Sensors (absolute measurements) for measuring distance to landmarks

Parents:  slam-hardware

Source: Cometlabs

• Acoustic
  • (Time of Flight) ToF technique
  • Surfaces need to have good acoustic reflection
  • Lack the ability to use surface properties for localisation
  • examples
    • Sonar
    • Ultrasonic, ultrasound
• Laser rangerfinders
  • ToF and phase-shift techniques
  • Lack the ability to use surface properties for localisation
  • e.g. Lidar
• Visual sensors for localisation

Source: SLAM for Dummies

• Laser scanners
• Sonar, usually polaroid sonar
  • [+] cheaper, good for underwater (s. dolphins)
  • [-] less precise
• Visual sensors for localisation

Source: Wikipedia Lokalisierung

• GPS (only for outdoors)
• Innenraumsensorik
  • Lidar, Ultra Wide Band (UWB), Wireless Fidelity, etc ( wu-2018 )
  • Compared to these, cameras are flexible and low-cost ( wu-2018 ) (are also passive sensors) ( cometlabs )
• Radiobaken