Results 171 to 180 of about 9,233 (214)

SLOPE: A monotonic algorithm to design sequences with good autocorrelation properties by minimizing the peak sidelobe level

Digital Signal Processing, 2021
Abstract Sequences with low autocorrelation sidelobes has applications in various fields like wireless communications, radar, sonar, cryptography to name a few. In this paper, we propose an approach to construct sequences, in particular unimodular sequences, by directly minimizing the peak sidelobe level (PSL) metric.
R. Jyothi, Prabhu Babu, Mohammad Alaee-Kerahroodi   +2 more
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Designing Unimodular Sequence With Low Peak of Sidelobe Level of Local Ambiguity Function

IEEE Transactions on Aerospace and Electronic Systems, 2019
This paper considers the problem of designing unimodular sequence with low peak of sidelobe level of local ambiguity function. The optimization problem is difficult because of the mixed nonconvex unimodulus and highly nonlinear fourth-order polynomial-like constraints.
Yang Jing, Junli Liang, Bo Tang, Jian Li
openaire   +1 more source

Graph Traversal Applied to Search for Optimal Minimum Peak Sidelobe Level Binary Sequences

2019 IEEE International Conference on Signal, Information and Data Processing (ICSIDP), 2019
Binary sequences with low aperiodic autocorrelation levels are widely used in improving the ability of anti-intercept and detection of small targets of radar systems. Searching for optimal binary sequences is an intractable problem due to its extremely high complexity.
Yi Yang, Wei Ren, Yuanyuan Song, Hao Li
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Steepest descent method for minimizing the peak sidelobe level of hopped-frequency waveform

2017 IEEE Radar Conference (RadarConf), 2017
Hopped-frequency waveform achieves high range resolution by transmitting a burst of narrowband pulses spanning the desired bandwidth. As its frequencies are irregularly or even sparsely distributed, hopped-frequency waveform could obtain a wider bandwidth with fixed pulses number and shows stronger anti-jamming ability than the linear stepped-frequency
Dehua Zhao, Yinsheng Wei, Yongtan Liu
openaire   +1 more source

Synthesis of linear antenna array using genetic algorithm to reduce peak sidelobe level

2015 9th International Conference on Electrical and Electronics Engineering (ELECO), 2015
In antenna design, it is important to optimize the amplitude weights of a linear antenna array to achieve low peak sidelobe level (PSLL). This paper deals with a linear inequality constraint on array factor to get maximum response in look direction and reduced sidelobe levels in a specified stop band region.
Amina Khalid, Shahzad Amin Sheikh, Ijteba Ul Hasnain Shah, Qasim Umar Khan   +3 more
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Bounding the Peak Sidelobe Level of Binary Sequences of All Lengths

IEEE Transactions on Information Theory, 2016
Improving upon 2010 results of Alon et al. , it was shown in 2014 by Schmidt that asymptotically, almost all binary sequences of length $n$ have peak sidelobe level close to $({2n\log n})^{1/2}\vphantom {\sum ^{R^{R}}}$ . One specific result of Alon et al.
openaire   +1 more source

A New Search for Optimal Binary Arrays with Minimum Peak Sidelobe Levels

2005
The group structure of the 2-dimensional sidelobe-invariant transformations for binary arrays is characterized. The design of an efficient exhaustive backtracking search algorithm, which exploits such group structure to reduce the search space and, in the meantime, applies the partially determined autocorrelation values as backtracking conditions, is ...
Ramakrishna, Gummadi S., Mow, Wai Ho
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Mitigating Peak Sidelobe Levels in Pulse Compression Radar using Artificial Neural Networks

Indian Journal of Artificial Intelligence and Neural Networking
In this paper, Artificial Neural Networks (ANNs) are being considered to obtain low sidelobe pattern for binary codes and thereby to improve the performance of pulse compression radar. Pulse compression is a popular technique used for improving range resolution in the radar systems. This paper proposes a new approach for Pulse Compression using various
Raja Rajeswari Konduri, Nagireddi Roopavathi, Balantrapu Vijaya Lakshmi, Putrevu Venkata Krishna Chaitanya   +3 more
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Thinning algorithm for reducing peak sidelobe levels of discrete rectangular planar arrays

1988 IEEE AP-S. International Symposium, Antennas and Propagation, 2003
The proposed thinning algorithm provides a low-cost approach to control peak sidelobe levels of a uniformly fed antenna array in the transmit mode. The algorithm quantizes a desired taper to be used on a uniformly spaced planar array and evaluates the feasibility of thinning the array by terminating elements.
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Phase-Only Control of Peak Sidelobe Level and Pattern Nulls Using Iterative Phase Perturbations

IEEE Antennas and Wireless Propagation Letters, 2019
Minimization of the maximum sidelobe level for a given array geometry, amplitude distribution, and nulling sectors by phase-only adjustment of the element coefficients is studied. Nonlinear optimization problem for phase distribution is solved using a novel iterative convex optimization algorithm, which includes mutual coupling effects and exploits ...
Yanki Aslan, Jan Puskely, Antoine Roederer, Alexander Yarovoy   +3 more
openaire   +3 more sources