计算机工程2017，Vol.43Issue(3)：115-119,125,6.DOI:10.3969/j.issn.1000-3428.2017.03.021
一种延迟偏移的二进制正交线性调频信号调制方法
A Binary Orthogonal Chirp Signal Modulation Method with Delay Offset
摘要
Abstract
In the case of low Time-Bandwidth(TB) product,there are two problems in the Binary Orthogonal Keying(BOK) matching detection,the mutual interference between the positive and negative frequency modulation slope and the large amplitude of the self-matching sidelobe.In order to solve these problems,a new modulation method of delay offset Chirp-BOK is proposed.It reduces the mutual interference between the positive and negative frequency modulation slope signals by adding delay offset between the positive and negative frequency modulation slope symbols,so as to suppress the sidelobe and improve the Peak-to-Side-Lobes Ratio(PSLR).Through the engineering solution and simulation analysis for the best delay offset of this method,results show that,when compared with the commonly used side-lobe suppression method by the weighted window function,this method can dramatically improve the system detection performance without changing the structure of the Chirp matched filter and bandwidth under the condition of low TB product.关键词
线性调频信号/互干扰/旁瓣抑制/时间带宽积/延迟偏移Key words
Chirp signal/mutual interference/sidelobe suppression/Time-Bandwidth(TB) product/delay offset分类
信息技术与安全科学引用本文复制引用
黄世盼,郑霖,杨超,蒋相,黄智昌..一种延迟偏移的二进制正交线性调频信号调制方法[J].计算机工程,2017,43(3):115-119,125,6.基金项目
国家自然科学基金(61362006,61371107) （61362006,61371107）
广西自然科学基金(2014GXNSFBA118288) （2014GXNSFBA118288）
省部共建教育部重点实验室认知无线电基金(2013ZR08) （2013ZR08）
桂林电子科技大学研究生教育计划项目(YJCXS201517). （YJCXS201517）
