ANavS position determination systems provide a position information with centimeter-level accuracy. Our systems can be used for both static and kinematic applications, i.e. for surveying, for construction engineering, for environmental monitoring, for autonomous driving of vehicles, for navigation of ships in harbours and narrow watergates, for precise docking, for precise positioning in sports or any other application with the need of a precise position information.
Hardware configuration
ANavS sensor modules have a very small size and weight. The size of the GNSS-only modules corresponds to a match box and the size of the GNSS/ INS sensor modules corresponds to a credit card. We are using low-cost patch antennas, which also have a much smaller size and weight than conventional geodetic antennas. Our multi-sensor modules include a GNSS receiver, a GNSS antenna, an inertial sensor, a bluetooth module, and a bluetooth antenna. Thus, the system is completely wire-free except for the power connection.
We are offering the following hardware configurations for a wide range of applications:
Legend:
Static RTK-based positioning
Kinematic RTK-based positioning
Local area coverage
Global coverage|
Static RTK positioning
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Kinematic RTK positioning
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local coverage
(<100m) |
global coverage
(>100m) |
local coverage
(<100m) |
global coverage
(>100m) |
|
Sensor configuration
| GNSS sensor | ||||
| Inertial sensor | ||||
| Barometer |
Reference station type
| ANavS reference station module | ||||
| Virtual Reference Station |
Data output rate
| Moderate (5 Hz) | ||||
| High (100 Hz) |
Internet connection on processing module
| Internet connection required |
Data link sensor module ↔ processing module
| Serial (USB) connection | ||||
| Bluetooth connection |
Output interface type
| Serial (USB) | ||||
| I²C/UART/SPI | ||||
| LAN/Ethernet | ||||
| Wireless (Wi-Fi) | ||||
| Bluetooth | ||||
| Internet-based |
GPS antenna integration
| On-board antenna | ||||
| External antenna |
Power supply of sensor module
| Internal battery-powered | ||||
| External power source (USB) | ||||
| Extended power level (3 V – 24 V) |
Precise position determination software
ANavS RTK software provides a centimeter-level positioning accuracy. We perform a tightly coupled sensor fusion with an extended Kalman filter and resolve the carrier phase integer ambiguities.
Our software is based on ANavS patented algorithms for receiver synchronization, reliable ambiguity resolution, cycle slip correction, precise carrier phase positioning and tight coupling. We also estimate the code multipath for each satellite to obtain an accurate position information also with low-cost patch antennas. Our efficient Kalman filter implementation has only very low memory and processing power requirements.