Design of Spreading-Codes-Assisted Active Imaging System. (1st July 2015)

• Record Type: Journal Article
• Authors: Volkov, Alexey; Žganec Gros, Jerneja; Žganec, Mario; Žganec, Mario; Javornik, Tomaž; Aleš, Švigelj
• Is Part Of: International journal of advanced robotic systems. Volume 12:Number 7(2015)
• Publication Date: 2015-07-01
• Subjects: range sensing -- modulated imaging -- CDMA; Robotics -- Periodicals; Robotics; Periodicals; 629.892
• DOI: 10.5772/60686
• Languages: English
• ISSNs: 1729-8806

Abstract

This work discusses an innovative approach to imaging which can improve the robustness of existing active-range measurement methods and potentially enhance their use in a variety of outdoor applications. By merging a proven modulation technique from the domain of spread-spectrum communications with the bleeding-edge CMOS sensor technology, the prototype of the modulated range sensor is designed and evaluated. A suitable set of application-specific spreading codes is proposed, evaluated and tested on the prototype. Experimental results show that the introduced modulation technique significantly reduces the impacts of environmental factors such as sunlight and external light sources, as well as mutual interference of identical devices. The proposed approach can be considered as a promising basis for a new generation of robust and cost-efficient range-sensing solutions for automotive applications, autonomous vehicles or robots.