Mengmeng Du and Noboru Noguchi and Hiroshi Okamoto and Noriko Kobayashi, Topographic Mapping of Farmland by Integration of Multiple Sensors on Board Low-Altitude Unmanned Aerial System. journal = {International Journal of Computer and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology. September 2017, vol. 131(11). 1205 - 1209 [viewed 19 March 2024]. Available from: https://publications.waset.org/pdf/10008185.