摘要
提出了采用相干平均法提高信号的信噪比并检测微弱信号的方法,介绍了相关检测的原理.该方法无需知道信号的先验知识,适合于信噪比很低的信号,有一定的应用前景.通过在matlab中实现检测的实例和步骤,运行结果表明该方法的有效性.
A detection method for weak signal with coherence average is presented,and the principle of cross-correlation detection is introduced.The method is effective for lower SNR signal without transcendental knowledge,and has good future in applications.the instance and steps of matlab are made to test the method,Running result show the validity of the method.
出处
《淮阴师范学院学报（自然科学版）》
CAS
2005年第2期142-145,共4页
Journal of Huaiyin Teachers College;Natural Science Edition
基金
航空科学基金资助项目(04G52042)
关键词
微弱信号
自相关函数
相干平均
信噪比
weak signal
autocorrelation function
coherence average
SNR
