Article(id=1253997367414419972, tenantId=1146029695717560320, journalId=1251234736404742242, issueId=1253997366797857283, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1672-2337.2025.05.001, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1747065600000, receivedDateStr=2025-05-13, revisedDate=1753027200000, revisedDateStr=2025-07-21, acceptedDate=null, acceptedDateStr=null, onlineDate=1776905870535, onlineDateStr=2026-04-23, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776905870535, onlineIssueDateStr=2026-04-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776905870535, creator=13041195026, updateTime=1776905870535, updator=13041195026, issue=Issue{id=1253997366797857283, tenantId=1146029695717560320, journalId=1251234736404742242, year='2025', volume='23', issue='5', pageStart='473', pageEnd='590', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1776905870387, creator=13041195026, updateTime=1777355497251, updator=13041195026, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1255883238690702048, tenantId=1146029695717560320, journalId=1251234736404742242, issueId=1253997366797857283, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1255883238690702049, tenantId=1146029695717560320, journalId=1251234736404742242, issueId=1253997366797857283, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=473, endPage=481, ext={EN=ArticleExt(id=1253997367657689606, articleId=1253997367414419972, tenantId=1146029695717560320, journalId=1251234736404742242, language=EN, title=Joint Magnitude-Time-Frequency Generative Modeling of Sea Clutter Using VAE-WGAN, columnId=null, journalTitle=Radar Science and Technology, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To address the limitations of traditional statistical models in simulating the time-frequency characteristics of sea clutter, a sea clutter data generation method based on an enhanced generative adversarial network (GAN) is proposed in this paper. The complex sea clutter is decomposed into amplitude and time-frequency components, which are separately fed into a variational autoencoder-Wasserstein generative adversarial network (VAE-WGAN) for training. The outputs are then integrated to synthesize complex signals with both amplitude and phase characteristics. To enhance the model performance, a gradient penalty mechanism is introduced to constrain the Lipschitz continuity of the discriminator, effectively mitigating the mode collapse. A self-attention module is incorporated to strengthen the model’s ability to capture localized strong scattering features, such as sea spikes, significantly improving the spatiotemporal correlation of generated signals. Experiments cover sea states 2~5, with three datasets of dimensions[64,64], [128,128], and[256,256]constructed for each sea state. Twelve cross-validation trials demonstrate that the synthetic data exhibit high consistency with measured data in amplitude distribution, normalized spectrum, temporal correlation, and time-frequency characteristics. These results validate the model’s generalization capability across varying sea states and multiscale temporal scenarios.
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针对传统统计模型在模拟海杂波时频特性中的局限性,本文提出了一种基于改进生成对抗网络(Generative Adversarial Network,GAN)的海杂波数据生成方法。通过将复数海杂波分解为幅度和时频分量,分别输入变分自编码器-沃瑟斯坦生成对抗网络(Variational Autoencoder-Wasserstein Generative Adversarial Network,VAE-WGAN)进行训练,利用VAE的潜在空间编码和WGAN的稳定对抗训练融合生成复杂幅度分布与时变特性、并兼具幅度与相位特性的复数信号。为增强模型性能,引入梯度惩罚机制约束鉴别器Lipschitz连续性,有效缓解模式崩溃问题;集成自注意力模块强化对海尖峰(Sea Spikes)等局部强散射特征的捕捉能力,显著提升生成信号的时空相关性。实验设计覆盖2~5级海况,每级海况分别构建[64,64]、[128,128]、[256,256]三组数据集,共完成12组交叉验证,结果表明,生成数据在幅度分布、归一化频谱、时间相关性及时频特性上与实测数据高度一致,验证了模型对跨海况场景与变尺度时序数据的泛化能力。
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刘宁波 男,博士,教授,主要研究方向为雷达信号智能处理、海上目标探测技术。
刘新亮 男,硕士研究生,主要研究方向为海杂波仿真和特征分析。
董云龙 男,博士,教授,主要研究方向为多传感器信息融合、雷达目标检测与跟踪。
丁昊 男,博士,副教授,主要研究方向为海杂波特性认知与抑制、海杂波中目标检测。
关键 男,博士,教授,主要研究方向为雷达信号处理、海上目标探测检测。
孙殿星 男,博士,副研究员,主要研究方向为机动目标跟踪、信息融合。
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| 生成网络 | 2级海况 | 3级海况 | 4级海况 | 5级海况 | 运行时间/s |
|---|
| GAN | 76.6% | 90.6% | 96.9% | 89.1% | 100 |
| DCGAN | 76.6% | 89.1% | 93.8% | 84.4% | 135 |
| WGAN | 81.3% | 93.8% | 98.4% | 90.6% | 140 |
| VAE | 82.8% | 90.6% | 96.9% | 93.8% | 180 |
| VAE-WGAN | 90.6% | 93.8% | 98.4% | 95.3% | 140 |
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| 生成网络 | 2级海况 | 3级海况 | 4级海况 | 5级海况 | 运行时间/s |
|---|
| GAN | 76.6% | 90.6% | 96.9% | 89.1% | 100 |
| DCGAN | 76.6% | 89.1% | 93.8% | 84.4% | 135 |
| WGAN | 81.3% | 93.8% | 98.4% | 90.6% | 140 |
| VAE | 82.8% | 90.6% | 96.9% | 93.8% | 180 |
| VAE-WGAN | 90.6% | 93.8% | 98.4% | 95.3% | 140 |
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| 生成网络 | 2级海况 | 3级海况 | 4级海况 | 5级海况 | 运行时间/s |
|---|
| GAN | 81.3% | 86.7% | 85.9% | 89.8% | 200 |
| DCGAN | 82% | 87.5% | 88.3% | 90.6% | 215 |
| WGAN | 83.6% | 93.8% | 94.5% | 93.7% | 300 |
| VAE | 82.8% | 91.4% | 92.9% | 94.5% | 280 |
| VAE-WGAN | 92.2% | 98.4% | 96.9% | 94.5% | 270 |
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| 生成网络 | 2级海况 | 3级海况 | 4级海况 | 5级海况 | 运行时间/s |
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| GAN | 81.3% | 86.7% | 85.9% | 89.8% | 200 |
| DCGAN | 82% | 87.5% | 88.3% | 90.6% | 215 |
| WGAN | 83.6% | 93.8% | 94.5% | 93.7% | 300 |
| VAE | 82.8% | 91.4% | 92.9% | 94.5% | 280 |
| VAE-WGAN | 92.2% | 98.4% | 96.9% | 94.5% | 270 |
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| 生成网络 | 2级海况 | 3级海况 | 4级海况 | 5级海况 | 时间/s |
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| GAN | 84% | 84.8% | 84.4% | 82.4% | 2000 |
| DCGAN | 64.8% | 76.2% | 81.6% | 73.8% | 575 |
| WGAN | 82.8% | 83.2% | 86.7% | 85.5% | 1150 |
| VAE | 83.6% | 83.6% | 91.4% | 84.8% | 800 |
| VAE-WGAN | 93.8% | 95.7% | 93.8% | 94.5% | 920 |
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| 生成网络 | 2级海况 | 3级海况 | 4级海况 | 5级海况 | 时间/s |
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| GAN | 84% | 84.8% | 84.4% | 82.4% | 2000 |
| DCGAN | 64.8% | 76.2% | 81.6% | 73.8% | 575 |
| WGAN | 82.8% | 83.2% | 86.7% | 85.5% | 1150 |
| VAE | 83.6% | 83.6% | 91.4% | 84.8% | 800 |
| VAE-WGAN | 93.8% | 95.7% | 93.8% | 94.5% | 920 |
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