{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:12:03Z","timestamp":1760231523441,"version":"build-2065373602"},"reference-count":22,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2022,9,23]],"date-time":"2022-09-23T00:00:00Z","timestamp":1663891200000},"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>The sensitivity and robustness against background noise of optical measurements, and specifically range-finding, can be improved by detecting the light with photon-number-resolving detectors (PNRD). We use a PNRD to detect single pulse reflections from the seabed level in the presence of high attenuation of the sea water. Measurements are performed from above the sea level, overcoming broad daylight conditions. We demonstrate continuous measurement of the seabed depth up to around 24 m, using laser pulse energies of 10 \u03bcJ, while sailing at speed of 2.2 knots. Additionally, we use these data to extract values of the refractive index and optical attenuation in coastal seawater. The method could be used as a novel and optically-accurate bathymetry tool for coastal research and underwater sensing applications.<\/jats:p>","DOI":"10.3390\/rs14194750","type":"journal-article","created":{"date-parts":[[2022,9,23]],"date-time":"2022-09-23T04:07:07Z","timestamp":1663906027000},"page":"4750","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Laser Ranging Bathymetry Using a Photon-Number-Resolving Detector"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5236-9932","authenticated-orcid":false,"given":"Lior","family":"Cohen","sequence":"first","affiliation":[{"name":"Racah Institute for Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel","family":"Istrati","sequence":"additional","affiliation":[{"name":"Racah Institute for Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoni","family":"Sher","sequence":"additional","affiliation":[{"name":"School of Computer Science and Engineering, Hebrew University of Jerusalem, Jerusalem 91904, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zev","family":"Brand","sequence":"additional","affiliation":[{"name":"Independent Researcher, Modi\u2019in 71700, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hagai S.","family":"Eisenberg","sequence":"additional","affiliation":[{"name":"Racah Institute for Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"283","DOI":"10.1117\/12.57988","article-title":"Pulsed time-of-flight laser range-finding techniques for industrial applications","volume":"Volume 1614","author":"Kostamovaara","year":"1992","journal-title":"Optics, Illumination, and Image Sensing for Machine Vision VI"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"344","DOI":"10.1364\/OPTICA.408657","article-title":"Single-photon imaging over 200 km","volume":"8","author":"Li","year":"2021","journal-title":"Optica"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"23822","DOI":"10.1364\/OE.21.023822","article-title":"Photon counting compressive depth mapping","volume":"21","author":"Howland","year":"2013","journal-title":"Opt. 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