Prof. Kalevi Hyyppä Profile

Prof. Kalevi Hyyppä

Sr Lecturer at Luleå Univ of Technology

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Author

Publications (5)

SPIE Journal Paper | 1 October 2008

Multisource flash system for retroreflective beacon detection in CMOS cameras

Håkan Fredriksson, Kalevi Hyyppä

OE, Vol. 47, Issue 10, 103001, (October 2008) https://doi.org/10.1117/12.10.1117/1.3000582

KEYWORDS: Light emitting diodes, Cameras, Imaging systems, Receivers, Diodes, CMOS cameras, CMOS sensors, Bidirectional reflectance transmission function, Sensors, Navigation systems

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SPIE Journal Paper | 1 July 2005

Using a discrete thermal model to obtain a linear frequency ramping in a frequency-modulated continuous-wave system

Daniel Nordin, Kalevi Hyyppae

OE, Vol. 44, Issue 07, 074202, (July 2005) https://doi.org/10.1117/12.10.1117/1.1949205

KEYWORDS: Modulation, Thermal modeling, Semiconductor lasers, Silicon, Copper, Thermal effects, Continuous wave operation, Photodiodes, Optical engineering, Plasma

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SPIE Journal Paper | 1 May 2002

Advantages of a new modulation scheme in an optical self mixing frequency-modulated continuous-wave system

Daniel Nordin, Kalevi Hyyppae

OE, Vol. 41, Issue 05, (May 2002) https://doi.org/10.1117/12.10.1117/1.1467063

KEYWORDS: Modulation, Doppler effect, Semiconductor lasers, Oscillators, Photodiodes, Distance measurement, Continuous wave operation, Diodes, Frequency modulation, Sensors

Proceedings Article | 31 January 2001 Paper

Dividing optical power for maximum signal-to-noise ratio in a self-mixing FMCW system

Daniel Nordin, Kalevi Hyyppae

Proceedings Volume 4167, (2001) https://doi.org/10.1117/12.413838

KEYWORDS: Signal to noise ratio, Photodiodes, Oscillators, Modulation, Receivers, Interference (communication), Spatial resolution, LIDAR, Sensors, Diodes

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SPIE Journal Paper | 1 August 1994

Signal response of a laser beam scanner

Kalevi Hyyppae

OE, Vol. 33, Issue 08, (August 1994) https://doi.org/10.1117/12.10.1117/12.177107

KEYWORDS: Receivers, Signal to noise ratio, Photodiodes, Electronic filtering, Optical filters, Optical amplifiers, Laser scanners, 3D scanning, LIDAR, Mirrors

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