There are not any special documents about surveying and studying the three dimensions field intensity distribution in space of bat 国内外在蝙蝠声场强度分布的系统测量与研究方面尚无专门文献对其做出阐述。
But in acoustics the three dimension field intensity distribution in space is an unignorant character of the signal of bat and is very valuble to be researched 而从声学本身出发看待蝙蝠信号,它的空间三维场强分布是不可忽视的一个特征,有重要的研究价值。
Secondly , we expounds theory forecast of the sound field intensity distribution of bat in acoustics and analysis the character of the signal that we collect at present 接着,从声学角度阐述对于蝙蝠声场强度的分布特征的理论预测,从理论角度分析我们在现阶段实验中所要采集蝙蝠信号的特性。
We studied the influence of 2d supersoni c slope flow to the far field intensity distribution of 10 . 6um and 1 . 315um laser beam when flow is in different inflow mach number 研究了二维超音速绕楔流动在不同马赫数下的流场时均参数分布对波长分别为10 . 6 m 、 1 . 315 m的激光束的远场强度分布的影响。
Because there are no special instruments we plan to design a special instrument to study the soud field intensity distribution of bat . we use fix point dsps tms320vc5402 as a core chip which is made by ti 基于目前尚无合适专用仪器的情况,拟用ti公司生产的54系列定点dsp芯片tms320vc5402为核心自行设计一套专用仪器研究蝙蝠声场强度分布。
The results show : laser beam far field intensity distribution deflect to the wave length increasing direction , the influence to laser beam far field intensity distribution of different inflow mach number is little than the influence of different inflow pressure ; flow field has more aberration to 1 . 315um laser beam than to 10 . 6um laser beam 研究表明激光束远场强度分布都向流场光程增大的方向偏折,喷流出口马赫数的变化对激光束远场强度分布的影响较小,喷流出口压力的变化对激光束远场强度分布的影响较强;在相同的流场结构下,流场对波长1 . 315 m激光束的干扰要明显强于对波长10 . 6 m激光束的干扰。