Method for suppressing range sidelobes of bistatic integrated sensing and communication signal based on LFM

JI Chenxing; LI Peng; ZHANG Tianxiang; GAO Yulong

doi:10.11959/j.issn.2096-3750.2025.00472

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Method for suppressing range sidelobes of bistatic integrated sensing and communication signal based on LFM

Theory and Technology | 更新时间：2025-09-12

- Method for suppressing range sidelobes of bistatic integrated sensing and communication signal based on LFM
- Chinese Journal on Internet of Things Vol. 9, Issue 2, Pages: 127-138(2025)
- 作者机构：
  
  1.哈尔滨工业大学电子与信息工程学院，黑龙江哈尔滨 150001
  2.北京遥测技术研究所，北京 100076
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(62171163);The Aeronautical Science Foundation of China(2024M038077001)
- DOI：10.11959/j.issn.2096-3750.2025.00472
  CLC： TN911
- Received：20 December 2024，
  
  Revised：2025-02-16，
  
  Published：10 June 2025
- 稿件说明：
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季晨星,李澎,张天祥等.基于LFM的双基地通感一体化信号距离旁瓣抑制方法[J].物联网学报,2025,09(02):127-138.

JI Chenxing,LI Peng,ZHANG Tianxiang,et al.Method for suppressing range sidelobes of bistatic integrated sensing and communication signal based on LFM[J].Chinese Journal on Internet of Things,2025,09(02):127-138.
季晨星,李澎,张天祥等.基于LFM的双基地通感一体化信号距离旁瓣抑制方法[J].物联网学报,2025,09(02):127-138. DOI： 10.11959/j.issn.2096-3750.2025.00472.

JI Chenxing,LI Peng,ZHANG Tianxiang,et al.Method for suppressing range sidelobes of bistatic integrated sensing and communication signal based on LFM[J].Chinese Journal on Internet of Things,2025,09(02):127-138. DOI： 10.11959/j.issn.2096-3750.2025.00472.

摘要

通感一体化技术旨在缓解通信系统与雷达系统在频带资源上的冲突，在未来的6G中应用前景广阔。双基地场景下，通感一体化系统具有对抗强电磁干扰环境、高隐蔽性的优势。在现有的关于双基地场景下基于线性调频信号的通感一体化系统的设计中，因为雷达感知受到了内嵌通信信息的影响，存在距离旁瓣过高、虚假目标识别严重的问题。为了在正确完整提取通信信息的前提下，抑制其产生的旁瓣干扰，提升雷达感知性能，以基于线性调频（LFM

linear frequency modulation）的通感一体化系统为基础进行优化研究，以调制方式和接收机结构为切入点，提出了减相调制和接收机结构优化两种创新方法，并结合模糊函数和误码率这两种性能指标，通过仿真分析对比，验证了优化方法的可行性和有效性。

Abstract

Integrated sensing and communication (ISAC) technology aims to alleviate the conflict between communication systems and radar systems over frequency band resources

presenting broad prospects in future 6G. In bistatic scenarios

ISAC systems offer advantages such as resistance to strong electromagnetic interference environments and high concealment. In the existing design of ISAC systems based on linear frequency modulation (LFM) signals in bistatic scenarios

issues such as excessively high range sidelobes and severe false target identification arise

primarily because the radar sensing is affected by the embedded communication information. In order to suppress the sidelobe interference while ensuring the accurate and complete extraction of communication information

thereby enhancing radar sensing performance

the optimization based on an integrated communication and sensing system utilizing LFM was studied. Focusing on modulation schemes and receiver architecture as key points of investigation

two innovative methods were proposed: phase reduction modulation and receiver structure optimization. By employing performance metrics such as ambiguity function and bit error rate

and through comparative simulation analysis

the feasibility and effectiveness of the optimization methods were verified.

关键词

Keywords

references

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