基于差值定理的相位差变化率提取方法  

A Method for Extracting Phase Difference Change Rate of Single Station Passive Location Based on Difference Theorem

作　　者：刘文跃 彭世蕤[1] 王广学[1] 张逸楠 LIU Wenyue;PENG Shirui;WANG Guangxue;ZHANG Yinan(Air Force Early Warning Academy, Wuhan 430019, China)

机构地区：[1]空军预警学院,湖北武汉430019

出　　处：《雷达科学与技术》2020年第4期417-421,428,共6页Radar Science and Technology

摘　　要：当空中观测平台姿态扰动时,单站无源定位技术提高对目标定位精度的关键是:提取能充分反映平台姿态变化信息的相位差变化率和利用导航数据对平台姿态进行补偿。针对这种情况,本文提出了一种基于差值定理的相位差变化率提取新方法,较差分、卡尔曼滤波等传统相位差变化率提取方法,本文方法提取的相位差变化率数据含有更丰富的平台姿态变化信息,因而利用导航数据进行姿态补偿时效果更好,目标定位精度更高,仿真实验验证了本文方法的正确性。When the attitude of the aerial observation platform is disturbed,the key to improve the target location accuracy of the single station passive location technology is to extract the phase difference change rate that can fully reflect the platform attitude change information and to compensate the platform attitude by using the navigation data.In view of this situation,this paper proposes a new method of extracting phase difference change rate based on difference theorem.Compared to the traditional phase difference change rate methods,such as difference method,Kalman filter method,and so on,the phase difference change rate data extracted by this method contains more abundant platform attitude change information.So the effect of attitude compensation using navigation data is better and the target positioning accuracy is higher.The correctness of the proposed method is verified by simulation experiments.

关 键 词：相位差变化率 单站无源定位 姿态补偿 差值定理 提取方法 

分 类 号：TN953[电子电信—信号与信息处理]