10lg*Pb/Pa=10lg*0.5=10*(-0.3)=3(db)是怎么来的?10lg究竟代表什么意义?盼高手通俗释义,切勿复制.假定一个信号从点a传输到另一点b,信号的能量衰减了一半 Pb=0.5Pb 如帮小弟一解此惑,小弟愿赠额
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 20:10:15
![10lg*Pb/Pa=10lg*0.5=10*(-0.3)=3(db)是怎么来的?10lg究竟代表什么意义?盼高手通俗释义,切勿复制.假定一个信号从点a传输到另一点b,信号的能量衰减了一半 Pb=0.5Pb 如帮小弟一解此惑,小弟愿赠额](/uploads/image/z/8043177-57-7.jpg?t=10lg%2APb%2FPa%3D10lg%2A0.5%3D10%2A%EF%BC%88-0.3%EF%BC%89%3D3%EF%BC%88db%EF%BC%89%E6%98%AF%E6%80%8E%E4%B9%88%E6%9D%A5%E7%9A%84%3F10lg%E7%A9%B6%E7%AB%9F%E4%BB%A3%E8%A1%A8%E4%BB%80%E4%B9%88%E6%84%8F%E4%B9%89%3F%E7%9B%BC%E9%AB%98%E6%89%8B%E9%80%9A%E4%BF%97%E9%87%8A%E4%B9%89%2C%E5%88%87%E5%8B%BF%E5%A4%8D%E5%88%B6.%E5%81%87%E5%AE%9A%E4%B8%80%E4%B8%AA%E4%BF%A1%E5%8F%B7%E4%BB%8E%E7%82%B9a%E4%BC%A0%E8%BE%93%E5%88%B0%E5%8F%A6%E4%B8%80%E7%82%B9b%2C%E4%BF%A1%E5%8F%B7%E7%9A%84%E8%83%BD%E9%87%8F%E8%A1%B0%E5%87%8F%E4%BA%86%E4%B8%80%E5%8D%8A+Pb%3D0.5Pb+%E5%A6%82%E5%B8%AE%E5%B0%8F%E5%BC%9F%E4%B8%80%E8%A7%A3%E6%AD%A4%E6%83%91%2C%E5%B0%8F%E5%BC%9F%E6%84%BF%E8%B5%A0%E9%A2%9D)
xUKOW+l"dlRE ]THcEʢ-B ~5cob
$&3F_{^zv,*!t}y~wln4E7cX}YXah͡I\z|%!)\&q3dޯLn5Ȭ:׳xCnC>`7H#Od뎌MnIOuxSn txi|Bv-#58ۃ
&O.M+&g=?imއe~o t+Ы@Jnmϥ Sb}l$-z1muJR0}wzFWބ^'+Z:dp:ǥp*;)p3p!+]7-Z<"ಮG÷1%LҌF=+52]RX&샌
h$շ!2mf&
$tnw]Rc/g@Y8cP?