一种基于二次预测的虚假相位跳变判别方法  

An Identification Method of False Phase Jump Based on Quadratic Prediction

作　　者：王聪 闫秋飞[1] 徐烨 WANG Cong;YAN Qiu-fei;XU Ye(The 723 Institute of CSIC,Yangzhou 225101,China)

机构地区：[1]中国船舶重工集团公司第七二三研究所,江苏扬州225101

出　　处：《舰船电子对抗》2018年第3期92-95,共4页Shipboard Electronic Countermeasure

摘　　要：在低信噪比的情况下,利用基于瞬时频率的脉内分析方法会计算出错误的瞬时相位。提出了一种基于二次预测的虚假相位跳变判别方法,该方法能够解决由噪声引起的相位虚假跳变问题。仿真实验表明使用基于二次预测的虚假相位跳变判别方法可以有效提高雷达信号脉内调制特征识别的正确率。Under the low signal-to-noise ratio condition,erroneous instantaneous phase may be calculated by using the method of pulse internal analysis based on the instantaneous frequency.This paper presents an identifying method of false phase jump based on quadratic prediction,which can solve the problem of false phase jump due to the noise.The simulative experiments show that the identifying method of false phase jump based on quadratic prediction can effectively improve the correct rate of feature identification in pulse internal modulation for radar signal.

关 键 词：脉内分析 相位跳变 二次预测 

分 类 号：TN957.52[电子电信—信号与信息处理]