00000nam 2200000zi 4500 9.870911 CaOODSP 20240219183506 m o d f cr ||||||||||| 190402t20172017onca|||#ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre eng n-cn--- D68-2/079-2017E-PDF Wong, S. (Sylvester) author. Passive target localization using a geometric approach to the time-difference-of-arrival method / S. Wong, R. Jassemi-Zargani, D. Brookes, B. Kim, DRDC - Ottawa Research Centre. [Ottawa] : Defence Reseach and Development Canada, 2017. ©2017 1 online resource (x, 62 pages) : colour illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier Scientific report ; DRDC-RDDC-2017-R079 "June 2017." Includes bibliographical and hyperlink references (pages 53-55). "Passive sensing offers a viable and effective means of detecting and geolocating small flying targets such as micro- and nano-drones by exploiting their radio-frequency signal emissions. Target location using the time-difference-of-arrival (TDOA) method is investigated. For target localization in three-dimensional space, a set of three non-linear TDOA equations is required. Each equation contains a TDOA measurement processed from signals detected by a pair of receivers. A system of four receivers is needed to generate three independent TDOA measurements. The solution to each TDOA equation is represented by a hyperboloid surface. The intersection of three hyperboloid surfaces is then computed to determine the target location. This geometric approach to solving the TDOA problem is taken in this study."--Abstract, page i. Includes abstract in French. gccst Aircraft gccst Detection Jassemi-Zargani, Rahim, 1960- author. Brookes, Dan, author. Kim, Bumsoo, author. Defence R&D Canada. Scientific report (Defence R&D Canada) DRDC-RDDC-2017-R079 (CaOODSP)9.802305 PDF 4.86 MB https://publications.gc.ca/collections/collection_2019/rddc-drdc/D68-2-079-2017-eng.pdf