IJBTT

Sidelobes Reduction Technique for Biphase Barker Codes

Sidelobes Reduction Technique for Biphase Barker Codes
	© 2021 by IJETT Journal
	Volume-69 Issue-6
	Year of Publication : 2021
	Authors : S. P. Singh, T. D. Bhatt
	DOI :  10.14445/22315381/IJETT-V69I6P234

How to Cite?

S. P. Singh, T. D. Bhatt "Sidelobes Reduction Technique for Biphase Barker Codes," International Journal of Engineering Trends and Technology, vol. 69, no. 6, pp. 239-242, 2021. Crossref, https://doi.org/10.14445/22315381/IJETT-V69I6P234

Abstract
In radar and sonar communications, Barker codes are extensively used for pulse compression. High range resolution radar requires high pulse compression ratio to detect and resolve the desired target in dense clutter environment. This paper proposes a radar signal design technique in which biphase Barker codes are modulated with Discrete Frequency Coding (DFC). The proposed technique improves pulse compression ratio and also reduces the pulse compression sidelobes. The Modified Genetic Algorithm (MGA) is used for optimizing discrete frequency coded Barker codes. DFC coded Barker signals exhibit good pulse compression ratio and minimum peak sidelobe level. Complex signal structure of DFC modulated signal is very difficult to analyze by enemy Electronic Support Measures (ESM).

Keywords
Autocorrelation, Barker codes, Discrete Frequency Code, High resolution, Modified Genetic Algorithm.

Reference
[1] Bauderon, M., and Laubie,F, searching for weakly autocorrelated binary sequences., Applied Algebra, Algebric Algorithms and error correcting codes., New York: Springer-Verlag, 25-34, (1988).
[2] N. Levanon, and E. Mozeson, Radar signals, Wiley, New York, 2004.
[3] S.P Singh, E.N.V. Purna Chandra Rao, and T D Bhatt Orthogonal Forty Eight Phase Sequences design using MGA, International Conference on Innovations in Electronics and Communication Engineering (ICIECE-14), Hyderabad, India, 2014.
[4] E.N.V. Purna Chandra Rao and S.P Singh, Side Lobes Reduction Technique for Binary Code, International Journal of Advanced Science and Technology, Vol. 29, No.4, (2020), ISSN: 2005-4238 IJAST , pp.7992 – 8001.
[5] S.P Singh, and SS Rao Binary Sequences Design Using MGA, International Journal of Computational Intelligence Research, ISSN 0973-1873, 6(4) (2010) 531–540.
[6] H. Deng, Synthesis of binary sequences with good autocorrelation and cross correlation properties by simulated annealing, IEEE Transactions on Aerospace and Electronic Systems, 1996.
[7] H. Deng, Discrete frequency – coding waveform design for netted radar systems, IEEE Signal Process. Lett., 2004, 11(2) 179– 182.
[8] S. P Singh, K Subba Rao, Discrete Frequency Coding Waveform Design,(2007) 14th IEEE International Conference on Electronics, Circuits and Systems, 2007.
[9] S. P. Singh, and K. Subba Rao, Discrete Frequency Coded Radar signal Design, IET Journal of signal processing U.K., Vol 3, issue 1,Print ISSN 1751-9675, Online ISSN 1751-9683 (2009) 7-16.
[10] Kai Liu and Shangkai Gao, Searching Binary Sequences for Coded Excitation in Medical Ultrasound, 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, Shanghai, China, (2005) 1858-1860, doi: 10.1109/IEMBS.2005.1616812.
[11] G. E. Coxson and J. C. Russo, Shared-Autocorrelation Binary Codes Found by Exhaustive Search, in IEEE Transactions on Aerospace and Electronic Systems, 55(6) (2019) 3578-3586, doi: 10.1109/TAES.2019.2908711.
[12] B. C. Flores, V. Kreinovich, and R. Vasquez, Signal Design for Radar Imaging in Radar Astronomy: Genetic Optimization. In: D. Dasgupta, Z. Michalewicz, (eds) Evolutionary Algorithms in Engineering Applications, Springer, Berlin, Heidelberg, 1997.