参数调制多载波雷达通信共享信号设计

杨慧婷; 周宇; 谷亚彬; 张林让

doi:10.12000/JR18001

参数调制多载波雷达通信共享信号设计

DOI: 10.12000/JR18001

西安电子科技大学雷达信号处理国家重点实验室西安 710071

基金项目: 国家自然科学基金(61671361, 61731023, 61601343)

详细信息

作者简介:
杨慧婷(1993–)，女，硕士研究生，主要研究方向为雷达通信一体化。E-mail: yanght06@163.com

周　宇(1978–)，男，副教授，主要研究方向为雷达通信一体化、STAP、雷达抗干扰技术。E-mail: zhouyu@mail.xidian.edu.cn

谷亚彬(1991–)，男，博士研究生，主要研究方向为雷达通信一体化、雷达成像技术。E-mail: yabingu@163.com

张林让(1966–)，男，教授，主要研究方向为阵列信号处理、网络化雷达协同抗干扰技术、雷达成像技术和雷达系统建模与仿真技术。E-mail: lrzhang@xidian.edu.cn

通讯作者:
周宇 zhouyu@mail.xidian.edu.cn

中图分类号: TN95
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出版历程
- 收稿日期: 2018-01-02
- 修回日期: 2018-07-13
- 网络出版日期: 2019-02-28

Design of Integrated Radar and Communication Signal Based on Multicarrier Parameter Modulation Signal

National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China (61671361, 61731023, 61601343)

More Information

Corresponding author: ZHOU Yu, zhouyu@mail.xidian.edu.cn

摘要

摘要: 雷达通信一体化是减少电子平台体积与电磁干扰的一种有效途径，而共享信号的研究是实现雷达通信一体化的关键技术。该文提出了一种基于Chirp信号的多载波雷达通信共享信号，其主载波采用唯一Chirp信号实现雷达功能，副载波通过改变调频率和初始频率参数组合的Chirp信号调制通信信息。分析了共享信号的模糊函数以及参数设计方法，并对其处理过程及系统性能进行了研究。仿真结果表明，该信号具有较低误码率和高稳健性特性，使用该共享信号可在微量降低雷达性能的前提下实现通信数据的传输。
- 雷达通信一体化 /
- 线性调频信号 /
- 多载波信号 /
- 分数阶傅里叶变换
Abstract: Communication signals are vital to the implementation of integrated radar and communication, which is an effective way to reduce platform volume and electromagnetic interference. In this paper, an integrated radar and communication signal based on multicarrier parameter modulation chirp signal is proposed. Its main carrier adopts the unique chirp signal to implement radar function, while communication information is modulated by the subcarrier with different chirp rates and initial frequency chirp signal. The signal property is analyzed by ambiguity function, and the processing and system performance are studied. Finally, simulation results demonstrate that the proposed sharing signal has a low symbol error rate and high robustness, and communication data transmission can be implemented by slightly degrading the radars performance.
- Integrated radar and communication /
- Chirp signal /
- Multicarrier signal /
- FRactional Fourier Transform (FRFT)

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图 1 64进制数据调制

Figure 1. 64 system data modulation

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图 2 共享信号参数设计

Figure 2. Sharing signal parameters design

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图 3 不同阶次FRFT变换图

Figure 3. FRFT graphs of different orders

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图 4 共享信号实现框图

Figure 4. Block diagram of realizing sharing signal

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图 5 FRFT幅度峰值随阶数偏移变化

Figure 5. Change of FRFT amplitude peak with order deviation

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图 6 共享信号的模糊函数图

Figure 6. Ambiguity function of sharing signal

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图 7 主、副载波互相关函数

Figure 7. Cross correlation function of main carrier and subcarrier

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图 8 主副载波功率比9:1时FRFT输出

Figure 8. FRFT output at main and subcarrier power ratio of 9:1

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图 9 脉压结果

Figure 9. Pulse compression result

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图 10 动目标检测结果

Figure 10. MTD result

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图 11 检测概率与信噪比关系曲线

Figure 11. Curve of relationship between detection probability and signal-to-noise ratio

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图 12 误码率随信噪比变化曲线

Figure 12. Change of error rate with SNR

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表 1 主载波与不同主副功率比下共享信号的互相关系数

Table 1. Cross-correlation coefficient of shared signal under different power ratios

主副功率比 s₁₃ s₂₄ s₃₅ s₄₆ s₅₇

1:1 0.7349 0.7456 0.7341 0.7323 0.7672
4:1 0.9082 0.9053 0.9022 0.9015 0.9115
9:1 0.9522 0.9530 0.9519 0.9515 0.9554

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