Laser diode transmitter for laser radar based on FM ranging principles

Wen-jin Yang; Ji-guang Zhao; Xiao-ping Du; Zhao-yang Zeng; Qiao Wang

doi:10.1117/12.791059

12 March 2008 Laser diode transmitter for laser radar based on FM ranging principles

Wen-jin Yang, Ji-guang Zhao, Xiao-ping Du, Zhao-yang Zeng, Qiao Wang

Proceedings Volume 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing; 662408 (2008) https://doi.org/10.1117/12.791059
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

The purpose of this paper is to present the prototype of the laser diode transmitter for the laser radar based on frequency-modulated (FM) ranging principles. It belongs to the time-of-flight measurement category. In this case, the time-of-flight is converted to a beat frequency proportional to the range to be measured. This conversion is realized with intensity modulation of the laser power by a linear FM continuous wave. FM ranging theory and the principle of operation are described to show the application of FM radar principles in laser radar. The design of laser diode illuminator and the key techniques in the transmitter are discussed, including the generation technique of the wideband radio-frequency (RF) chirp signal, design of the transmitter module and the laser beam collimation optics. The possible factors that may limit the performance the laser radar system are discussed.

Citation Download Citation

Wen-jin Yang, Ji-guang Zhao, Xiao-ping Du, Zhao-yang Zeng, and Qiao Wang "Laser diode transmitter for laser radar based on FM ranging principles", Proc. SPIE 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing, 662408 (12 March 2008); https://doi.org/10.1117/12.791059

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