection: | -40 to 100 V |
| Power Consumption: | 510 mA @ 12 V (typical) |
| Hot Start Battery Capacity: | >48 hours |
| Hot Start Battery Charge Time: | 30 minutes |
| Hot Start Battery Endurance: | >10 years |
| Environmental | |
| Operating Temperature: | -40°C to +75°C |
| Environmental Protection: | IP67, MIL-STD-810G |
| Shock Limit: | 25 g |
| MTBF: | >36,000 hours |
Developer Kit
The KVH FOG/IMU Developer’s Kit includes easy-to-use software to accelerate your IMU and FOG integration, development, and interface efforts.
Why Buy from Us?
In business since 2004, Canal Geomatics is an authorized dealer for EMCORE and has established itself as an industry-leading distributor of high-precision positioning products in North America. Our mission is to find the best solution for each unique application and extend premium support to ensure the long-term success of our customers. We offer both volume and reseller discounts for the majority of our product lines.
Ordering
The GEO-FOG 3D Dual FOG-based INS from EMCORE is available through Canal Geomatics. If you would like to learn more about it, please use the Request Pricing form to get in touch with us.
