Results 31 to 40 of about 122 (113)

Modification of Synthetic Filtered Output for PSL Reduction in DFT‐Spread OFDM MIMO Radar Using Doppler‐Tolerant Extended Space‐Time Coding

Electronics Letters, Volume 62, Issue 1, January/December 2026.
We propose a Doppler‐tolerant DFT‐spread orthogonal time‐coded OFDM (DSS‐OTC‐OFDM) waveform for MIMO radar that maintains orthogonality under Doppler shifts while enabling flexible code design. An optimisation framework is developed to minimise peak sidelobe level (PSL) and suppress cross‐correlation after matched filtering across a range of Doppler ...
Ata Nokhostin Roohi, Hossein Soleimani, Mohammad Soleimani   +2 more
wiley   +1 more source

Processing and Resolution Losses Due to Range Cell Migration—Application to Automotive Radar

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This study analyzes how range cell migration (RCM) affects pulse compression and Doppler processing in high‐resolution radar systems. Theoretical models including RCM effects are developed for both pulse and frequency‐modulated continuous wave (FMCW) radar. Resolution and processing losses are quantified for FMCW, linearly frequency‐modulated (LFM) and
Adrien Grivey, Kevin Cinglant, Fabrice Comblet, Ali Khenchaf   +3 more
wiley   +1 more source

An Efficient LSEF‐Based Algorithm for Binary Phase‐Coded MIMO Radar Waveform Design

Electronics Letters, Volume 61, Issue 1, January/December 2025.
An efficient log‐sum‐exp‐function‐based algorithm for binary phase‐coded sequence design achieves competitive peak sidelobe level performance with reduced computational complexity in both single‐ and multi‐waveform scenarios. ABSTRACT This letter presents an efficient algorithm for designing binary phase‐coded sequences with low peak sidelobe level ...
Jiahui Cao, Jinping Sun, Guohua Wang, Yuxi Zhang, Wenguang Wang, Jun Wang   +5 more
wiley   +1 more source

Design of Integrated Waveform for Detection and Cover Based on Maximum Value Constraint

Electronics Letters, Volume 61, Issue 1, January/December 2025.
This paper proposes a method for designing integrated waveform with excellent autocorrelation and interference properties. The generated waveform not only achieves a low peak sidelobe level but also introduces controllable false targets to deceive non‐cooperative radars.
Haoting Guo, Fulai Wang, Nanjun Li, Runlong Peng, Chen Pang, Yun Ren, Yongzhen Li   +6 more
wiley   +1 more source

Design of Spectrally Compatible Waveforms With Low Auto‐ and Cross‐Correlation‐Weighted Integrated Sidelobe Levels

IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.
In this paper, we propose the BSUM‐MM algorithm to design spectrally compatible waveforms for MIMO radar systems with low sidelobes. Numerical experiments demonstrate that our algorithm outperforms similar methods in terms of both ACWISL and computational efficiency. ABSTRACT Low‐correlation sidelobes are critical for spectrally compatible waveforms in
Zhaobo Jia, Lei Yu, Yinsheng Wei
wiley   +1 more source

Smart Binary Phase‐Coding With Doppler Compensation: An Electronic Protection Technique Against Repeater Jamming

IET Signal Processing, Volume 2025, Issue 1, 2025.
Today, modern radar systems increase their target detection capabilities by processing pulses coherently. If these radars do not take precautions against the Doppler frequency shift caused by the moving target, their performance will decrease. In addition, if these radars do not change their parameters from pulse to pulse, modern jammers will cause ...
Alper Yildirim, Serkan Kiranyaz, Junmo Kim   +2 more
wiley   +1 more source

Convolution of Barker and Golay Codes for Low Voltage Ultrasonic Testing

Technologies, 2019
Ultrasonic Testing (UT) is one of the most important technologies in Non-Detective Testing (NDT) methods. Recently, Barker code and Golay code pairs as coded excitation signals have been applied in ultrasound imaging system with improved quality. However,
Zeng Fan, John Rudlin, Giorgos Asfis, Hongying Meng   +3 more
doaj   +1 more source

Optimum Radar Signal for Production Zone Monitoring of the Oil Well

Journal of Sensors, Volume 2025, Issue 1, 2025.
A primary challenge in radar‐based oil well monitoring is designing an optimized transmitter signal to identify perforations in the production zone. Effective signal design depends on signal‐to‐noise ratio (SNR) and range resolution, based on the frequency response of the well, to accurately detect perforations in the oil well.
Sajjad Kaveh, Yaser Norouzi, HamidReza Dalili Oskouei, GholamReza Moradi, Pramita Mishra   +4 more
wiley   +1 more source

Optically Delaying a Radio Frequency–Linear Frequency-Modulated (RF-LFM) Pulse Using Kerr Comb Carriers and Off-the-Shelf Concatenation of a Linearly Chirped Fiber Bragg Grating and a Chirped-and-Sampled Fiber Bragg Grating

Photonics
We demonstrate a low latency delay of a radio frequency (RF)–linear frequency-modulated (LFM) pulse by modulating it onto optical carriers from a Kerr comb and sending the signal through a concatenation of off-the-shelf linearly chirped fiber Bragg ...
Ahmed Almaiman, Yinwen Cao, Peicheng Liao, Alan Willner, Moshe Tur   +4 more
doaj   +1 more source

Analyzing Pulse Compression Performance and Image Quality Metrics of Different Excitations in MAET With Magnetic Field Measurements

International Journal for Numerical Methods in Biomedical Engineering, Volume 40, Issue 12, December 2024.
The study explores pulse compression technique to enhance the performance of magneto‐acousto‐electrical tomography (MAET) with magnetic field measurements, utilizing a linear phased array transducer and numerical breast models with tumor inclusion. It provides feasibility and a comparative analysis of linear frequency modulated (LFM), Barker code, and ...
Mehmet Soner Gözü, Nevzat Güneri Gençer   +1 more
wiley   +1 more source