分析衰减常数、增益系数和空间常数对图像增强处理的影响。
The effect of passive decay rate constant gain coefficient and space surround constant were analyzed.
作为一次练习，估算了测控通信系统的工作频率、电波穿过“黑障”区的衰减常数；
As an example, the operation frequency of TT&C and data transmission(TTC&DT) and the attenuation constant of electromagnetic wave through the blackout zone are estimated.
研究UHF频段的无线电波在矩形、圆形和拱形隧道中的传播特性，推导了衰减常数的计算公式。
Propagation characteristic of UHF radio wave in rectangle, circle and arched tunnels is studied in this paper and the computing equation for attenuation constant is deduced.
此外，推导出波导tm、TE模的传输功率、损耗功率、衰减常数、等效阻抗等特征参数的边界元公式。
Furthermore, the formulae of transmitted power, loss power, attenuation constant and equivalent impedance for TM and te modes are deduced.
此外，推导出波导tm、TE模的传输功率、损耗功率、衰减常数、等效阻抗等特征参数的边界元公式。
Furthermore, the formulae of transmitted power, loss power, attenuation constant and equivalent impedance for TM and te modes are deduced.
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