{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T07:18:08Z","timestamp":1761808688896,"version":"build-2065373602"},"reference-count":22,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2024,9,17]],"date-time":"2024-09-17T00:00:00Z","timestamp":1726531200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Engineering Research &amp; Development Center under a Cooperative Agreement"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The complex permittivity of adobe is measured using a coaxial probe system verses frequency (500 MHz to 7 GHz) and water content (0% to 6%). Measurements are performed using adobe samples collected from abode bricks. The geotechnical properties of the compressed earth bricks are characterized by (1) percentage of gravel, sands, and fines; (2) Atterberg limits; and (3) grain-size distribution. The variation in adobe complex permittivity verses frequency is measured at discrete levels of water content using small adobe samples exposed to controlled levels of constant humidity in an environmental chamber. The typical water content profile verses depth for an adobe brick is also determined.<\/jats:p>","DOI":"10.3390\/rs16183445","type":"journal-article","created":{"date-parts":[[2024,9,18]],"date-time":"2024-09-18T00:51:43Z","timestamp":1726620703000},"page":"3445","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Complex Permittivity of Adobe Verses Frequency and Water Content"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-9223-5947","authenticated-orcid":false,"given":"Steven R.","family":"Price","sequence":"first","affiliation":[{"name":"United States Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, MS 39180, USA"}]},{"given":"J. Patrick","family":"Donohoe","sequence":"additional","affiliation":[{"name":"Electrical and Computer Engineering Department, Bagley College of Engineering, Mississippi State University, Starkville, MS 39762, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2278-1015","authenticated-orcid":false,"given":"Stanton R.","family":"Price","sequence":"additional","affiliation":[{"name":"United States Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, MS 39180, USA"}]},{"given":"Josh","family":"Fairley","sequence":"additional","affiliation":[{"name":"United States Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, MS 39180, USA"}]},{"given":"Stephanie","family":"Robert","sequence":"additional","affiliation":[{"name":"United States Army Corps of Engineers, Engineer Research and Development Center, Vicksburg, MS 39180, USA"}]}],"member":"1968","published-online":{"date-parts":[[2024,9,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"570","DOI":"10.1016\/j.jfranklin.2008.01.004","article-title":"Sense through the wall system development and design considerations","volume":"345","author":"Farwell","year":"2008","journal-title":"J. Frankl. Inst."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"556","DOI":"10.1016\/j.jfranklin.2008.01.005","article-title":"Through-wall sensing; radar signal processing; model-based reasoning; propagation effects","volume":"345","author":"Baranoski","year":"2008","journal-title":"J. Frankl. Inst."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1109\/MMW.2003.1237477","article-title":"Enhancing homeland security with advanced UWB sensors","volume":"4","author":"Withington","year":"2003","journal-title":"IEEE Microw. Mag."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"62","DOI":"10.1117\/12.336988","article-title":"Survey of current technologies for through-the-wall surveillance (TWS)","volume":"Volume 3577","author":"Ferris","year":"1999","journal-title":"Proceedings of the Sensors, C3I, Information, and Training Technologies for Law Enforcement"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Price, S., Donohoe, J.P., and Fairley, J.R. (2014, January 19\u201323). Effects of wall moisture profiles on matched illumination waveforms\u2014Simulation and measurement. Proceedings of the 2014 IEEE Radar Conference, Cincinnati, OH, USA.","DOI":"10.1109\/RADAR.2014.6875661"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1402","DOI":"10.1109\/LGRS.2015.2403791","article-title":"Impacts of wall\u2013target interaction on matched illumination waveforms for twri","volume":"12","author":"Price","year":"2015","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"453","DOI":"10.1016\/S0008-8846(98)00009-X","article-title":"Magnetic resonance imaging and moisture content profiles of drying concrete","volume":"28","author":"Beyea","year":"1998","journal-title":"Cem. Concr. Res."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"177","DOI":"10.2528\/PIERB10091004","article-title":"Measured complex permittivity of walls with different hydration levels and the effect on power estimation of TWRI target returns","volume":"30","author":"Thajudeen","year":"2011","journal-title":"Prog. Electromagn. Res. B"},{"key":"ref_9","unstructured":"Menke, F., Knochel, R., Boltze, T., Hauenschild, C., and Leschnik, W. (1995, January 15\u201320). Moisture measurement in walls using microwaves. Proceedings of the 1995 IEEE MTT-S International Microwave Symposium, Orlando, FL, USA."},{"key":"ref_10","unstructured":"Huizinga, R. (2012). Assessment on the Moisture Content in the Brick Walls of the Church in Bergeijk with the Use of a Microwave Meter. [Master\u2019s Thesis, University of Groningen]."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"389","DOI":"10.1016\/S0963-8695(01)00005-6","article-title":"Moisture measurements in building materials with microwaves","volume":"34","author":"Rudolph","year":"2001","journal-title":"NDT E Int."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"259","DOI":"10.1016\/S0963-8695(98)00011-5","article-title":"Investigation of dielectric properties of brick materials as a function of moisture and salt content using a microwave impulse technique at very high frequencies","volume":"31","author":"Maierhofer","year":"1998","journal-title":"NDT E Int."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"419","DOI":"10.1016\/S0963-8695(01)00009-3","article-title":"Dielectric properties of concrete and their influence on radar testing","volume":"34","author":"Soutsos","year":"2001","journal-title":"NDT E Int."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1016\/S0926-9851(98)00009-3","article-title":"Dielectric permittivity of concrete between 50 MHz and 1 GHz and GPR measurements for building materials evaluation","volume":"40","author":"Robert","year":"1998","journal-title":"J. Appl. Geophys."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1372","DOI":"10.1016\/j.buildenv.2005.05.023","article-title":"An operative protocol for reliable measurements of moisture in porous materials of ancient buildings","volume":"41","author":"Sandrolini","year":"2006","journal-title":"Build. Environ."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"2413","DOI":"10.1049\/el:19981694","article-title":"Moisture measurement in masonry walls using a non-invasive reflectometer","volume":"34","author":"Hauschild","year":"1998","journal-title":"Electron. Lett."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"837","DOI":"10.1016\/j.conbuildmat.2008.04.002","article-title":"Non-destructive evaluation of concrete physical condition using radar and artificial neural networks","volume":"23","author":"Laurens","year":"2009","journal-title":"Constr. Build. Mater."},{"key":"ref_18","unstructured":"Reckhow, D.A. (2023, June 01). Gravimetric Methods. Available online: www.ecs.umass.edu\/cee\/reckhow\/courses\/572\/572bk15\/572BK15.html."},{"key":"ref_19","unstructured":"(2023, May 12). Agilent 805070E Dielectric Probe Kit 200 MHz to 50 GHz. Available online: http:\/\/literature.cdn.keysight.com\/litweb\/pdf\/5989-0222EN.pdf."},{"key":"ref_20","unstructured":"(2024, July 01). Technical Overview\u2014N1501A Dielectric Probe Kit. Available online: https:\/\/www.keysight.com\/us\/en\/assets\/7018-04631\/technical-overviews\/5992-0264.pdf."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Price, S.R., Price, S.R., and Anderson, D.T. (2019, January 23\u201326). Introducing fuzzy layers for deep learning. Proceedings of the 2019 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), New Orleans, LA, USA.","DOI":"10.1109\/FUZZ-IEEE.2019.8858790"},{"key":"ref_22","first-page":"31","article-title":"Artificial intelligence supported material design for tailored image transformations","volume":"Volume 11406","author":"Lindsay","year":"2020","journal-title":"Proceedings of the Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXXI"}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/16\/18\/3445\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T15:57:48Z","timestamp":1760111868000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/16\/18\/3445"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,9,17]]},"references-count":22,"journal-issue":{"issue":"18","published-online":{"date-parts":[[2024,9]]}},"alternative-id":["rs16183445"],"URL":"https:\/\/doi.org\/10.3390\/rs16183445","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2024,9,17]]}}}