학술논문

Optical Modulation and Antialiasing Methods for Experimental Verification of Sensor Signal Integrity
Document Type
Periodical
Source
IEEE Transactions on Instrumentation and Measurement IEEE Trans. Instrum. Meas. Instrumentation and Measurement, IEEE Transactions on. 67(1):101-106 Jan, 2018
Subject
Power, Energy and Industry Applications
Components, Circuits, Devices and Systems
Frequency modulation
Quantum cascade lasers
Harmonic analysis
Target tracking
Ring lasers
Aliasing
laser intensity modulation
ON–OFF keying
sensor characterization
sensor dynamic range
sensor frame rate
sensor performance
Language
ISSN
0018-9456
1557-9662
Abstract
In this paper, the use of laser modulation for characterizing the sensitivity of infrared sensors and autonomously adjusting frame rates are discussed. Lasers modulated at frequencies near the frame rate of the sensor under test demonstrated a more significant effect than modulation frequencies further from the frame rate. A method to quantify the effectiveness of a particular laser modulation frequency was developed. Experimental runs with and without laser tracking are compared in order to demonstrate how the laser affects the tracking algorithms of the sensor. The effect of the relationship between the modulation frequency and the frame rate on the sensor’s accuracy is also determined. An algorithm was developed to improve a sensor’s ability to detect signals modulated at its frame rate. The paper concludes with discussions on applications of these results to commonly available sensor systems.