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Proceedings Paper

Laser pulse coded signal frequency measuring device based on DSP and CPLD
Author(s): Hai-bo Zhang; Li-hua Cao; Ai-hui Geng; Yan Li; Ru-hai Guo; Ting-feng Wang
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Paper Abstract

Laser pulse code is an anti-jamming measures used in semi-active laser guided weapons. On account of the laser-guided signals adopting pulse coding mode and the weak signal processing, it need complex calculations in the frequency measurement process according to the laser pulse code signal time correlation to meet the request in optoelectronic countermeasures in semi-active laser guided weapons. To ensure accurately completing frequency measurement in a short time, it needed to carry out self-related process with the pulse arrival time series composed of pulse arrival time, calculate the signal repetition period, and then identify the letter type to achieve signal decoding from determining the time value, number and rank number in a signal cycle by Using CPLD and DSP for signal processing chip, designing a laser-guided signal frequency measurement in the pulse frequency measurement device, improving the signal processing capability through the appropriate software algorithms. In this article, we introduced the principle of frequency measurement of the device, described the hardware components of the device, the system works and software, analyzed the impact of some system factors on the accuracy of the measurement. The experimental results indicated that this system improve the accuracy of the measurement under the premise of volume, real-time, anti-interference, low power of the laser pulse frequency measuring device. The practicality of the design, reliability has been demonstrated from the experimental point of view.

Paper Details

Date Published: 19 August 2011
PDF: 9 pages
Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 81920R (19 August 2011); doi: 10.1117/12.899165
Show Author Affiliations
Hai-bo Zhang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Li-hua Cao, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Ai-hui Geng, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Yan Li, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Ru-hai Guo, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Ting-feng Wang, Changchun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 8192:
International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging
Farzin Amzajerdian; Weibiao Chen; Chunqing Gao; Tianyu Xie, Editor(s)

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