| 基于循环前缀的相位编码OFDM雷达多普勒频移估计和补偿 |
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| 引用本文： | 赵晶晶, 霍凯, 刘永祥, 杨小琪. 基于循环前缀的相位编码OFDM雷达多普勒频移估计和补偿[J]. 电子与信息学报, 2017, 39(4): 938-944. doi: 10.11999/JEIT160549 |
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| 作者姓名： | 赵晶晶 霍凯 刘永祥 杨小琪 |
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| 基金项目： | 国家自然科学基金(61501481, 61422114)，湖南省杰出青年基金(2015JJ1003) |
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| 摘 要： | 相位编码正交频分复用(PC-OFDM)雷达是近年来新体制雷达研究热点之一。该雷达信号对正交多载频进行相位调制，同时具有距离、多普勒高分辨。然而，PC-OFDM雷达对多普勒频偏较为敏感，该文研究了PC-OFDM雷达基于循环前缀(CP)对多普勒频偏进行估计，并基于估计值对频偏进行补偿，再进行脉冲压缩。仿真实验证明，该文方法能有效改善多普勒频偏所带来的1维距离像结构破坏和旁瓣抬升。
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| 关 键 词： | 相位编码OFDM雷达 多载频 多普勒频偏估计 循环前缀 |
| 收稿时间： | 2016-05-28 |
| 修稿时间： | 2016-12-13 |
Cyclic Prefix Based Phase-coded OFDM Radar Doppler Offset Estimation and Compensation |
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| ZHAO Jingjing, HUO Kai, LIU Yongxiang, YANG Xiaoqi. Cyclic Prefix Based Phase-coded OFDM Radar Doppler Offset Estimation and Compensation[J]. Journal of Electronics & Information Technology, 2017, 39(4): 938-944. doi: 10.11999/JEIT160549 |
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| Authors: | ZHAO Jingjing HUO Kai LIU Yongxiang YANG Xiaoqi |
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| Abstract: | Phase-Coded Orthogonal Frequency Division Multiplexing (PC-OFDM) radar has drawn wide attention in high resolution radar application. This kind of radar signal transmits orthogonal sub-carriers phase-modulated by specific sequences and has range and Doppler high resolution at the same time. Considering its sensitivity to Doppler offset, this paper derives the pulse compression method of PC-OFDM radar, and based on Cyclic Prefix (CP), a Doppler offset estimation and compensation algorithm is proposed. Several simulations verify the effectiveness of the method in improving High Resolution Range Profile (HRRP) with Doppler offset. |
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| Keywords: | Phase-coded OFDM radar Multi-carrier Doppler offset estimation Cyclic prefix |
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