Characterization and reduction of the amplitude-to-phase conversion effects in telemetry. (1st July 2015)

• Record Type: Journal Article
• Authors: Guillory, J; García-Márquez, J; Alexandre, C; Truong, D; Wallerand, J-P
• Is Part Of: Measurement science & technology. Volume 26:Number 8(2015:Aug.)
• Publication Date: 2015-07-01
• Subjects: laser diode -- photodetection -- amplitude modulation -- phase measurement -- amplitude-to-phase coupling -- optical telemetry -- absolute distance meter; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/0957-0233/26/8/084006
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: We are developing a telemeter based on the measurement of the phase accumulated by an RF sine wave during its propagation in air. This wave is carried by a laser beam by an intensity modulation. The main limitation of this technique lies in amplitude-to-phase conversion occurring in the detection of this modulation. Therefore, we characterize this phenomenon for a given telemetric system and discuss how to reduce its effects on the resolution and the accuracy of the distance measurement. Finally, a solution is implemented and tested outdoors in real conditions of use.