连贯性(哲学赌博策略)
不相关
乘性噪声
信号(编程语言)
相干时间
乘法函数
限制
阵列增益
计算机科学
相互连贯
传感器阵列
声学
算法
光学
出处
期刊:Journal of the Acoustical Society of America
[Acoustical Society of America]
日期:1973-12-01
卷期号:54 (2): 1743-1746
被引量:74
摘要
The effects of a signal coherence which decreases exponentially with sensor separation are examined for a number of line array processors. For the conventional beamformer the limiting gain against uncorrelated noise as the array is made infinitely long is simply (1 + ρ)/(1 − ρ), where ρ is the signal coherence between adjacent sensors. The gain of the optimum processor is also presented. A simple suboptimum processor which incoherently combines the outputs of a number of subarrays is found to provide near optimum performance. The performance of the split‐beam multiplicative processor is shown to degrade rapidly as signal coherence decreases.
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