Performance Evaluation of Barker Codes using New Pulse Compression Technique

Kiranmai, B.; Kumar, Preetam

doi:10.5120/18869-0417

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…In the present work, a novel method for sidelobe cancellation at the output of matched filter of Barker coded signals is introduced. The proposed method achieved a PSLR of 320 dB which is considered as an optimum value compared to 111.8 dB for (R-G-7)LP [10] and much less in complexity of realization compared to the five stages of modified mismatched filter [4]. The Proposed technique has enhanced the detection of weak nearby targets in multiple target detection compared to standard matched filter.…”

Section: Resultsmentioning

confidence: 99%

A novel sidelobe cancellation method for Barker code pulse compression

Elbardawiny¹,

Sobhy²,

Ahmed³

et al. 2018

Eng. Sci. and Milit. Techno.

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Barker Phase coded signals are one of the most effective technique used in pulse compression radars. The main problem of using these signals is the existence of sidelobes at the output of the matched filter. These sidelobes mask nearby weak targets. Also, it degrades the overall detection performance. In the present work, a novel method to totally remove these sidelobes is presented rather than conventional sidelobes reduction methods. The superior of the proposed method is evaluated through the Receiver Operation Characteristic (ROC) curve and simulated in case of single or multiple targets scenarios.

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Section: Resultsmentioning

confidence: 99%

A novel sidelobe cancellation method for Barker code pulse compression

Elbardawiny¹,

Sobhy²,

Ahmed³

et al. 2018

Eng. Sci. and Milit. Techno.

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“…3 (10) where A,B,C,D are coefficients of the (R-G) filter. So the filter transfer function with m coefficients is called as (R-G-m) stage filter.…”

Section: B R-g Filtermentioning

confidence: 99%

A Novel Sidelobe Cancellation Method for Binary Barker Code Pulse Compression

Elbardawiny¹,

Sobhy²,

Ahmed³

et al. 2017

International Conference on Aerospace Sciences and Aviation Tec

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Study of the corrective ability of sync codes for the matched processing decoder

et al. 2018

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Increase of the operation reliability of the frame synchronization schemes of communication systems affected by interferences might be achieved by using sync sequences optimal according to the minimax criterion and having the best ratio of the maximum side-lobe level to the main peak of the non-periodic autocorrelation function. Obviously, the longer the minimax sequence, the higher its correction ability. However, with the increase in the length of the sync code, a conflict arises between the corrective ability and the speed of data transfer. This is caused by the decrease in the duration of the information section of the frame. At the same time, as the length of the code increases, the complexity of the technical implementation of the decoder synchronization scheme increases as well. This means that when developing an information transmission system, it is necessary to find a compromise between the complexity of the technical implementation of the decoder and the required noise immunity. To solve this problem, it is necessary to study the correcting ability of binary sync codes. The purpose of this work was to study the correcting ability of binary sequences with good non-periodic auto-correlation properties using a reception scheme with matched processing. This article discusses the possibility of using Barker sequences of lengths 7, 11, and 13 and M-sequences as corrective sync codes. The authors carry out an analysis of the correcting ability of the decoder model with matched processing for Barker codes of different lengths under the conditions of a one, two, and threefold error. Analytical expressions have been obtained to determine the decoding error probability of a binary minimax code depending on the length of the sync code. The dependence of the corrective ability of the code and the maximum level of the side lobe on the length of the sync code in the range from 4 to 128 with the best nonperiodic autocorrelation functions (NPAF) is obtained. It has been established that there are length ranges for minimax sequences within which their correction ability remains constant, that is, a sync code of shorter length has the same correction ability as a longer code. Thus, the research results allow us to optimize the complexity of the technical implementation of a sync signal decoder depending on the requirements for general noise immunity and information transfer rate in a communication system. The proposed approach can be successfully used to modify the existing synchronization schemes of communication systems with code division of channels.

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Performance Evaluation of Barker Codes using New Pulse Compression Technique

Cited by 4 publications

References 6 publications

A novel sidelobe cancellation method for Barker code pulse compression

A novel sidelobe cancellation method for Barker code pulse compression

A Novel Sidelobe Cancellation Method for Binary Barker Code Pulse Compression

Study of the corrective ability of sync codes for the matched processing decoder

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