具有信任度输出的雷达信号SVM回归分析模型  

Regression analysis model for radar signal based on SVM with credibility evaluation

作　　者：尚伟[1] 梁玉英[1] 朱赛[1] 

机构地区：[1]军械工程学院光学与电子工程系,河北石家庄050003

出　　处：《信息与电子工程》2012年第2期192-195,共4页information and electronic engineering

基　　金：国家自然科学基金资助项目(60472009)

摘　　要：针对支持向量机只有点输出,没有概率输出的问题,提出了一种加权平均的预测信任度函数,通过该函数推导计算出每个预测值对应的信任度,实现对预测值采用一个可信程度的度量。用雷达上常用的线性调频信号仿真验证得出,该方法不但实现了计算预测信任度,而且可为信号中噪声含量提供定性分析。Support Vector Machine（SVM） has been widely applied to classification and regression problems.Because there is no probability output but lattice output only in SVM,this paper puts forward a kind of credibility prediction function with weighted average.Through this function,the degree of belief corresponding to every predicted value can be calculated,adopting a tolerance of credible level on the predicted value.Simulation results with the general Linear Frequency Modulation（LFM） Chirp signal on radar indicate that,this method not only realizes calculating the degree of belief for prediction,but also can offer qualitative analysis for the noise content in signal.

关 键 词：支持向量机 回归算法 信任度 预测 概率输出 

分 类 号：TN957.51[电子电信—信号与信息处理] TP181[电子电信—信息与通信工程]