EMCORE GEO-FOG 3D INS (Non-ITAR)
With a data rate 10x faster than competing systems, EMCORE's advanced GEO-FOG 3D INS includes three EMCORE ultra-reliable PIC enhanced gyroscopes integrated with three low-noise, high-grade 16g accelerometers, three axes of magnetometers, a pressure sensor, and the option of either a single or dual antenna GNSS receiver.
Description
Overview
The non-ITAR GEO-FOG 3D INS from EMCORE uses sensor fusion to deliver reliable, high-accuracy navigation and control to a wide variety of unmanned, autonomous, and manned aerial, ground, marine, and subsurface marine applications, and platforms. EMCORE’s exclusive photonic integrated chip (PIC) technology improves reliability and repeatability.
The GEO-FOG 3D is built upon the company’s landmark high-performance FOG-based P-1750 IMU. The advanced unit contains three EMCORE photonic gyros integrated with three low-noise, high-grade MEMS accelerometers. The GEO-FOG 3D INS integrates the P-1750 IMU with a pressure sensor, a three-axis magnetometer, and a RTK GNSS receiver.
Designed for demanding navigation and control applications, the GEO-FOG 3D INS has performance monitoring and instability protections to ensure stable and reliable data. Utilizing an innovative sensor fusion algorithm, its high performance filter is more intelligent than the typical Kalman filter used in many inertial solutions. The GEO-FOG 3D is capable of extracting significantly more information from the 1750 IMU core processor by using a cutting-edge artificial intelligence algorithm.
The rugged EMCORE GEO-FOG 3D is designed and tested to ensure that the hardware is both secure 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. The system also contains a backup MEMS IMU providing seamless inertial data collection for redundancy and backup purposes.
The GEO-FOG 3D INS contains a triple frequency GNSS receiver providing 8 mm positioning accuracy. It supports all of the current and future satellite navigation systems including GPS, GLONASS, Galileo, and BeiDou. It also offers data rates up to 1000 Hz, and data can be output over a high-speed RS-422 interface.
In addition to providing GNSS positioning backed with highly accurate inertial data, the GEO-FOG 3D features a north-seeking algorithm. This provides accurate heading as fast as 10 seconds after power-on from a hot start, and 10 minutes from a cold start. The north-seeking algorithm runs continuously while the INS is operating, and is unaffected by velocity or angular motion. This means the GEO-FOG 3D provides high accuracy heading in environments in which magnetometers and GPS-heading cannot be used.
Features
- Enhanced reliability with PIC technology
- Non-ITAR
- Core processor: EMCORE P-1750 IMU
- 6 DoF IMU consisting of integrated FOGs and accelerometers
- Triple frequency Trimble® 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)
Applications
- 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: | Trimble BD940 |
| Optional Navigation Systems: | GPS L1, L2, L5; GLONASS L1, L2; Galileo E1; BeiDou B1, B2 |
| Optional SBAS Systems: | WAAS, EGNOS, MSAS, GAGAN, QZSS |
| Update Rate: | 20 Hz |
| Hot Start First Fix: | 3 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): | 0.008 m |
| Velocity Accuracy: | 0.007 m/s |
| Timing Accuracy: | 20 ns |
| Acceleration Limit: | 11 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: | 0.007 m/s |
| Roll & Pitch Accuracy: | 0.01° |
| Heading Accuracy: | 0.05° |
| 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): | ≤1.5°/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): | ±16 g |
| Bias Instability (constant temp): | 24 μg, 1σ |
| Scale Factor Temperature Sensitivity: | ≤120 ppm/°C, 1σ (typical) |
| Velocity Random Walk (25°C): | 54 μg/√Hz |
| 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 |
| 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: | 90 mm x 90 mm x 88 mm |
| Weight: | 655 grams |
| Operating Voltage: | 9 to 36 V |
| Input Protection: | -40 to 100 V |
| Power Consumption: | 550 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 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.
