{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T00:45:40Z","timestamp":1775868340935,"version":"3.50.1"},"reference-count":35,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,2,25]],"date-time":"2022-02-25T00:00:00Z","timestamp":1645747200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Innovation Fund Denmark","award":["IFD grant 6159-00002B"],"award-info":[{"award-number":["IFD grant 6159-00002B"]}]},{"name":"EIT-RM","award":["https:\/\/eitrawmaterials.eu\/project\/muverdrone\/"],"award-info":[{"award-number":["https:\/\/eitrawmaterials.eu\/project\/muverdrone\/"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Using Uncrewed Aerial vehicles (UAVs) to rapidly scan areas for potential unexploded ordnance (UXO) can provide an efficiency increase while minimizing detonation risks. We present a complete overview of how such mappings can be performed using scalar magnetometers, including initial sensor testing, time stamping validation, data positioning, noise removal, and source model inversion. A test survey was performed across disarmed UXO targets, during which three scalar magnetometers were towed in an airframe (\u201cbird\u201d) 10 m below a small (&lt;25 kg) high speed (\u223c10 m\/s) UAV to avoid magnetic disturbances from the UAV itself. Data were collected across \u223c58 min of flight, with each sensor traversing \u223c31.7 km to acquire dense data coverage across a 600 m \u00d7 100 m area. By using three individual magnetometers in the bird, UXO detection results across single-sensor data and several different multi-sensor configurations can be compared. The data obtained exhibited low apparent noise floors (on the order of tens of picoTesla) and retained a precision that enabled targeted modelling and removal of high-frequency noise with amplitudes of \u00b15 picoTesla. All of the different gradiometer configurations tested enabled recovery of most targets (including all major targets), although the horizontal configuration performed significantly worse in comparison.<\/jats:p>","DOI":"10.3390\/rs14051134","type":"journal-article","created":{"date-parts":[[2022,2,27]],"date-time":"2022-02-27T20:48:33Z","timestamp":1645994913000},"page":"1134","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":44,"title":["High-Speed Magnetic Surveying for Unexploded Ordnance Using UAV Systems"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5713-4160","authenticated-orcid":false,"given":"Mick Emil","family":"Kolster","sequence":"first","affiliation":[{"name":"CMAGTRES Group Division of Geomagnetism and Geospace, DTU Space, The Technical University of Denmark, 2800 Kgs. Lyngby, Denmark"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8849-1099","authenticated-orcid":false,"given":"Mark David","family":"Wigh","sequence":"additional","affiliation":[{"name":"CMAGTRES Group Division of Geomagnetism and Geospace, DTU Space, The Technical University of Denmark, 2800 Kgs. Lyngby, Denmark"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5893-930X","authenticated-orcid":false,"given":"Eduardo","family":"Lima Sim\u00f5es da Silva","sequence":"additional","affiliation":[{"name":"CMAGTRES Group Division of Geomagnetism and Geospace, DTU Space, The Technical University of Denmark, 2800 Kgs. Lyngby, Denmark"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3123-0995","authenticated-orcid":false,"given":"Tobias","family":"Bjerg Vilhelmsen","sequence":"additional","affiliation":[{"name":"CMAGTRES Group Division of Geomagnetism and Geospace, DTU Space, The Technical University of Denmark, 2800 Kgs. Lyngby, Denmark"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0369-3984","authenticated-orcid":false,"given":"Arne","family":"D\u00f8ssing","sequence":"additional","affiliation":[{"name":"CMAGTRES Group Division of Geomagnetism and Geospace, DTU Space, The Technical University of Denmark, 2800 Kgs. Lyngby, Denmark"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Tezkan, B., Stoll, J.B., Bergers, R., and Gro\u00dfbach, H. (2011). Unmanned aircraft system proves itself as a geophysical measuring platform for aeromagnetic surveys. 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