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Статті в журналах з теми "Coded waveform"

Автор: Grafiati

Опубліковано: 14 вересня 2024

Оновлено: 31 липня 2025

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1

Bharadwaj, N., and V. Chandrasekar. "Phase Coding for Range Ambiguity Mitigation in Dual-Polarized Doppler Weather Radars." Journal of Atmospheric and Oceanic Technology 24, no. 8 (2007): 1351–63. http://dx.doi.org/10.1175/jtech2061.1.

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Abstract This paper evaluates the retrieval of polarimetric variables when phase-coded waveforms are employed to suppress range overlaid echoes. A phase-coded waveform tags transmitted pulses with a phase code and then decodes the received signal to separate the overlaid echoes. Two methods suggested for separating overlaid echoes use random and systematic phase-coding techniques. In this paper, random phase and systematic phase-coded waveforms are evaluated for dual-polarized operation. The random phased-coded and systematic phase-coded waveforms are known to provide fairly good estimates of

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2

Yongqiang, Guo, Wu Yumin, and Liu Hui. "Construction of Waveform Library in Cognitive Radar." Polish Maritime Research 24, s2 (2017): 22–29. http://dx.doi.org/10.1515/pomr-2017-0060.

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Abstract Based on the thoughts of cognitive radar, Fractional Fourier Transform (FrFT) is used to generate a rotatable waveform libraries of Frank coded/Barker coded waveform in this paper. Then, the ambiguity function is used to analyze the delay resolution, Doppler resolution, delay side-lobe level, and Doppler side-lobe level of the waveform libraries and orthogonality of them is also analyzed. Furthermore, we proved theoretically that there is a fixed coordinate transformation between the waveforms of library and its origin waveform. Therefore, the Cramér-Rao low bound (CRLB) of motion par

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3

Wang, Pengpeng, Zhan Wang, Peng You, and Mengyun An. "Algorithm for Designing Waveforms Similar to Linear Frequency Modulation Using Polyphase-Coded Frequency Modulation." Remote Sensing 16, no. 19 (2024): 3664. http://dx.doi.org/10.3390/rs16193664.

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Linear frequency modulation (LFM) waveforms have been widely adopted due to their excellent performance characteristics, such as good Doppler tolerance and ease of physical implementation. However, LFM waveforms suffer from high autocorrelation sidelobes (ACSLs) and limited design flexibility. Phase-coded frequency modulation (PCFM) waveforms can be used to design waveforms similar to LFM, offering greater design flexibility to optimize ACSLs. However, it has been found that the initial PCFM waveform experiences spectral expansion during the ACSL optimization process, which reduces its similar

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4

Liu, Tianqu, Jinping Sun, Guohua Wang, Xianxun Yao, and Yaqiong Qiao. "Optimal Design of Group Orthogonal Phase-Coded Waveforms for MIMO Radar." Mathematics 12, no. 6 (2024): 903. http://dx.doi.org/10.3390/math12060903.

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Digital radio frequency memory (DRFM) has emerged as an advanced technique to achieve a range of jamming signals, due to its capability to intercept waveforms within a short time. multiple-input multiple-output (MIMO) radars can transmit agile orthogonal waveform sets for different pulses to combat DRFM-based jamming, where any two groups of waveform sets are also orthogonal. In this article, a group orthogonal waveform optimal design model is formulated in order to combat DRFM-based jamming by flexibly designing waveforms for MIMO radars. Aiming at balancing the intra- and intergroup orthogon

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5

Hong, Sheng, Yantao Dong, Rui Xie, Yu Ai, and Yuhao Wang. "Constrained Transmit Beampattern Design Using a Correlated LFM-PC Waveform Set in MIMO Radar." Sensors 20, no. 3 (2020): 773. http://dx.doi.org/10.3390/s20030773.

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This paper considers the design of a desired transmit beampattern under the good ambiguity function constraint using a correlated linear frequency modulation-phase coded (LFM-PC) waveform set in multiple-input-multiple-output (MIMO) radar. Different from most existing beampattern design approaches, we propose using the LFM-PC waveform set to conquer the challenging problem of synthesizing waveforms with constant-envelope and easy-generation properties, and, meanwhile, solve the hard constraint of a good ambiguity behaviour. First, the ambiguity function of the LFM-PC waveform set is derived, a

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6

Lei, Wei, Yue Zhang, Zengping Chen, Xiaolong Chen, and Qiang Song. "Spatial–Temporal Joint Design and Optimization of Phase-Coded Waveform for MIMO Radar." Remote Sensing 16, no. 14 (2024): 2647. http://dx.doi.org/10.3390/rs16142647.

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By simultaneously transmitting multiple different waveform signals, a multiple-input multiple-output (MIMO) radar possesses higher degrees of freedom and potential in many aspects compared to a traditional phased-array radar. The spatial–temporal characteristics of waveforms are the key to determining their performance. In this paper, a transmitting waveform design method based on spatial–temporal joint (STJ) optimization for a MIMO radar is proposed, where waveforms are designed not only for beam-pattern matching (BPM) but also for minimizing the autocorrelation sidelobes (ACSLs) of the spati

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7

Chang, Shaoqiang, Fawei Yang, Zhennan Liang, Wei Ren, Hao Zhang, and Quanhua Liu. "Slow-Time MIMO Waveform Design Using Pulse-Agile-Phase-Coding for Range Ambiguity Mitigation." Remote Sensing 15, no. 13 (2023): 3395. http://dx.doi.org/10.3390/rs15133395.

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This paper proposed a Pulse-Agile-Phase-Coding slow-time MIMO (PAPC-st-MIMO) waveform, where the phase-coded signal is utilized as the intra-pulse modulation of the slow-time MIMO waveform. Firstly, the signal model of the proposed waveform is derived. To improve the orthogonality of the phase-coded waveform sets, a novel hybrid evolutionary algorithm based on Cyclic Algorithm New (CAN) is proposed. After the optimization process of the phase-coded waveform sets, the signal processing method of the PAPC-st-MIMO waveform is derived. Finally, the effectiveness of the proposed method is verified

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8

Meng, Huadong, Yimin Wei, Xuhua Gong, Yimin Liu, and Xiqin Wang. "Radar Waveform Design for Extended Target Recognition under Detection Constraints." Mathematical Problems in Engineering 2012 (2012): 1–15. http://dx.doi.org/10.1155/2012/289819.

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We address the problem of radar phase-coded waveform design for extended target recognition in the presence of colored Gaussian disturbance. Phase-coded waveforms are selected since they can fully exploit the transmit power with sufficient variability. An important constraint, target detection performance, is considered to meet the practical requirements. The waveform is designed to achieve maximum recognition performance under a control on the achievable signal-to-noise ratio (SNR) of every possible target hypothesis. We formulate the code design in terms of a nonconvex, NP-hard quadratic opt

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9

Yan, Huabin, Shiyuan Zhang, Xingyu Lu, et al. "A Waveform Design for Integrated Radar and Jamming Based on Smart Modulation and Complementary Coding." Remote Sensing 16, no. 15 (2024): 2725. http://dx.doi.org/10.3390/rs16152725.

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Waveform design for integrated radar and jamming is generally based on the concept of shared waveform, which uses jamming signals without typical radar signal characteristics for detection. Existing waveforms have shown limited design flexibility, high levels of sidelobe in detection results, and overall ordinary performance. We propose an integrated radar and jamming waveform based on smart modulation and complementary coding. Unlike traditional integrated radar and jamming waveform based on smart modulation, the phase angle of the binary phase-coded sequence is adjustable in this smart modul

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10

Duan, Tong, Hong Liang, Zezhou Dai, and Lei Yue. "High-Resolution Wideband Waveform Design for Sonar Based on Multi-Parameter Modulation." Remote Sensing 15, no. 18 (2023): 4603. http://dx.doi.org/10.3390/rs15184603.

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The design of transmitting waveforms is an effective way to improve the detection performance of sonar systems. For the problem of high-range sidelobe when designing reverberation-resistant waveforms, this paper proposes a high-resolution wideband composite waveform design with reverberation suppression performance and a waveform parameter improvement method. Firstly, we propose a novel wideband waveform, which utilizes linear frequency modulation (LFM) as the fundamental pulse, referred to as multi-parameter coded modulation LFM pulse (MPCM-LFM). Additionally, we deduce the wideband ambiguity

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11

Vierinen, Juha, Jorge L. Chau, Nico Pfeffer, Matthias Clahsen, and Gunter Stober. "Coded continuous wave meteor radar." Atmospheric Measurement Techniques 9, no. 2 (2016): 829–39. http://dx.doi.org/10.5194/amt-9-829-2016.

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Abstract. The concept of a coded continuous wave specular meteor radar (SMR) is described. The radar uses a continuously transmitted pseudorandom phase-modulated waveform, which has several advantages compared to conventional pulsed SMRs. The coding avoids range and Doppler aliasing, which are in some cases problematic with pulsed radars. Continuous transmissions maximize pulse compression gain, allowing operation at lower peak power than a pulsed system. With continuous coding, the temporal and spectral resolution are not dependent on the transmit waveform and they can be fairly flexibly chan

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12

Kim, Dong-Hoon, Hyung-Jung Kim, and Jae-Han Lim. "Design of Optimized Coded LFM Waveform for Spectrum Shared Radar System." Sensors 21, no. 17 (2021): 5796. http://dx.doi.org/10.3390/s21175796.

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To meet the increasing demands for remote sensing, a number of radar systems using Linear Frequency Modulation (LFM) waveforms have been deployed, causing the problem of depleting frequency resources. To address this problem, several researchers have proposed the Spectrum Shared Radar System (SSRS) in which multiple radars share the same frequency band to transmit and receive their own signals. To mitigate the interferences caused by the signal transmission by other radars, SSRS employs orthogonal waveforms that inherit the orthogonality of the waveforms from orthogonal codes. However, the inh

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13

Zhang, J. D., X. H. Zhu, and H. Q. Wang. "Adaptive radar phase-coded waveform design." Electronics Letters 45, no. 20 (2009): 1052. http://dx.doi.org/10.1049/el.2009.1099.

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14

Kumari Chilukuri, Raja, Hari Kishore Kakarla, and K. Subba Rao. "Radar Signal Recognition Based on Multilayer Perceptron Neural Network." International journal of electrical and computer engineering systems 14, no. 1 (2023): 29–36. http://dx.doi.org/10.32985/ijeces.14.1.4.

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Low Probability of Intercept (LPI) radars are developed on an advanced architecture by making use of coded waveforms. Detection and classification of radar waveforms are important in many critical applications like electronic warfare, threat to radar and surveillance. Precise estimation of parameter and classification of the type of waveform will provide information about the threat to the radar and also helps to develop sophisticated intercept receiver. The present work is on classification of modulation waveforms of LPI radar using multilayer perceptron neural (MLPN) network. The classificat

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15

Cai, Long, Xiao Chuan Ma, She Feng Yan, and Qi Xu. "On Orthogonal Waveform Design for MIMO Radar." Advanced Materials Research 181-182 (January 2011): 422–28. http://dx.doi.org/10.4028/www.scientific.net/amr.181-182.422.

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MIMO radar system that transmits orthogonal waveforms is an emerging technology that has significant application potential. Compared to traditional phased-array radar, orthogonal transform waveform can bring many advantages. In this paper, we present a novel binary phase code sequence suitable for orthogonal design. This phase code sequence is computationally efficient compared to other algorithms previously proposed in the literature. We provide some numerical examples to demonstrate the performances of the coded pulse signal.

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16

Xi, Rongyan, Dingyou Ma, Xiang Liu, Lei Wang, and Yimin Liu. "Intra-Pulse Frequency Coding Design for a High-Resolution Radar against Smart Noise Jamming." Remote Sensing 14, no. 20 (2022): 5149. http://dx.doi.org/10.3390/rs14205149.

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Smart noise jamming forms active jamming by intercepting, modulating, and forwarding radar signals into the radar receiver, which seriously affects the radar range recovery performance. In this paper, we propose a novel waveform design approach and an efficient range recovery method for high-resolution radar in the jamming scenario. Firstly, we propose an intra-pulse frequency-coded frequency-modulated continuous waveform (IPFC-FMCW), which contains multiple FMCW chips with different widths and frequencies, to combat the smart noise jamming. After the jamming suppression, the proposed waveform

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17

Kamble, Jayshree, I. A Pasha, and M. Madhavilatha. "Poly-phase signal generation and optimizationof LPI Radar: A new approach." International Journal of Engineering & Technology 7, no. 2.6 (2018): 147. http://dx.doi.org/10.14419/ijet.v7i2.6.10141.

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Low Probability of Intercept (LPI) Radar own certain positive characteristics make them nearly undetectable by Intercept Receivers. In a battle field, this present a considerable strategic problem. New digital receivers required complex signal processing techniques to detect these types of Radar. This paper address the problem of constructing a new hybrid waveform design using Poly-Phase modulation technique to optimize the detection performance of LPI Radar. Phase coded Pulse compression waveforms using Frequency Hopping Spread Spectrum (FHSS) are designed to evaluate the detection performanc

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18

Chandrasekar, V., and Nitin Bharadwaj. "Orthogonal Channel Coding for Simultaneous Co- and Cross-Polarization Measurements." Journal of Atmospheric and Oceanic Technology 26, no. 1 (2009): 45–56. http://dx.doi.org/10.1175/2008jtecha1101.1.

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Abstract Dual-polarization weather radars typically measure the radar reflectivity at more than one polarization state for transmission and reception. Historically, dual-polarization radars have been operated at copolar and cross-polar states defined with respect to the transmit polarization states. Recently, based on the improved understanding of the propagation properties of electromagnetic waves in precipitation media, the simultaneous transmit and receive (STAR) mode has become common to simplify the hardware. In the STAR mode of operation, horizontal and vertical polarization states are t

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19

Walenczykowska, Marta, and Adam Kawalec. "Application of Continuous Wavelet Transform and Artificial Naural Network for Automatic Radar Signal Recognition." Sensors 22, no. 19 (2022): 7434. http://dx.doi.org/10.3390/s22197434.

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This article aims to propose an algorithm for the automatic recognition of selected radar signals. The algorithm can find application in areas such as Electronic Warfare (EW), where automatic recognition of the type of intra-pulse modulation or the type of emitter operation mode can aid the decision-making process. The simulations carried out included the analysis of the classification possibilities of linear frequency modulated pulsed waveform (LFMPW), stepped frequency modulated pulsed waveform (SFMPW), phase coded pulsed waveform (PCPW), rectangular pulsed waveforms (RPW), frequency modulat

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20

Hornbostel, Scott C., and A. H. Thompson. "Waveform design for electroseismic exploration." GEOPHYSICS 72, no. 2 (2007): Q1—Q10. http://dx.doi.org/10.1190/1.2436473.

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In earlier work, we described field tests that successfully detected electromagnetic-to-seismic (ES) conversions from gas sands and carbonate reservoirs. ES conversion amplitudes measure the electric properties of permeable rock with near-seismic resolution. This information is a new indicator of hydrocarbons. ES conversions produce small seismic responses. Detecting these signals requires high-power electromagnetic sources and high-sensitivity detectors. Extraction of signal from noise also requires sophisticated signal processing. Here, we describe coded waveforms of binary sequences optimiz

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21

Tian, Xuanxuan, Tingting Zhang, Qinyu Zhang, and Zhaohui Song. "HRR Profiling on Integrated Radar-Communication Systems Using OFDM-PCSF Signals." Mathematical Problems in Engineering 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/5357187.

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In order to improve both the transmission data rate and the range resolution simultaneously in integrated radar-communication (RadCom) systems, orthogonal frequency-division multiplexing with phase-coded and stepped-frequency (OFDM-PCSF) waveform is proposed. A corresponding high resolution range (HRR) profile generation method is also presented. We first perform OFDM-PCSF waveform design by combining the intrapulse phase coding with the interpulse stepped-frequency modulation. We then give the ambiguity function (AF) based on the presented waveforms. Then, the synthetic range profile (SRP) pr

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22

Liu, Tianqu, Jinping Sun, Guohua Wang, and Yilong Lu. "A Multi-Objective Quantum Genetic Algorithm for MIMO Radar Waveform Design." Remote Sensing 14, no. 10 (2022): 2387. http://dx.doi.org/10.3390/rs14102387.

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Aiming at maximizing waveform diversity gain when designing a phase-coded multiple-input multiple-output (MIMO) radar waveform set, it is desirable that all waveforms are orthogonal to each other. Hence, the lowest possible peak cross-correlation ratio (PCCR) is expected. Meanwhile, low peak auto-correlation side-lobe ratio (PASR) is needed for good detection performance. However, it is difficult to obtain a closed form solution to the waveform set from the expected values of the PASR and PCCR. In this paper, the waveform set design problem is modeled as a multi-objective, NP-hard constrained

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23

Gao, Hao, and Xu Dong Zhang. "Automatic Radar Waveform Recognition Using SVM." Applied Mechanics and Materials 229-231 (November 2012): 2348–51. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.2348.

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In this paper, a new feature for radar waveform recognition based on the instantaneous frequency is proposed. It is especially utilized for discriminating phase coded signals from other signals. Maximum likelihood estimation (MLE), autocorrelation algorithm, and likelihood ratio test are exploited in the algorithm. In the classification system, support vector machine (SVM) offers an efficient approach to classify linear frequency modulation (LFM) signals, phase coded signals and single frequency signals. Simulation results indicate that the new feature vectors perform effectively over a large

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24

Cheng, Sheng-Juan, Wen-Qin Wang, and Huai-Zong Shao. "Spread Spectrum-Coded OFDM Chirp Waveform Diversity Design." IEEE Sensors Journal 15, no. 10 (2015): 5694–700. http://dx.doi.org/10.1109/jsen.2015.2448617.

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25

Xu, Lei, Qilian Liang, Xiaorong Wu, and Baoju Zhang. "Phase Coded Waveform Design for Sonar Sensor Network." Mobile Networks and Applications 18, no. 2 (2012): 215–21. http://dx.doi.org/10.1007/s11036-012-0352-8.

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26

Wang, Charles C., and Dean J. Sklar. "Metric transformation for a turbo-coded DPSK waveform." Wireless Communications and Mobile Computing 3, no. 5 (2003): 609–16. http://dx.doi.org/10.1002/wcm.144.

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27

Priya, Bhanu, and Jyoteesh Malhotra. "Error Rate Performance of Potential Multicarrier Waveforms and Coding Techniques for 5G." International Journal of Sensors, Wireless Communications and Control 10, no. 2 (2020): 231–47. http://dx.doi.org/10.2174/2210327909666190409130000.

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Background: The wisdom of future wireless communication is clearly highlighted by the gigabit experience, low latency and the three fold rises in the capacity, compared to the 4th Generation networks. To meet such an ambitious objective of the 5th Generation communication systems, efficient use of non-contiguous unused spectrum is required. The panacea to this issue lies in the symbiosis of multicarrier waveforms and coding schemes. Methods: To study the interaction between these two, several multicarrier waveforms like Filtered- OFDM (F-OFDM), Universal Filtered Multi-Carrier (UFMC) and Weigh

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28

Wang, Xiaoge, Binbin Li, Hui Chen, et al. "Interrupted-Sampling Repeater Jamming Countermeasure Based on Intrapulse Frequency–Coded Joint Frequency Modulation Slope Agile Waveform." Remote Sensing 16, no. 15 (2024): 2810. http://dx.doi.org/10.3390/rs16152810.

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Interrupted-sampling repeater jamming (ISRJ) is widely used in the field of electronic countermeasures, and can severely affect radar detection. Therefore, the problem of ISRJ suppression is a compelling task. In this paper, we propose an ISRJ suppression method based on an intrapulse frequency-coded joint frequency modulation (FM) slope agile waveform. The intrapulse frequency-coded joint FM slope agile waveform is first designed. The delay inserted between subpulses makes the waveform easy to implement in engineering, and the ambiguity function diagram of the waveform approximates the ideal

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29

Luo, Zhi-Tao, Peng Shen, Hao Luo, Sheng Wang, Xin-Kai Wu, and Hui Zhang. "Advanced orthogonal frequency and phase modulated waveform for contrast-enhanced photothermal wave radar thermography." Journal of Applied Physics 131, no. 22 (2022): 224903. http://dx.doi.org/10.1063/5.0087734.

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Thermal wave radar (TWR) thermography is a high-efficient nondestructive testing technique to increase the signal-to-noise ratio (SNR) and to enhance target detection capability. However, the detection of subsurface defects, especially small-size defects, usually requires a distinctively high SNR and depth resolvability. This paper proposed an orthogonal phase-coded linear frequency modulated (OPCLFM) excitation waveform, which has significantly improved the SNR and depth resolvability of TWR compared to the LFM waveform. The pulse compression quality of the OPCLFM waveform was initially evalu

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30

Yang, Wei Dong, Li Li, and Kai Peng. "Realization of Low Frequency Wakeup in Tire Encoded Radio Frequency Identification System." Applied Mechanics and Materials 556-562 (May 2014): 2895–98. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.2895.

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In car tires coded identification system, radio frequency technology plays a vital role, the key to radio frequency signals transmitted process is waveform modulation. The key of adjusting the waveform is how to match its resistor and capacitor easily. In the paper their resistance and capacitance values are optimized by using the simulation software (Protues) to simulate the transmitted waveform, and based on matching results the optimized physical models are produced. The actual test results agree well with the simulation results. The method of simulation tests can save the resources effecti

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31

Yucel, Mehmet K., Sina Fateri, Mathew Legg, et al. "Coded Waveform Excitation for High-Resolution Ultrasonic Guided Wave Response." IEEE Transactions on Industrial Informatics 12, no. 1 (2016): 257–66. http://dx.doi.org/10.1109/tii.2015.2501762.

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32

Moharir, P. S., V. M. Maru, and R. Singh. "Bi-parental product algorithm for coded waveform design in radar." Sadhana 22, no. 5 (1997): 589–99. http://dx.doi.org/10.1007/bf02802547.

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33

Zhu, Sha, Kunpeng Zhai, Wei Li, and Ning Hua Zhu. "Stimulated-Brillouin-scattering-based arbitrarily phase coded microwave waveform transmitter with anti-dispersion transmission." Chinese Optics Letters 20, no. 8 (2022): 083901. http://dx.doi.org/10.3788/col202220.083901.

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34

Shang, Pingping, Hyein Lee, and Sooyoung Kim. "Waveform Design for Space–Time Coded MIMO Systems with High Secrecy Protection." Electronics 9, no. 12 (2020): 2003. http://dx.doi.org/10.3390/electronics9122003.

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In this paper, we present a new secrecy-enhancing scheme for multi-input-multi-output (MIMO) systems using a space–time coding scheme. We adopt a quasi-orthogonal space–time block coding (QO-STBC) scheme that was originally designed to improve the performance of the MIMO system, and propose an efficient waveform design that can enhance the secrecy, as well as improve the error rate performance. Channel- and signal-dependent artificial interference (AI) is added to the proposed waveform, so that only a legitimate receiver can successfully retrieve information. We investigate the secrecy capacit

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35

Xie, Ya Nan, and Jia Jia Wang. "Orthogonal Discrete Frequency-Phase Waveform Design Based on Hybrid Chaos for MIMO Radar." Advanced Materials Research 989-994 (July 2014): 3621–24. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3621.

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Based on the good correlation and randomness of chaos, this paper uses hybrid Bernouli and Logistic chaotic maps to increase the complexity of chaos, at the same time, we do a combination of discrete frequency coded of non full code sets and poly phase coded, and then hybrid modulation waveforms base on hybrid chaos is proposed for MIMO radar. On the basis of the expression of average ambiguity function is derived, the average fuzzy characteristics of signal waveforms and orthogonality are analyzed in theory. Finally, numerical simulation results validate the correctness of the analysis and th

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36

Takayama, Takuya, Masayuki Sugano, Yukinobu Tokieda, and Hiroki Sugawara. "Hybrid SIMO and MIMO sparse array radar." International Journal of Microwave and Wireless Technologies 6, no. 3-4 (2014): 389–95. http://dx.doi.org/10.1017/s1759078714000154.

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This paper clarifies what we benefit from single-input–multiple-output (SIMO) or multiple-input–multiple-output (MIMO) radar. We have developed an X-band sparse array imaging radar system capable of operating at both SIMO and MIMO modes. The hybrid radar modes are realized without any modification in hardware, but simply by switching the scheme of waveform generation and post-processing. A comparison has been made between the SIMO mode adopting a chirp pulse waveform and the MIMO mode based on the code-division multiple access method using the Gold-coded pulse waveform. Mutually complementary

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Guan, Jian, Xiaoqian Mu, Yong Huang, Baoxin Chen, Ningbo Liu, and Xiaolong Chen. "A Space–Time–Range Joint Adaptive Focusing and Detection Method for Multiple Input Multiple Output Radar." Remote Sensing 15, no. 18 (2023): 4509. http://dx.doi.org/10.3390/rs15184509.

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The Multiple Input Multiple Output (MIMO) radar, as a new type of radar, emits orthogonal waveforms, which provide it with waveform diversity characteristics, leading to increased degrees of freedom and improved target detection performance. However, it also poses challenges such as difficulty in meeting higher data demand, separating waveforms, and suppressing the multidimensional sidelobes (range sidelobes, Doppler sidelobes, and angle sidelobes) of targets. Phase-coded signals are frequently employed as orthogonal transmission signals in the MIMO radar. However, these signals exhibit poor D

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38

Won, Yong-Yuk, Heetae Han, Dongmin Choi, and Sang Min Yoon. "Enhancement of Optical Wireless Discrete Multitone Channel Capacity Based on Li-Fi Using Sparse Coded Mask Modeling." Photonics 12, no. 4 (2025): 395. https://doi.org/10.3390/photonics12040395.

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A sparse coded mask modeling technique is proposed to increase the transmission capacity of an optical wireless link based on Li-Fi. The learning model for the discrete multitone (DMT) signal waveform is implemented using the proposed technique, which is designed based on a masked auto-encoder. The entire length of the DMT signal waveform, encoded using quadrature phase shift keying (QPSK) or 16-quadrature amplitude modulation (16-QAM) symbols, is divided into equal intervals to generate DMT patches, which are subsequently compressed based on the specified masking ratio. After 1-meter optical

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39

AJITH., A. S. "SIDE LOBE SUPPRESSION AND LOW PAPR IN PULSE COMPRESSION RADAR USING GAUSSIAN FILTER BASED COSTAS CODING." Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/ Journal of Tianjin University Science and Technology 56, no. 10 (2023): 61–93. https://doi.org/10.5281/zenodo.8433576.

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<strong>Abstract</strong> The abstract presents a novel approach for achieving side lobe suppression and low peak-to-average power ratio (PAPR) in pulse compression-based radar systems using Gaussian filter-based Costas coding. Pulse compression radar relies on coded waveforms to achieve high range resolution and accurate target detection. However, conventional Costas coding techniques may exhibit undesired range side lobes and high PAPR, which can degrade radar performance. To address these issues, we propose the integration of a Gaussian filter into the pulse compression process. The Gaussia

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40

Song, Chunqi, Shanguo Huang, Xinlu Gao, et al. "Photonics Generation of Baseband-Free Arbitrary-Phase-Coded Microwave Waveform Pulse." IEEE Photonics Technology Letters 33, no. 9 (2021): 457–60. http://dx.doi.org/10.1109/lpt.2021.3068384.

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41

Zeng, Xiang-neng, Yong-shun Zhang, Bo Tian, Guo-qing Zhao, and Teng Lei. "Discrete Frequency Code Waveform Based on MicPSO Cooperated with Grefenstette Coded." Journal of Electronics & Information Technology 33, no. 1 (2011): 100–105. http://dx.doi.org/10.3724/sp.j.1146.2010.00244.

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42

Nakanishi, Masaki, Yutaro Tanji, and Toshihisa Tanaka. "Waveform-Coded Steady-State Visual Evoked Potentials for Brain-Computer Interfaces." IEEE Access 9 (2021): 144768–75. http://dx.doi.org/10.1109/access.2021.3120623.

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43

Sheng-Wen Huang and Pai-Chi Li. "Arbitrary waveform coded excitation using bipolar square wave pulsers in medical ultrasound." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 53, no. 1 (2006): 106–16. http://dx.doi.org/10.1109/tuffc.2006.1588396.

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44

Deng, Hong, Jiejun Zhang, Xiang Chen, and Jianping Yao. "Photonic Generation of a Phase-Coded Chirp Microwave Waveform With Increased TBWP." IEEE Photonics Technology Letters 29, no. 17 (2017): 1420–23. http://dx.doi.org/10.1109/lpt.2017.2717698.

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45

Lashkari, Bahman, Kaicheng Zhang, Edem Dovlo, and Andreas Mandelis. "Coded excitation waveform engineering for high frame rate synthetic aperture ultrasound imaging." Ultrasonics 77 (May 2017): 121–32. http://dx.doi.org/10.1016/j.ultras.2017.02.007.

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46

Hassan, A., A. EL Sherif, and K. El Barbary. "COMPUTER OPTIMIZATION OF PHASE CODED WAVEFORM PARAMETERS AND PROCESSOR FOR CLUTTER REJECTION." International Conference on Aerospace Sciences and Aviation Technology 2, CONFERENCE (1987): 1–10. http://dx.doi.org/10.21608/asat.1987.26214.

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47

Vierinen, J., J. L. Chau, N. Pfeffer, M. Clahsen, and G. Stober. "Coded continuous wave meteor radar." Atmospheric Measurement Techniques Discussions 8, no. 7 (2015): 7879–907. http://dx.doi.org/10.5194/amtd-8-7879-2015.

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Abstract. The concept of coded continuous wave meteor radar is introduced. The radar uses a continuously transmitted pseudo-random waveform, which has several advantages: coding avoids range aliased echoes, which are often seen with commonly used pulsed specular meteor radars (SMRs); continuous transmissions maximize pulse compression gain, allowing operation with significantly lower peak transmit power; the temporal resolution can be changed after performing a measurement, as it does not depend on pulse spacing; and the low signal to noise ratio allows multiple geographically separated transm

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48

Rosli, Siti Julia, Hasliza Rahim, Ruzelita Ngadiran, K. N. Abdul Rani, Muhammad Imran Ahmad, and Wee Fwen Hoon. "Design of Binary Coded Pulse Trains with Good Autocorrelation Properties for Radar Communications." MATEC Web of Conferences 150 (2018): 06016. http://dx.doi.org/10.1051/matecconf/201815006016.

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Finite length of sequences that are modulated both in phase and amplitude and have an ideal autocorrelation function (ACF) consisting of merely a pulse have many applications in control and communication systems. They are widely applied in control and communication systems, such as in pulse compression systems for radar and deep-space ranging problems [1-5]. In radar design, the important part is to choose a waveform, which is suitable to be transmitted because the waveform controls resolution in clutter performance. In addition, it can solve a general signal problem particularly related to th

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Tu, Bing, Wei Wang, and Teng Xi Zhan. "Research on Manchester Coded Mud Pulse Signal Extraction." Applied Mechanics and Materials 519-520 (February 2014): 1144–48. http://dx.doi.org/10.4028/www.scientific.net/amm.519-520.1144.

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The mud pulse signal extracting in MWD(Measurement while drilling) was a core technology in the oil drilling developing process. In terms of the extraction and recognition problems of weak mud pulse signal in MWD, this paper analyzed the transmission format of Manchester coded down-hole datum and transmission characteristics of mud pulse signal and used morphological filtering algorithm to extract the mud pulse signal. According to the characteristics of the Manchester coded underground synchronization signal. After determining the location of the signal start time, It proposed a pattern simil

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50

Zahra, A. G., A. Youssef, M. Talha, F. M. Ahmed, and W. Mehany. "Small RCS targets detection based on pulse compression radar signal generator and processor." Journal of Physics: Conference Series 2616, no. 1 (2023): 012035. http://dx.doi.org/10.1088/1742-6596/2616/1/012035.

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Abstract In the last two decades, field programmable gate arrays (FPGAs) have become the leading technology for implementing real time systems, specially radars. The most important advantage of FPGA is its parallel nature of executing complicated algorithms. As a result, the received data flow will be processed in a real time manner, which is suitable for radar applications. This paper attempts to show the design and the FPGA implementation of a binary phase-coded pulse compression radar signal generator and processor, that are intended to determine the ranges, and the speeds of targets with s

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