{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,11]],"date-time":"2025-11-11T13:44:23Z","timestamp":1762868663800,"version":"build-2065373602"},"reference-count":39,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2021,10,2]],"date-time":"2021-10-02T00:00:00Z","timestamp":1633132800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>This article presents an analysis of measurements collected during a six-month-long experimental deployment of a surface-placed horizontal magnetic loop antenna. The changes in the measured parameters of the loop are investigated in relation to the surrounding environment\u2019s composition, temperature and water content. Basic functions describing these changes are formulated. The results are confronted with outcomes from similar experiments from previous years and different locations, showing good compliance. The developed functions and antenna system can be used for environmental monitoring of soil composition and humidity over large areas and volumes, helpful in, for example, flood awareness.<\/jats:p>","DOI":"10.3390\/rs13193946","type":"journal-article","created":{"date-parts":[[2021,10,8]],"date-time":"2021-10-08T21:26:20Z","timestamp":1633728380000},"page":"3946","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Environmental Sensitivity of Large Stealth Longwave Antenna Systems"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3921-6875","authenticated-orcid":false,"given":"Tomasz Aleksander","family":"Mi\u015b","sequence":"first","affiliation":[{"name":"Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, 00-665 Warsaw, Poland"}]},{"given":"J\u00f3zef","family":"Modelski","sequence":"additional","affiliation":[{"name":"Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, 00-665 Warsaw, Poland"}]}],"member":"1968","published-online":{"date-parts":[[2021,10,2]]},"reference":[{"key":"ref_1","unstructured":"Bosch, F., and Gurk, M. (2000, January 20\u201324). Comparison of RF-EM, RMT and SP measurements on a karstic terrain in the Jura mountains (Switzerland). Proceedings of the Seminar \u2018Electromagnetische Tiefenforschung\u2019, Altenberg, Germany."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Kirsch, R. (2009). Groundwater Geophysics: A Tool for Hydrogeology, Springer-Verlag. [2th ed.].","DOI":"10.1007\/978-3-540-88405-7"},{"key":"ref_3","unstructured":"Bem, D.J. (1974). Auxiliary Materials for Propagation Calculations, Wroc\u0142aw University of Technology."},{"key":"ref_4","first-page":"577","article-title":"Antenna Array in the Radio Broadcasting Centre Solec Kujawski (Polish Radio, JSC)","volume":"8\u20139","author":"Bem","year":"2000","journal-title":"Przegl\u0105d Telekomun. Wiadomo\u015bci Telekomun."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"296","DOI":"10.1109\/TAP.1963.1138035","article-title":"Submerged antenna characteristics","volume":"11","author":"Fenwick","year":"1963","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Mi\u015b, T.A., and Modelski, J. (2018, January 15\u201317). Stratospheric VLF Vertical Electric Mono- and Dipole Antenna Tests in 2014\u20132015. Proceedings of the 2018 Baltic URSI Symposium, Pozna\u0144, Poland.","DOI":"10.23919\/URSI.2018.8406693"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Mi\u015b, T.A. (2018, January 8\u201313). The concept of an airborne VLF transmitter with vertical electric dipole antenna. Proceedings of the IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Boston, MA, USA.","DOI":"10.1109\/APUSNCURSINRSM.2018.8608979"},{"key":"ref_8","unstructured":"Wilson, D. (2003). Channel Characterization and System Design for Sub-Surface Communications. [Ph.D. Dissertation, The University of Leeds, School of Electronic and Electrical Engineering]."},{"key":"ref_9","unstructured":"Burrows, M.L. (1978). ELF Communications Antennas, Peter Peregrinus Ltd."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"528","DOI":"10.1109\/TAP.1960.1144888","article-title":"An island as a natural very-low-frequency transmitting antenna","volume":"8","author":"Morgan","year":"1960","journal-title":"IRE Trans. Antennas Propag."},{"key":"ref_11","first-page":"30","article-title":"VLF Earth loop Antennas. Part I","volume":"1","author":"Pickworth","year":"1991","journal-title":"Electron. Today Int."},{"key":"ref_12","first-page":"7","article-title":"Radiation of Very Low and Extremely Low Frequencies (VLF & ELF) by a natural antenna based on an island or a peninsula structure","volume":"2004","author":"Uzunoglu","year":"2004","journal-title":"Radio Sci. Bull."},{"key":"ref_13","first-page":"15","article-title":"Personal safety indicator for the detection of pre-fainting stage of the miners and others","volume":"1","year":"1987","journal-title":"Wiadomo\u015bci G\u00f3rnicze"},{"key":"ref_14","first-page":"84","article-title":"Low-frequency input impedance of a very large loop antenna with a mountain core","volume":"140","author":"Barr","year":"1993","journal-title":"IEE Proc."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Mi\u015b, T.A., and Modelski, J. (2020). The Analysis of Experimental Deployment of IGLUNA 2019 Trans-Ice Longwave System. Remote Sens., 12.","DOI":"10.3390\/rs12244045"},{"key":"ref_16","unstructured":"Republic of Poland's Office of Electronic Communications (2021). Document DC.WRT.5104.6.2020.6, Republic of Poland's Office of Electronic Communications."},{"key":"ref_17","unstructured":"Mi\u015b, T.A. (October, January 30). The design, development and demonstration of longwave communication system for lunar surface operations. Proceedings of the SECESA Conference on Space System Engineering, Delft, The Netherlands."},{"key":"ref_18","unstructured":"Mi\u015b, T.A. (2020, January 5\u20138). The results of IGLUNA 2019 trans-ice longwave communication system tests. Proceedings of the MIKON Conference, Warszawa, Poland."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Mi\u015b, T.A. (2020, January 5\u20138). The performance analysis and optimization of IGLUNA 2019 lunar-analogue longwave transmitting system. Proceedings of the Baltic URSI Conference, Warszawa, Poland.","DOI":"10.23919\/URSI48707.2020.9254014"},{"key":"ref_20","unstructured":"(2018). Digital Multimeter AXIOMET AX-588B. User Manual, Transfer Multisort Electronic."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Titow, W. (1984). PVC Technology, Elsevier Applied Science Publishers.","DOI":"10.1007\/978-94-009-5614-8"},{"key":"ref_22","unstructured":"Kaczy\u0144ski, N. (1950). Soil, PIWR. (In Polish)."},{"key":"ref_23","unstructured":"Wieczysty, A. (1970). Engineering Hydrogeology, PWN. (In Polish)."},{"key":"ref_24","unstructured":"Falkowski, M., Nowak, M., Pro\u0144czuk, J., and Ralski, E. (1970). Meadowing. Vol II: Meadow Management, PWRiL. (In Polish)."},{"key":"ref_25","unstructured":"Badru, R.A., Adeniran, S.A., and Atijosan, A.O. (2015). Effect of magnetic field on charged water vapour in motion. Eur. J. Eng. Technol., 3."},{"key":"ref_26","first-page":"63","article-title":"Electric properties of water. New experimental data in the 5 Hz\u201413 MHz frequency range","volume":"52","author":"Rusiniak","year":"2004","journal-title":"Acta Geophys. Pol."},{"key":"ref_27","unstructured":"Janeczek, A. (2003). Simple induction meter. Electron. All, 50\u201351. (In Polish)."},{"key":"ref_28","unstructured":"Poisel, R.A. (2012). Antenna Systems and Electronic Warfare Applications, Artech House."},{"key":"ref_29","unstructured":"Kulikovski, A.A. (1971). Radioelectronics\u2014A Handbook. Volume 1, WKi\u0141. (In Polish)."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Jeffery, J.E. (1997). Impedance control of conductors acting as transmission lines in printed boards for high-frequency digital applications. Circuit World, 23.","DOI":"10.1108\/03056129710370150"},{"key":"ref_31","unstructured":"(2019). Investigation of a Transmission Line, Cz\u0119stochowa University of Technology, Division of Electrotechnology, WZET Laboratory. (In Polish)."},{"key":"ref_32","unstructured":"(1971). Electron Tube Handbook. Vol. II, Brown, Boveri & Co., Ltd."},{"key":"ref_33","first-page":"3","article-title":"Statistical-physical models of mass and energy flow in porous environments","volume":"29","author":"Usowicz","year":"2000","journal-title":"Acta Agroph."},{"key":"ref_34","unstructured":"(2017). Recommendation ITU-R P.527\u20134. Electrical Characteristics of the Surface of the Earth, ITU."},{"key":"ref_35","unstructured":"(2021, February 01). Electrical Permittivity Characterization of Aqueous Solutions. Available online: https:\/\/chem.libretexts.org\/Bookshelves\/Analytical_Chemistry."},{"key":"ref_36","first-page":"144","article-title":"Reception of ELF signals at antipodal distances. Interaction of electromagnetic fields of ELF controlled sources with the ionosphere and Earth's crust","volume":"1","author":"Bannister","year":"2014","journal-title":"Proc. All-Russ. Res. Pract. Workshop"},{"key":"ref_37","first-page":"40","article-title":"Geomagnetic properties of rocks","volume":"1","author":"Gierlotka","year":"2019","journal-title":"Propuls. Steer."},{"key":"ref_38","unstructured":"Finkyelshteyn, M.I., Mendyelson, W.L., and Kutyev, W.A. (1977). Radiolocation of Layered Ground Covers, Sovetskoye Radio. (In Russian)."},{"key":"ref_39","unstructured":"(2013). Guide on the measurements of conductivity. Theory and Practice Of Measurement Execution, Mettler-Toledo Sp.z.o.o. (In Polish)."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/19\/3946\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T07:08:46Z","timestamp":1760166526000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/19\/3946"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,10,2]]},"references-count":39,"journal-issue":{"issue":"19","published-online":{"date-parts":[[2021,10]]}},"alternative-id":["rs13193946"],"URL":"https:\/\/doi.org\/10.3390\/rs13193946","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2021,10,2]]}}}