基于循环前缀的相位编码OFDM雷达多普勒频移估计和补偿

赵晶晶; 霍凯; 刘永祥; 杨小琪

doi:10.11999/JEIT160549

基于循环前缀的相位编码OFDM雷达多普勒频移估计和补偿

doi: 10.11999/JEIT160549

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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- 被引次数: 0
出版历程
- 收稿日期: 2016-05-28
- 修回日期: 2016-12-13
- 刊出日期: 2017-04-19

Cyclic Prefix Based Phase-coded OFDM Radar Doppler Offset Estimation and Compensation

Funds:

The National Natural Science Fundation of China (61501481, 61422114), The Natural Science Fundation for Distinguished Yong Scholars of Hunan Province (2015JJ1003)

摘要

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。
- 相位编码OFDM雷达 /
- 多载频 /
- 多普勒频偏估计 /
- 循环前缀
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.
- Phase-coded OFDM radar /
- Multi-carrier /
- Doppler offset estimation /
- Cyclic prefix

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参考文献(21)

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