Helicopters often strike against obstacles such as a power line. To reduce such collisions, we are developing an obstacle detection and warning system for helicopters. This paper describes the techniques to detect wire-like obstacles by infrared (IR) images. Measurements were conducted to gather IR images and to investigate the sensor performance to detect obstacles in different environments. IR images proved that the use of IR cameras could greatly increase the possibility of detecting obstacles that could never be found by naked eyes. The performance to suppress sunlight noise by the 8-12 mm IR camera was also demonstrated. However, the target-to-background contrast of the original IR images was not enough as the advisory by which a pilot maneuvers his helicopter. There were cases that even IR cameras failed to detect obstacles in adverse weather and background conditions. Image processing techniques were then proposed to enhance the contrast of IR images and to improve the coverage in adverse conditions. An experimental millimeter wave (MMW) radar is now being developed to improve the detection performance and to add distance information on the enhanced images. The configuration of the MMW radar and the results of preliminary measurements by the radar were presented.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Obstacle detection for helicopter flights by infrared images


    Beteiligte:
    Yamamoto, Kazuo (Autor:in) / Yamada, Kimio (Autor:in)

    Kongress:

    Enhanced and Synthetic Vision 2001 ; 2001 ; Orlando,FL,United States


    Erschienen in:

    Erscheinungsdatum :

    2001-08-28





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Obstacle detection for helicopter flights by infrared images [4363-10]

    Yamamoto, K. / Yamada, K. / International Society for Optical Engineering | British Library Conference Proceedings | 2001


    Autonomous vision-based helicopter flights through obstacle gates

    Andert, Franz / Adolf, Florian-M. / Goormann, Lukas et al. | Tema Archiv | 2010


    Helicopter flying obstacle detection based on the fusion of infrared and optical images

    Xie, Zixin / Zhang, Gong / Fang, Zheng et al. | SPIE | 2023


    Obstacle detection and warning for helicopter flight using infrared and millimeter wave

    Yonemoto, Naruto / Yamamoto, Kazuo / Yamada, Kimio et al. | SPIE | 2003