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本文研究运用组合传感器和声压、振速联合信号处理技术进行低噪声通过特性的测量。通过特性的背景噪声由非相干的各向同性白噪声和相干的交通干扰组成，交通干扰又分为平稳与非平稳两种。用平均声强器来抗非相干干扰；用交通干扰能量流中心方位抑制技术来抗平稳的相干干扰；对于非平稳的相干干扰则需用自适应的交通干扰能量流中心方位抑制技术。仿真试验表明效果良好。
This paper studies the use of a combination of sensors and sound pressure, vibration signal processing combined with low-noise characteristics of the measurement. The background noise passing through the characteristic consists of incoherent isotropic white noise and coherent traffic interference, and the traffic interference is divided into two types, that is, stationary and non-stationary. Using the average sound power device to resist non-coherent interference; using traffic jamming energy flow center azimuth suppression technology to stabilize the coherent interference; and for non-stationary coherent interference, an adaptive traffic jam energy flow center azimuth suppression technology is required. Simulation results show that the effect is good.