Description
FIXED POSITION VISION-RTK 2 - A UNIQUE SOLUTION
Thanks to the proprietary Deep Sensor Fusion technology, a reliable and exact real time positioning is no longer reserved for a few. Fixed Position's Vision RTK 2 is a user-friendly, highly accurate position sensor that enables autonomous navigation systems to operate in a variety of challenging environments, be it in road canyons, underpasses, under tree tops or where conventional GNSS positioning systems fail anywhere. With Vision RTK 2 you can venture into exciting new areas.
There are many challenges to positioning precisely
From driverless shuttles to agricultural and city robots, we enter the age of autonomous machines. You all have a common challenge: You need to know exactly where you are, inside or outside, in the city or under a tree crown.
Sensor fusion
All available sensor data such as GNSS observations, camera images and IMU measurements are fed into the Fixed Position sensor fusion engine. Additional inputs such as wheel speed information can also be added to improve sensor performance in areas with poor GNSS connectivity. The fusion module takes advantage of the strengths of several independent sensor technologies and compensates for each individual's weaknesses in order to provide an optimal position estimate.
Visual odometry
Extract important points (visual characteristics) from camera images and track them across multiple images. The subsequent observation of visual characteristics allows the calculation of how the camera moves between acquired images.
RTK Global Navigation Satellite System
Two dual frequency receivers use satellite signals from all four GNSS systems (GPS, GLONASS, Beidou and Galileo) to determine the absolute position and orientation of the sensor. Common errors in current GNSS systems require correction to achieve the required level of high accuracy. RTK technology is used to correct these errors and to achieve centimeter exact positioning. NTRIP is used to provide calibration data to the sensor. This data can be obtained from publicly accessible networks of virtual reference stations (VRS) or local base stations.
Difference in fixed position starter set & IP sensor unit
In the starter kit of the Swiss company Fixposition AG, you will find all the components that are necessary in the beginning, such as GPS antennas, cable set, battery and charger. The IP sensor unit, on the other hand, is the heart of the system and can be used if the remaining peripherals are already available.
Technical data
Software - Sensor fusion system performance
Max. Output rate 200 Hz
Horizontal and vertical positioning accuracy (RTK Fix only): 1.0 cm + 1 ppm
Course angle accuracy: 0.4° (1 m baseline)
Speed accuracy 0.05 m/s
Max. Speed: 22 m/s for sensor fusion (500 m/s for GNSS only)
Position error as a percentage of distance traveled (in case of GNSS failures*): 0.75%
Recording time: Cold start 25 seconds
Communication and configuration
Operating modes: Vehicle, hand device, lawn mower, floor robot
Communication and configuration
Data formats: NMEA, ROS, fixed position Custom Message, and others
RTK correction data inputs: RTCM 3.3 via UART or NTRIP
Wheel odometer data inputs: CAN, UART
Hardware - Integrated features
Two RTK receivers: Supported GNSS Constellations: GPS/QZSS (L1C/A, L2C) Galileo (E1B/C, E5b) Beidou (B1I, B2I) GLONASS (L1OF, L2OF)
Camera: CMOS with Global Shutter, 120° DFOV
IMU: Accelerometer, gyroscope, barometer
Internal memory 16GB Flash memory
Interface
Cable-bound in/outputs 2 × UART, CAN, Ethernet, USB-C
Wi-Fi 802.11 ac/a/b/g/n
GNSS antenna connector 2x SMA
Camera inputs 2 × MIPI CSI-2
This text is machine translated.
