摘要
利用二阶统计理论,推导并得出了频差存在条件下时延估计值的均值是一个频差和时域相关长度乘积的辛格函数,从理论上澄清了频差对时延估计精度的影响;提出了在频差存在条件下时延估计的参数选取方法,并进行了仿真验证。
Based on the second-order statistical theory,a conclusion is drawn.the mean of time delay estimation （TDE） value under the condition that frequency difference exists is a SINC function whose variable is the product of frequency difference and time domain correlation length, which clarifies the influence of frequency dfference on the precision of TDE. The parameter selection method of TDE under the condition that frequency difference exists is proposed,and the simulation validation is performed.
出处
《舰船电子对抗》
2013年第5期73-76,共4页
Shipboard Electronic Countermeasure
关键词
频差
时延估计
辛格函数
时域相关
frequency difference
time delay estimation
SINC function
time domain correlation
