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Indoor Positioning System IPS

Accurate position detection without GNSS* in cooperation with Racelogic: with the IPS (Indoor Positioning System), driving tests and crash tests with new sensor systems and safety functions can be tested in indoor facilities under constant ambient conditions.

IPS works by utilising a network of stand-alone, battery powered beacons which communicate using ultrawideband (UWB). The beacons are placed around the perimeter of the operation area (eg floor plan of building or construction site), in known positions which have been manually surveyed using a handheld laser, Total Station or, if time is of the essence, a self-survey can also be performed. The accuracy of the known beacon positions directly corelates to the accuracy of the output measurement, allowing for flexibility in required accuracy verses set up time. The beacons are completely stand-alone, and the option of battery power makes deployment very rapid. A UWB receiver on the target object communicates with the beacons and uses trilateration to determine its position.

A hardware interface for the GeneSys ADMA has been specifically developed and allows an interoperability with the IPS system. This way, the standardized ADMA position data output are equivalent to the ones, when operating the ADMA with GNSS in RTK2 mode.

Indoor Testing
All Images by Racelogic. Seen here: IPS Rover from Racelogic
Indoor Positioning System (IPS) - System Presentation
Watch this video on YouTube.
Indoor Positioning System (IPS) - Two Rovers Performance Presentation
Watch this video on YouTube.
Indoor Positioning System (IPS) - Performance Presentation
Watch this video on YouTube.

Key Features

  • Centimetre-level positional accuracy without GNSS*
  • Real-time 3D position and attitude measurement up to 1kHz
  • Compatible with existing ADMA systems**
  • Data latency <1msec
  • Works simultaneously with up to 5 vehicles
  • Compatible with all major steering robot systems
  • Portable and easy to install with no requirement for any complex set-up routines

*Time Sync via GNSS
**depending on the hardware version

Applications

  • ADAS and vehicle dynamics test in specific environment
  • Validation of predictive vehicle safety functions with e.g. Camera, Radar, Lidar sensors
  • Crash tests with complete vehicle and components
  • Tire tests
  • Continuous crash tests (with pre-crash phase)
  • Comprehensive vehicle safety functions with connected sensor systems and V2X
  • Vehicle dynamics, Adaptive Forward Lightning (AFL), System development and validation

Technical Data

Up to 250 beacons can be installed on one site. They can either be surveyed using a handheld laser or Total Station for positional accuracy better than 2cm, or a self-survey can be carried out for positional accuracy between 5 cm to 10 cm. The beacons are completely stand-alone and can be battery powered, making the deployment very rapid.

Complete system (VIPS with ADMA)
Update rateUp to 1000 Hz
Position accuracy0,02 m RMS ***
Velocity accuracy0,09 km/h RMS ***
Angle measurement accuracyUp to 0,2° ***
***Measured with ADMA-G-Pro+ compared to ADMA-G-Pro+ RTK2. The antennas are 2 m above the ground with unobstructed line of sight. Depending on ambient conditions; reflection on wall and objects influence measurement performance..
VIPS Rover & Beacon
Operating temperature-30°C to +60°C
IP RatingIP 67
Size per beacon124 mm diameter, 74.5 mm height
Weight per beacon350 g
Beacon power requirement6.5 – 30 V DC, 100 mA
Communication with ADMARS232
Minimum distance between beacons25 m to 50 m
Centre frequency3993.6 MHz / 6489.6 MHz
Bandwidth1331.2 MHz / 1081.6 MHz
Transmit power-41.3 dBm/MHz
Number of beaconsMin 8 (position and velocity) / Max 250
Number of roverMax 5
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