单矢量传感器的实验分析

Experimental analysis of single vector sensor

单矢量传感器的有关理论得到了湖试数据的验证."雨滴"噪声场实验验证了声压、振速通道各向同性背景噪声的独立性."拉距"实验提供了方位统计量和互谱统计量,方位时间历程出现了有偏现象,声强谱与声压谱比较,前者有可能获得信号功率谱的一致性估计.提出的3种谱级信噪比的估计方法,适用于实验环境的评估.有秒量级的起伏,积分时间较短的数据样本所提供的实验分析与理论和实际经验有较好的一致性.

Correlative theories of single vector sensor were validated in lake experiments. The 'raindrop' noise field experiment proved that the pressure and particle velocity of isotropy background noise are independent. Ranging test provided the statistical quantity of azimuth and cross spectrum; azimuth - time course appears partial. Compared with pressure spectrum, acoustic intensity spectrum is likely to gain the consistent estimation of signal power spectrum. Five spectrum level SNR estimating methods are fit for evaluating the experimental environment. The signal phase has the fluctuation quantified of second level. Theory and actual experience has better consistency which is approved by experimental analysis of samples of shorter integral time.