针对频率捷变雷达信号分选准确率不高的问题,提出了一种新的频率捷变雷达信号分选算法。将频谱主峰图归一化中心矩和时频域能量分布归一化值构成相参特征向量,用SVM分类器实现自动分选。仿真结果表明,该方法在较低信噪比下仍能获得较为...针对频率捷变雷达信号分选准确率不高的问题,提出了一种新的频率捷变雷达信号分选算法。将频谱主峰图归一化中心矩和时频域能量分布归一化值构成相参特征向量,用SVM分类器实现自动分选。仿真结果表明,该方法在较低信噪比下仍能获得较为满意的分选准确率,当信噪比为5 d B时,信号分选准确率达到96.33%,验证了所提出方法的有效性。展开更多
To study the measurement of distance under the condition of the frequency modulation (FM) multi component signal of a short range radar, the multi points scattering model of a target, the TLS ESPRIT (total least sq...To study the measurement of distance under the condition of the frequency modulation (FM) multi component signal of a short range radar, the multi points scattering model of a target, the TLS ESPRIT (total least square estimation of signal parameters via rotational invariance techniques) and the mathematical statistics methods were used. The method of computing single frequency signal's instantaneous frequency (IF) is unsuitable to the multi component signal. By using the method of the TLS ESPRIT combined with the mathematical statistics, the multi component signal's IF can be obtained. The computer simulation has shown that the method has the high accuracy for measuring the distance.展开更多
文摘针对频率捷变雷达信号分选准确率不高的问题,提出了一种新的频率捷变雷达信号分选算法。将频谱主峰图归一化中心矩和时频域能量分布归一化值构成相参特征向量,用SVM分类器实现自动分选。仿真结果表明,该方法在较低信噪比下仍能获得较为满意的分选准确率,当信噪比为5 d B时,信号分选准确率达到96.33%,验证了所提出方法的有效性。
基金Doctoral Programme Foundation of Institution of Higher Education of China.
文摘To study the measurement of distance under the condition of the frequency modulation (FM) multi component signal of a short range radar, the multi points scattering model of a target, the TLS ESPRIT (total least square estimation of signal parameters via rotational invariance techniques) and the mathematical statistics methods were used. The method of computing single frequency signal's instantaneous frequency (IF) is unsuitable to the multi component signal. By using the method of the TLS ESPRIT combined with the mathematical statistics, the multi component signal's IF can be obtained. The computer simulation has shown that the method has the high accuracy for measuring the distance.