电子学报2017，Vol.45Issue(6)：1288-1293,6.DOI:10.3969/j.issn.0372-2112.2017.06.002
一种改进的FMCW雷达线性调频序列波形
A Modified Chirp Sequence Waveform for FMCW Radar
摘要
Abstract
FMCW(Frequency Modulated Continuous Wave)radar with chirp sequence waveform is widely used in automotive applications.To resolve Doppler ambiguities in multi-target environment,we modify the classical chirp sequence waveform by adding a period of time delay before each chirp with even sequence number.The modified waveform is essentially a combination of two classical chirp sequences,one is composed of all the chirps with even sequence numbers,and the other one is composed of all the chirps with odd sequence numbers.The time delays in the modified waveform generate a phase difference between two beat signal groups corresponding to the two chirp sequences.Doppler ambiguities are resolved by the phase difference.Theoretical analysis and simulation results verify the effectiveness of the modified waveform.关键词
调频连续波雷达/汽车防撞雷达/线性调频序列波形/多目标/多普勒模糊/二维FFTKey words
frequency modulated continuous wave(FMCW)radar/automotive radar/chirp sequence waveform/multi-target/Doppler ambiguity/two-dimensional FFT分类
信息技术与安全科学引用本文复制引用
王元恺,肖泽龙,许建中,吴礼..一种改进的FMCW雷达线性调频序列波形[J].电子学报,2017,45(6):1288-1293,6.基金项目
国家自然科学基金(No.61301213,No.61501234) （No.61301213,No.61501234）
江苏省自然科学基金(No.SBK20130768) （No.SBK20130768）
