空军工程大学学报（自然科学版）2016，Vol.17Issue(5)：48-52,5.DOI:10.3969/j.issn.1009-3516.2016.05.009
时频分布的BP SK瞬时带宽及编码识别
BPSK Instantaneous Bandwidth and Code Recognition Based on Time Frequency Distribution
摘要
Abstract
Aimed at the problem that binary phase shift keying (BPSK)has 180°phase jump phenomenon, and the traditional definition of instantaneous bandwidth can't reflect the frequency properties of the BPSK. This paper defines the instantaneous bandwidth of BPSK as the second order central moments of time fre-quency distribution,derives the instantaneous bandwidth of the expression,and obtains the mutation peak value of the instantaneous bandwidth of the phase transition point to the actual interception BPSK genera-ted envelope gap phenomenon.The paper utilizes the envelope gap for realizing the identification of coding mode of BPSK by using threshold detection,and analyzes the influence of the signal related parameters on the depth of envelope gap.The simulation results verify the correctness of the theoretical analysis.关键词
二相编码信号/瞬时带宽/突变峰值/包络缺口/编码识别Key words
binary phase shift keying/instantaneous bandwidth/mutation peak/envelope gap/coded iden-tification分类
电子信息工程引用本文复制引用
王宇宙,徐忠伟..时频分布的BP SK瞬时带宽及编码识别[J].空军工程大学学报（自然科学版）,2016,17(5):48-52,5.基金项目
航空科学基金(20145596025,20152096019) （20145596025,20152096019）
