航空学报 > 2026, Vol. 47 Issue (6): 332546-332546   doi: 10.7527/S1000-6893.2025.32546

基于正交时频空调制的雷达嵌入式通信方法

李保国, 曾久林(), 鹿旭   

  1. 国防科技大学 电子科学学院,长沙 410073
  • 收稿日期:2025-07-10 修回日期:2025-09-01 接受日期:2025-10-22 出版日期:2025-11-06 发布日期:2025-10-24
  • 通讯作者: 曾久林 E-mail:381298907@qq.com
  • 基金资助:
    国家自然科学基金(62271494)

Radar-embedded communication based on orthogonal time-frequency-space modulation

Baoguo LI, Jiulin ZENG(), Xu LU   

  1. College of Electronic Science and Technology,National University of Defense Technology,Changsha 410073,China
  • Received:2025-07-10 Revised:2025-09-01 Accepted:2025-10-22 Online:2025-11-06 Published:2025-10-24
  • Contact: Jiulin ZENG E-mail:381298907@qq.com
  • Supported by:
    National Natural Science Foundation of China(62271494)

摘要:

为解决雷达嵌入式通信在双选择性衰落信道中可靠性急剧下降的问题,提出了一种基于正交时频空调制的雷达嵌入式通信方法。通过模型构建、收发模块设计将REC与OTFS相结合,实现OTFS在REC通信中的应用。提出了基于抗扰动导频设计的通信信息嵌入方法,较好提升REC通信信息携带效率。提出波形匹配与符号检测相结合的接收方法,可在保持波形抗截获性能的同时有效提升通信可靠性。经过理论分析和仿真验证,该方法可在信杂比低于-25 dB条件下误码率达到10-2以下,具备良好误码率性能,为提升REC技术在未来工程应用中的可行化程度提供有益探索。

关键词: 雷达嵌入式通信, 双选择性衰落信道, 正交时频空调制, 通信可靠性, 抗截获性能

Abstract:

To address the issue of the sharp decline in reliability of Radar-Embedded Communication (REC) over doubly selective fading channels, an Orthogonal Time-Frequency-Space (OTFS) modulation based REC method is proposed. First, REC is integrated with OTFS to enable the application of OTFS in REC communication systems through model construction and transceiver module design. Second, a communication information embedding method based on anti-interference pilot design is proposed, which significantly improves the information carrying efficiency of REC communication. Third, a reception method combining waveform matching and symbol detection is developed, which effectively enhances communication reliability while maintaining the anti-interception performance of the waveform. Simulation results demonstrate that the proposed method achieves excellent Signal Error Rate (SER) performance below 10-2 under Signal-to-Clutter Ratio (SCR) lower than -25 dB, demonstrating excellent bit error rate performance. This work provides valuable insights for enhancing the feasibility of REC technology in future engineering applications.

Key words: radar-embedded communication, doubly selective fading channel, orthogonal time-frequency-space modulation, communication reliability, anti-interception performance

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