指向性指数
- 网络directivity index
指向性指数-
地面衰减，屏蔽，反射，指向性指数的影响。
Influence from Ground Attenuation , Screening , Reflection , Directivity Index .
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介绍了指向性因数和指向性指数的定义、计算式。
The definition of directivity factor , directivity index & equation are introduced firstly .
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从指向性指数出发分别推导了海面噪声场条件下和半各向同性噪声场条件下质点振速检测器增益和声能流检测器增益的理论极限。
The gain limitation of particle velocity and acoustic energy flux in the sea surface noise field and half-isotropic noise field is discussed based on orientation-exponent theoretic .