Certus Evo
Certus Evo is a ruggedized miniature GPS aided inertial navigation system and AHRS that provides accurate position, velocity, acceleration and orientation under the most demanding conditions. It combines ultra high accuracy temperature calibrated MEMS accelerometers, gyroscopes, magnetometers and a pressure sensor with a dual antenna RTK GNSS receiver. These are coupled in a sophisticated fusion algorithm to deliver accurate and reliable navigation and orientation.
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Features
MULTI CONSTELLATION RTK
Certus Evo contains a dual frequency RTK GNSS receiver that provides up to 8mm accuracy positioning and supports all of the current and future satellite navigation systems, including GPS, GLONASS, GALILEO, BeiDou and QZSS.
ADVANCED FILTER
Certus Evo contains Advanced Navigation's revolutionary sensor fusion filter. The filter is more intelligent than the typical extended kalman filter and is able to extract significantly more information from the data by making use of human inspired artificial intelligence. It was designed for control applications and has a high level of health monitoring and instability prevention to ensure stable and reliable data.
MULTI-PROTOCOLS AND INTERFACES
Certus Evo features multiple interfaces including Ethernet, CAN, RS232, RS422 and GPIOs. Certus supports all the industry standard protocols including NMEA 0183, NMEA 2000, TSS, PASHR, Simrad as well as a wide variety of proprietary protocols.
DUAL ANTENNA HEADING
Certus Evo features dual antenna moving baseline RTK. This allows it to provide highly accurate heading while both stationary and moving. It is an excellent choice for applications where magnetic heading is not usable due to interference or where additional accuracy is required. An added benefit is the ability to accurately measure vehicle slip angle.
CALIBRATED DYNAMIC RANGING SENSORS
Certus Evo contains very high performance MEMs inertial sensors. These are put through Advanced Navigation's intensive calibration process to increase their performance further still and provide consistently accurate data over an extended temperature range of -40°C to 85°C. Advanced Navigation's custom calibration process is the only full sensor calibration that can provide dynamic ranging, allowing the user to select a sensor range for high accuracy or high accelerations on the fly. As part of this calibration, every Certus Evo unit spends 8 hours in our specially built rotating temperature chamber.
RELIABILITY
Certus Evo's precision marine grade aluminium enclosure is waterproof and dirtproof to the IP67 standard and shockproof to 2000g, allowing it to be used in the most extreme conditions. A sophisticated venting system allows the unit to measure air pressure whilst keeping water out. Its minimal size, weight and power requirements allow for easy integration into almost any system. The hardware is protected from reverse polarity, overvoltage, surges, static and short circuits on all external interfaces. The GNSS contains RAIM, which excludes both malfunctioning, and tampered satellite signals.
TIME SYNCHRONISATION
Certus Evo contains a GNSS disciplined oscillator that can act as the primary time source within a distributed time system, enabling access to ultra-accurate system time using PTP or NTP network time sync. Certus Evo also has a high-accuracy 1PPS and frequency output.
EMBEDDED USER INTERFACE
Certus Evo features a rich, responsive embedded web interface that provides full access to all of the device's internal functions and data.
INTERNAL DATA LOGGING
Certus Evo contains 256GB internal storage, allowing the user to log up to 1 year of navigation data without a requirement for any external systems or accessories.
Applications
MARINE SURVEYING
Certus Evo is well suited for marine surveying applications, providing all the reference data required in a single unit. Its heading is more accurate than high end gyrocompasses costing ten times the price and is continuously reliable unlike GPS compass systems. It features a revolutionary tightly coupled heave filter that provides heave accuracy surpassing most FOG systems. It also supports kinematic post processing with Advanced Navigation's Kinematica post processing software for maximum accuracy results.
LAND SURVEYING
Certus Evo's high accuracy roll, pitch and heading make it well suited for surveying applications. It offers RTK (for free) which allows it to provide dramatically enhanced positioning accuracy over standard GPS with positioning accuracy of 8mm. The system supports connection of a high resolution wheel speed sensor or odometer which allows it to maintain accurate data through GPS outages and continue surveys through tunnels and other areas where GPS signals are not available. It also supports kinematic post processing with Advanced Navigation's Kinematica post processing software.
HELICOPTERS
Certus Evo is ideal for use in helicopters where high levels of magnetic interference make magnetic heading unusable. In this application, single antenna GNSS/INS systems can have issues resolving the heading due to the 3D movement and stationary hovering of the platform. Certus Evo is able to provide very high accuracy heading under all conditions whether stationary or moving and through all levels of magnetic interference.
ANTENNA TARGETING
In both stationary and moving antenna applications, Certus Evo provides a high accuracy source of roll, pitch and heading that is ideal for antenna targeting control. Its ability to provide continuously reliable data through extended GPS outages and interference means that systems can maintain very high uptimes.
MOTORSPORT
Certus Evo is an excellent tool for performance measurement in motorsport. From the velocity and orientation data, slip, oversteer and understeer can be calculated. The velocity and acceleration data can be used to calculate improvements to braking and accelerating. Position can be used to determine the deviation from the optimum track position. Certus Evo’s high vibration tolerance and dynamic range means there are no concerns about engine or road vibration. Certus Evo also supports data output to data acquisition systems such as Dewesoft products.
ROBOTICS
Certus Evo’s accurate orientation data allows for stabilization of robotic systems and its position, velocity and acceleration data can be used for robot navigation. Certus Evo’s high update rate allows it to control dynamically unstable platforms and its focus on safety and reliability provides for piece of mind.
Specifications
NAVIGATION
| Horizontal Position Accuracy | 1.2 m |
|---|---|
| Vertical Position Accuracy | 2.0 m |
| Horizontal Position Accuracy (with SBAS) | 0.5 m |
| Vertical Position Accuracy (with SBAS) | 0.8 m |
| Horizontal Position Accuracy (with RTK or Kinematica PPK) | 0.008 m |
| Vertical Position Accuracy (with RTK or Kinematica PPK) | 0.015 m |
| Velocity Accuracy | 0.007 m/s |
| Roll & Pitch Accuracy | 0.03 ° |
| Heading Accuracy (1m Antenna Separation) | 0.05 ° |
| Roll & Pitch Accuracy (Kinematica post processing) | 0.01 ° |
| Heading Accuracy (Kinematica post processing) | 0.01 ° |
| Slip Accuracy | 0.1 ° |
| Heave Accuracy (whichever is greater) | 5 % or 0.05 m |
| Range | Unlimited |
| Hot Start Time | 500 ms |
| Internal Filter Rate | 1000 Hz |
| Output Data Rate | 1000 Hz |
GNSS
| Model | Advanced Navigation Aries |
|---|---|
| Supported Navigation Systems | GPS L1, L2 GLONASS L1, L2 GALILEO E1, E5 BeiDou B1, B2 |
| Supported 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 | 0.008 m |
| Velocity Accuracy | 0.007 m/s |
| Timing Accuracy | 20 ns |
| Acceleration Limit | 5 g |
HARDWARE
| Operating Voltage | 9 to 36 V |
|---|---|
| Input Protection | ± 60 V |
| Power Consumption (Typical) | 2.64 W |
| Hot Start Battery Capacity | > 48 hrs |
| Hot Start Battery Charge Time | 30 mins |
| Hot Start Battery Endurance | > 10 years |
| Operating Temperature | -40 °C to 85 °C |
| Environmental Protection | IP67 MIL-STD-810G |
| MTBF | 140,000 hrs |
| Shock Limit | 2000 g |
| Vibration Limit | 8 g |
| Dimensions (Enclosed) | 78 x 115 x 44 mm |
| Weight (Enclosed) | 300 grams |
COMMUNICATION
| Interfaces | Ethernet RS232/RS422 CAN |
|---|---|
| Speed | 100Mbit 4800 to 4M baud serial |
| Protocol | AN Packet Protocol or NMEA |
| Peripheral Interface | 2x GPIO 1x Auxiliary RS232 |
| GPIO Level | 5 - 20 V |
| GPIO Functions | 1PPS Input Sensor sync input Sensor sync output Odometer Stationary Air Data Input NMEA input/output Novatel GNSS input Trimble GNSS input AN Packet Protocol CAN / CANopen |
SENSORS
| SENSOR | ACCELEROMETERS | GYROSCOPES | MAGNETOMETERS |
|---|---|---|---|
| Range | ± 10 g | ± 475 °/s | ± 8 G |
| Bias Instability | 8 ug | 0.2 °/hr | - |
| Initial Bias | < 1 mg | < 8 °/hr | - |
| Initial Scaling Error | < 0.03 % | < 0.02 % | < 0.07 % |
| Scale Factor Stability | < 0.04 % | < 0.03 % | < 0.09 % |
| Non-linearity | < 0.05 % | < 0.03 % | < 0.08 % |
| Cross-axis Alignment Error | < 0.05 ° | < 0.05 ° | < 0.05 % |
| Noise Density | 12 ug/√Hz | 7 °/hr/√Hz | 210 uG/√Hz |
| Bandwidth | 290 Hz | 200 Hz | 110 Hz |
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