[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5370/KIEE.2015.64.4.573

Implementation of Digital Signal Processing Board Suitable for a Semi-active Laser Tracking to Detect a Laser Pulse Repetition Frequency and Optimization of a Target Coordinates

Lee, Young-Ju (Dept. of Electronics and Radio Engineering, Kyung Hee University, Korea and R&D Center, Allimsystem Co.,Ltd.)
Kim, Yong-Pyung (Dept. of Electronics and Radio Engineering, Kyung Hee University)

Publication Information

The Transactions of The Korean Institute of Electrical Engineers / v.64, no.4, 2015 , pp. 573-577 More about this Journal

Abstract

In this paper, we propose a signal processing board suitable for a semi-active laser tracking to detect an optical signal generated from the laser target designator by applying an analog trigger signal, the quadrant photodetector and a high speed ADC(analog-digital converter) sampling technique. We improved the stability by applying the averaging method to minimize the measurement error of a gaussian pulse. To evaluate the performances of the proposed methods, we implemented a prototype board and performed experiments. As a result, we implemented a frequency counter with an error 14.9ns in 50ms. PRF error code has a stability of less than 1.5% compared to the NATO standard. Applying the three point averaging method to ADC sampling, the stability of 28% in X-axis and 22% in Y-axis than one point sampling was improved.

Keywords

laser target designator; threshold trigger; high speed ADC; SAL; ZYNQ;

Citations & Related Records

Reference

1	First sensor PIN photo diode data sheet, PS0.25-5, First Sensor AG, 2011.
2	A. Barna, I. B. Folder, Z. Gingl, R. Mingesz, “Compact energy measuring system for short pulse lasers”, Metrology and Measurement Systems, vol. XX, no. 2, pp. 183-190, 2013.
3	H. F. Ghassem Nia, H. Hu, “Applying bayesian decision theory to peak detection of stochastic signals”, 4th Computer Science and Electronic Engineering Conference, pp. 117-122, 2010.
4	http://en.wikipedia.org/wiki/Full_width_at_half_maximum
5	First sensor QP data sheet, QP154-Q, First Sensor AG, 2011.
6	Clifton S. Fox, “Active electro-optical systems”, The infrared & electro-optical system handbook, SPIE Optical Engineering Press, vol. 6, pp. 100-101, 2010.
7	Non-contact position sensing using optical detectors, UDT instruments, 2012.
8	Luke S. Strohm, A terminal guidance model for smart projectiles employing a semi-active laser seeker, US Army Research Laboratory, August 2011.
9	S. C. Kaushik, Advances in contemporary physics and energy, Applied Publishers PVT. Limited, pp. 50-51, 2002.
10	Maj. Roberto Sabatini, Mark A. Richardson, Airborne laser system testing and analysis, Flight Test Techniques Series, vol. 26, 2010.
11	L. Goldberg, J. Nettleton, B. Schilling, W. Trussel, A. Hays, “Compact laser sources for laser designation, ranging and active imaging”, Proc. of SPIE, vol. 6552, April 2007.