A laser radar based on a “impulse-like” laser diode transmitter and a 2D SPAD/TDC receiver

Huikari, Jaakko; Jahromi, Sahba; Jansson, Jussi-Pekka; Kostamovaara, Juha (2017-07-07)
 
Avaa tiedosto
Lataukset: 

URL:
https://doi.org/10.1109/I2MTC.2017.7969799

Huikari, Jaakko
Jahromi, Sahba
Jansson, Jussi-Pekka
Kostamovaara, Juha
Institute of Electrical and Electronics Engineers
07.07.2017

J. Huikari, S. Jahromi, J. Jansson and J. Kostamovaara, "A laser radar based on a “impulse-like” laser diode transmitter and a 2D SPAD/TDC receiver," 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Turin, 2017, pp. 1-6. doi: 10.1109/I2MTC.2017.7969799

https://rightsstatements.org/vocab/InC/1.0/
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
https://rightsstatements.org/vocab/InC/1.0/
doi:https://doi.org/10.1109/I2MTC.2017.7969799
Näytä kaikki kuvailutiedot
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2018121851277
Tiivistelmä

Abstract

A pulsed TOF laser radar has been implemented and its performance characterized. The transmitter applies a QW double-heterostructure laser diode producing 0.6 nJ/ 100 ps laser pulses at the central wavelength of ~ 817 nm. The detector is a single-chip IC, manufactured in the standard 0.35 μm HV CMOS process, including a 9×9 SPAD array and a 10-channel TDC circuit. Both the SPAD array and the TDC circuit support a time gating feature allowing photon detection only to occur within a predefined time window. The SPAD array also supports the sub-array selection feature in order to respond to the laser spot wandering effect due to paraxial optics. A sub-array is a 3×3 SPAD array freely chosen within a 9×9 SPAD array. The characteristic measurement results demonstrate the measurement range of tens of meters with a linearity precision +/- 0.5 mm to the 11% target reflectivity and at pulsing frequency of 100 kHz. The distance dependent detection rate varies from 28% to 500%, thus providing a high measurement rate. The single-shot precision is ~ 20 mm. The deteriorating impact of high-level background radiation conditions on the SNR has been demonstrated as well as a scheme to improve it by detector time gating.

Kokoelmat