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Who was the first to use radar to detect distant objects?

Continuous-wave radar

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Journal Article•DOI Detection of objects by synthetic aperture FM‐CW radar Yoshio Yamaguchi, Masashi Mitsumoto, Atsushi Kawakami, Masakazu Sengoku, Takeo Abe - Show less +4 more 01 Jan 1992-Electronics and Communications in Japan Part I-communications 12 Citations	It is shown that the radar has a potential ability in imaging objects placed in the near range.
Journal Article•DOI System Concept of WIFI Based Passive Radar Stanislaw Rzewuski, Krzysztof Kulpa - Show less +1 more 01 Dec 2011-International Journal of Electronics and Telecommunications 9 Citations	Having most of the signal sources in our passive radar environment it is possible to detect and to localize objects of interest.
Proceedings Article•DOI A noncoherent radar system approach for through-the-wall imaging Fauzia Ahmad, Moeness G. Amin - Show less +1 more 20 May 2005 21 Citations	The results show that the radar is able to detect and locate multiple targets behind walls.
Journal Article•DOI Noncoherent approach to through-the-wall radar localization Fauzia Ahmad, Moeness G. Amin - Show less +1 more 01 Oct 2006-IEEE Transactions on Aerospace and Electronic Systems 122 Citations	The results show that the radar is able to detect and locate multiple targets behind walls
Journal Article•DOI Nested code sequences of Barker — Mersenne — Raghavarao Mikhail Sergeev, Vadim A. Nenashev, Alexander Sergeev - Show less +2 more 21 Jun 2019 14 Citations	In particular, these results can be used in radar systems with high distance resolution, when detecting physical objects, including hidden ones.
Open access•Journal Article•DOI Constraining variable density of ice shelves using wide-angle radar measurements Reinhard Drews, Joel Brown, Kenichi Matsuoka, Emmanuel Witrant, Morgane Philippe, Bryn Hubbard, Frank Pattyn - Show less +6 more 15 Apr 2016-The Cryosphere 16 Citations	The radar method presented here is robust and can easily be adapted to different radar frequencies and data-acquisition geometries.
Open access•Proceedings Article•DOI Probabilistic Oriented Object Detection in Automotive Radar Xu Dong, Pengluo Wang, Pengyue Zhang, Langechuan Liu - Show less +3 more 11 Apr 2020 33 Citations	To the best of our knowledge this is the first attempt to investigate object detection with raw radar data for conventional corner automotive radars.

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