基于散射点增强的太赫兹目标指向估计网络
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国防科技大学 电子科学学院,湖南 长沙 410073

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李芷晴(2000?),女,在读博士研究生,主要研究方向为太赫兹目标散射特性与深度学习.email:799706123@ qq.com.
曾 旸(1989?),男,博士,副教授,主要研究方向为太赫兹频段目标特性.
邓 彬(1981?),男,博士,副研究员,主要研究方向为太赫兹雷达成像.
杨 琪(1989?),男,博士,副教授,主要研究方向为太赫兹频段目标特性、太赫兹雷达技术及应用、空间目标成像与识别.
王宏强(1970?),男,博士,研究员,博士生导师,主要研究方向为雷达目标探测与成像、太赫兹技术.

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Scattering-point-enhanced network of terahertz target attitude estimation
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College of Electronic Science and Technology, National University of Defense Technology,Changsha Hunan 410073,China

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    摘要:

    抛物面天线可实现远距离、高精确度的信号收发,因此在通信领域应用广泛。近年来,由于逆合成孔径雷达(ISAR)图像几何参数(如抛物面天线指向)提取技术的进步,抛物面天线在空间态势感知中备受关注。然而,如何精准高效地估计抛物面天线的姿态,仍是一项重大挑战。针对当前抛物面特性提取不充分的问题,本文提出一种融合散射点增强与Transformer的ISARAngleNet方法,通过在残差网络(ResNet)残差块中加入专用的散射点增强模块,提取天线的鲁棒性特征;同时引入Transformer模型,弥补ResNet网络在全局建模上的不足;最后通过融合双路径姿态回归和散射点平滑约束的损失函数,网络能更精准地捕捉角度与散射特征间的复杂关系。通过暗室实验验证,本方法在抛物面天线数据集上姿态估计相比标准ResNet网络的均方根误差(RMSE)和平均绝对误差(MAE)分别提高了32.85%和24.5%,证明了该方法的优越性。

    Abstract:

    Parabolic antennas enable long-distance, high-precision signal transmission and reception, making them widely used in the field of communications. In recent years, parabolic antennas have gained significant attention in space situational awareness applications due to advances in extraction techniques for geometric parameters(such as antenna pointing direction) from Inverse Synthetic Aperture Radar(ISAR) images. However, accurately and efficiently estimating the attitude of parabolic antennas remains a major challenge. Addressing the insufficient extraction of parabolic characteristics in current approaches, this paper proposes ISARAngleNet, a network that integrates scattering point enhancement with Transformer architecture. The method incorporates specialized scattering point enhancement modules within ResNet(Residual Network) residual blocks to extract robust antenna features, while introducing a Transformer model to overcome ResNet's limitations in global feature modeling. Additionally, we develop a loss function that combines dual-path attitude regression with scattering point smoothness constraints, enabling the network to better capture complex relationships between angular and scattering features. The anechoic chamber experiments demonstrate that, compared to the standard ResNet network, the proposed method achieves improvements of 32.85% and 24.5% in RMSE(Root Mean Square Error) and MAE(Mean Absolute Error), respectively, on the parabolic antenna datasets, thereby validating its superiority.

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李芷晴,曾旸,邓彬,等.基于散射点增强的太赫兹目标指向估计网络[J].太赫兹科学与电子信息学报,2026,24(2):242~250. DOI:10.11805/TKYDA2025261.
LI Zhiqing, ZENG Yang, DENG Bin, et al. Scattering-point-enhanced network of terahertz target attitude estimation[J]. Journal of Terahertz Science and Electronic Information,2026,24(2):242-250. DOI:10.11805/TKYDA2025261.

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  • 收稿日期:2025-08-29
  • 最后修改日期:2025-10-26
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  • 在线发布日期: 2026-04-02
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