Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Pekka Keranen"'
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 2, Pp 1-7 (2024)
A solid-state three-dimensional (3-D) range imager using the pulsed time-of-flight principle and a single photon avalanche diode (SPAD) based receiver is demonstrated. Contrary to conventional flood illumination, the suggested system uses sequentiall
Externí odkaz:
https://doaj.org/article/cb891b64adc04fa58de1680bc8424ee7
Autor:
Juha Kostamovaara, Sahba Jahromi, Lauri Hallman, Guoyong Duan, Jussi-Pekka Jansson, Pekka Keranen
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 2, Pp 1-11 (2022)
Full realization of a solid-state 3-D range imager based on the pulsed time-of-flight method is presented. The system uses block-based segmented illumination in the transmitter realized with a 16-element common anode laser diode bar. The receiver is
Externí odkaz:
https://doaj.org/article/7db222db7816471191b5186a80b2b386
Autor:
Ilpo Niskanen, Lauri Hallman, Pekka Keranen, Juha Kostamovaara, Rauno Heikkilä, Mikko Hiltunen, Matti Immonen
Publikováno v:
IEEE Sensors Journal. 21:17200-17206
The research aimed to integrate a solid-state 2D-pulsed time-of-flight (TOF) flash Lidar profilometer and a mechanically scanning 3D Lidar in order to monitor the 4D (3D + signal intensity) environment at a construction site from an excavator. Utiliz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4862720f903970636ec6dbdf8c7732cd
https://doi.org/10.1109/jsen.2021.3078301
https://doi.org/10.1109/jsen.2021.3078301
Autor:
ukasz Dziechciarczyk, Vasili G. Savitski, Antti Härkönen, Alan J. Kemp, Pekka Keranen, Sean Reilly, Anssi J. Mäkynen, Ilkka Nissinen, Mircea Guina, Tuomo Talala, Jari Nikkinen, Ville A. Kaikkonen
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 70:1-10
A time-resolved Raman spectrometer is demonstrated based on a 256\times 8 single-photon avalanche diodes fabricated in CMOS technology (CMOS SPAD) line sensor and a 573-nm fiber-coupled diamond Raman laser delivering pulses with duration below 100-ps
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5a7a21a88297d0d124a9cbf3dbf547d
https://doi.org/10.1109/tim.2021.3054679
https://doi.org/10.1109/tim.2021.3054679
Publikováno v:
IEEE Journal of Solid-State Circuits. 55:1960-1970
A single-chip receiver for pulsed laser direct time-of-flight 3-D imaging applications has been realized in a 0.35- $\mu \text{m}$ HV CMOS technology. The chip includes a $32 \times 128$ single-photon avalanche diode (SPAD) array [35% fill factor (FF
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5893dff8091d5487c4e9912da242c5d1
https://doi.org/10.1109/jssc.2020.2970704
https://doi.org/10.1109/jssc.2020.2970704
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 69:3928-3935
A time-to-digital converter (TDC) often consists of sophisticated, multilevel, subgate delay structures, when time intervals need to be measured precisely. The resolution improvement is rewarding until integral nonlinearity (INL) and random jitter be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::686015856a129acbb87aa4ee84085d66
https://doi.org/10.1109/tim.2019.2932156
https://doi.org/10.1109/tim.2019.2932156
Autor:
Pekka Keranen, Juha Kostamovaara
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 66:4122-4133
A receiver circuit for pulsed time-of-flight line profiling laser radar has been designed in $0.35\mu \text {m}$ CMOS technology. The receiver consists of a line detector array with $256\times 8$ SPADs with a pitch of $41.6\mu \text {m}$ . The diamet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fdcaa64f3c89124a3e4cf6211d60804
https://doi.org/10.1109/tcsi.2019.2923263
https://doi.org/10.1109/tcsi.2019.2923263
Autor:
Juha Kostamovaara, Pekka Keranen
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 66:524-533
This paper presents the design of a CMOS time-todigital converter (TDC) used in a direct time-of-flight laser radar line receiver consisting of an array of single-photon avalanche diodes (SPADs) and 256 TDCs. The TDCs use the Nutt interpolation metho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73c86a9529a39d4fe3316f6f584835c3
https://doi.org/10.1109/tcsi.2018.2868242
https://doi.org/10.1109/tcsi.2018.2868242
Autor:
Sahba Jahromi, Eugene A. Avrutin, Pekka Keranen, Juha Kostamovaara, Boris S. Ryvkin, Jussi-Pekka Jansson
Publikováno v:
Optical Engineering. 60
A laser diode illuminator for single-photon avalanche diode detection-based pulsed time-of-flight 3D range imaging is presented. The illuminator supports a block-based illumination scheme and consists of a 16-element custom-designed common anode quan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::937e5ebd8aa03e2bb2f1aa60e3015f68
https://doi.org/10.1117/1.oe.60.5.054105
https://doi.org/10.1117/1.oe.60.5.054105
Autor:
Timo Laaksonen, Ilkka Nissinen, Anssi J. Mäkynen, Marjo Yliperttula, Jere Kekkonen, Jacopo Zini, Tuomo Talala, Pekka Keranen, Ville A. Kaikkonen
Publikováno v:
Journal of controlled release : official journal of the Controlled Release Society. 334
Hydrogels, natural and synthetic origin, are actively studied for their use for implants and payload carriers. These biomaterials for delivery systems have enormous potential in basic biomedical research, drug development, and long-term delivery of b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f955e0f44e2a8f688a8a91d28cfdf2d9
https://pubmed.ncbi.nlm.nih.gov/33930478
https://pubmed.ncbi.nlm.nih.gov/33930478