【摘要】 针对采用余弦适应度函数的模糊度函数法的适应度评价受噪声影响较大的问题,提出了基于信号载噪比的滤波适应度函数法。分析了余弦适应度函数的特点,对适应度函数的观测噪声进行分析建模,构造出基于信号载噪比的滤波适应度函数,并实现了对观测噪声的自适应。试验结果表明:与原算法相比,滤波适应度函数算法能够更好地抑制观测噪声对适应度评价的影响,提高模糊度函数法的成功率。更多还原

【Abstract】 In view of that the evaluation of adaptability is heavily affected by the noise for the ambiguity function method using cosine fitness function,a filter fitness function based on the signal carrier to noise ratio is proposed.The characteristics of the cosine function fitness are analyzed,and the observation noise is analyzed and modeled.The filter fitness function based on the signal carrier to noise ratio is constructed,and the noise adaptability is realized.The results show that the filter fitness function reduces the noise affection on the evaluation of adaptability more effectively than the cosine function,and the success rate of the ambiguity function method is improved.更多还原