雷达科学与技术2013，Vol.11Issue(1)：77-81,86,6.DOI:10.3969/j.issn.1672-2337.2013.01.014
MIMO雷达OFDM-LFM波形设计与实现
Design for MIMO Radar and Implementation of OFDM-LFM Waveform
摘要
Abstract
Waveform design is crucial for MIMO radar that transmits mutually orthogonal waveforms. Based on the characteristics of transmitted orthogonal waveforms, the design principles of the orthogonal frequency division multiplexing linear frequency modulationC OFDM-LFM) signals are introduced. In this paper a new realization scheme is presented where multi-channel frequency division linear frequency modulation signals are used to generate OFDM-LFM signals. We design a waveform generator composed of a host computer, a waveform control module, and a digital intermediate frequency synthesis module. The method for forming single-channel linear frequency modulation signal based on the digital ramp modulation mode of AD9910 and the method for forming multi-channel chirp signal based on the OSK function of AD9910 are introduced and the linearity of the single-channel LFM signal is analyzed. Finally, the experimental results of the two-channel LFM signal spectrum and the time domain waveform of one channel chirp signal are presented to verify the correctness and feasibility of the method.关键词
多输入多输出(MIMO)/正交频分复用/线性调频/波形设计/AD9910Key words
multiple-input multiple-output(MIMO)/ orthogonal frequency division multiplexing/ linear frequency modulation/ waveform design/ AD9910分类
信息技术与安全科学引用本文复制引用
陈正辉,严济鸿,何子述..MIMO雷达OFDM-LFM波形设计与实现[J].雷达科学与技术,2013,11(1):77-81,86,6.
