Share Email Print
cover

Proceedings Paper

Preliminary study on the direct detection of phase coded signal for ranging in ladar
Author(s): Guangyu Cai; Jianfeng Sun; Ning Zhang; Guangyuan Li; Guo Zhang; Yucheng Jia; Liren Liu
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A structure similar to the direct detection of the DPSK signals using polarization dependent free space Mach-Zehnder interferometer is set up to validate its ability for coherent ranging. M sequence is adopted for its superior performance in code compression. The resultant signal voltage is sampled instead of being zero crossing detected and cross-correlated with the modulation signal sampled at the same rate. The ranging peak appears in the one target setup after proper calibration of the interferometric bias point but doesn’t imply any correct range information. For the two range resolved targets, the output image doesn’t depict two independent peaks. The further study is being conducted.

Paper Details

Date Published: 4 September 2015
PDF: 9 pages
Proc. SPIE 9617, Unconventional Imaging and Wavefront Sensing 2015, 96170I (4 September 2015); doi: 10.1117/12.2185777
Show Author Affiliations
Guangyu Cai, Shanghai Institute of Optics and Fine Mechanics (China)
Jianfeng Sun, Shanghai Institute of Optics and Fine Mechanics (China)
Ning Zhang, Shanghai Institute of Optics and Fine Mechanics (China)
Guangyuan Li, Shanghai Institute of Optics and Fine Mechanics (China)
Guo Zhang, Shanghai Institute of Optics and Fine Mechanics (China)
Yucheng Jia, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 9617:
Unconventional Imaging and Wavefront Sensing 2015
Jean J. Dolne; Thomas J. Karr; Victor L. Gamiz, Editor(s)

© SPIE. Terms of Use
Back to Top