{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T03:33:48Z","timestamp":1760240028762,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2019,3,9]],"date-time":"2019-03-09T00:00:00Z","timestamp":1552089600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Institute of Civil Military Technology Cooperation (ICMTC)","award":["No. 17-CM-MC-08"],"award-info":[{"award-number":["No. 17-CM-MC-08"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper introduces a digital-assisted multiple echo detection scheme, which utilizes the waste time of the full serial data readout period in a focal plane array (FPA)-based laser detection and ranging (LADAR) receiver. With the support of an external digital signal processor (DSP) and additional analog memory inserted into the receiver, the proposed readout scheme can effectively enhance multi-target resolution (MTR) three times higher than the conventional FPA-based LADAR, while maintaining low power consumption and a small area. A prototype chip was fabricated in a 0.18-\u03bcm CMOS process with an 8 \u00d7 8 FPA configuration, where each single receiver pixel occupied an area of 100 \u03bcm \u00d7 100 \u03bcm. The single receiver achieved an MTR of 20 ns with 7.47 mW power dissipation, an input referred noise current of 4.48 pA\/\u221aHz with a bandwidth 530 MHz, a minimum detectable signal (MDS) of 340 nA, a maximum walk error of 2.2 ns, and a maximum non-linearity of 0.05% among the captured multiple echo images.<\/jats:p>","DOI":"10.3390\/s19051210","type":"journal-article","created":{"date-parts":[[2019,3,12]],"date-time":"2019-03-12T03:49:31Z","timestamp":1552362571000},"page":"1210","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["A High-Multi Target Resolution Focal Plane Array-Based Laser Detection and Ranging Sensor"],"prefix":"10.3390","volume":"19","author":[{"given":"Hyeon-June","family":"Kim","sequence":"first","affiliation":[{"name":"CIS Development Division, SK Hynix, Icheon 17336, Korea"}]},{"given":"Eun-Gyu","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Electronics Engineering, Chungnam National University, Daejeon 34134, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5532-7399","authenticated-orcid":false,"given":"Choul-Young","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Electronics Engineering, Chungnam National University, Daejeon 34134, Korea"}]}],"member":"1968","published-online":{"date-parts":[[2019,3,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1117\/1.1330700","article-title":"Laser ranging: A critical review of usual techniques for distance measurement","volume":"40","author":"Amann","year":"2001","journal-title":"Opt. 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