| 摘要: |
| 随着各种智能化系统的飞速发展，车载雷达通信一体化应用也在智能交通领域占据重要地位。本文设计了一种MFSK与FMCW相结合的雷达通信共用波形，能兼容目前市场主流的FMCW雷达，并将FMCW信号作为MFSK信号的载波，在不影响雷达基本功能的前提下实现通信。在一个雷达CPI内，用MFSK调制通信信号会改变共用信号的相位，不同符号之间将出现相位跳变的情况，使雷达的相干积累不能保持在同一频点处，从而导致测速不准确。本文采用多普勒尺度变换与相位补偿相结合的方式，对一体化回波信号进行处理，保证了多普勒能在同一频点处积累，并给出了仿真结果与相关问题的分析。 |
| 关键词: 多进制频移键控 调频连续波 车载传感通信 共用波形设计 |
| DOI：DOI:10.3969/j.issn.1672-2337.2022.02.014 |
| 分类号:TN911.7 |
| 基金项目:教育部重点实验室2020年开放基金项目（No.CRKL200105） |
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| MFSK-FMCW Signal Processing Technology for Joint Radar Communication |
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ZHANG Yige， ZHENG Lin， YANG Chao
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School of Information and Communication,Guilin University of Electronic Technology, Guilin 541004, China
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| Abstract: |
| With the rapid development of various intelligent systems, the integrated application of vehicle-mounted radar communication plays an important role in the field of intelligent transportation. In this paper, a common radar communication waveform combining MFSK and FMCW is designed, which is compatible with the current mainstream FMCW radar in the market. FMCW signal is used as the carrier of MFSK signal, so as to realize communication without affecting the basic functions of radar. In a radar CPI, MFSK modulation communication signal will change the phase of the common signal, and phase jump will occur between different symbols, so that the coherent accumulation of radar can not be kept at the same frequency point, resulting in inaccurate velocity measurement. In this paper, the integrated echo signal is processed by the combination of Doppler scaling transform and phase compensation, which ensures that Doppler can be accumulated at the same frequency point. The simulation results and the analysis of related problems are given. |
| Key words: multiple frequency-shift keying(MFSK) frequency modulated continuous wave(FMCW) vehicle sensor communication joint waveform design |
