Three subjects-UWB radar antenna, UHF/VHF band receiver noise temperature, and the target detection from background, which are main factors in UWB SAR range equation, are studied.
从超宽带雷达天线、UHF/VHF波段接收机噪声温度以及最小可检测的信噪比三个方面研究了超宽带合成孔径雷达方程。
The question raised by radio frequencies - microwaves or radio frequencies of the UHF or VHF band - was whether the electromagnetic could have a similar effect at very low levels.
无线电频率，微波，或者超高无线电频率（VHF ）所带来的疑问是电磁环境在非常低能量的状态下是否也会引发类似的效果。
The radio also has an extended range that provides access to low-band VHF.
该无线电系统还可扩展频率范围，提供低频段甚高频。
Now maritime communications systems primarily include satellite communications, single side band, VHF (VHF).
现在海上通信系统主要有卫星通信、单边带、甚高频(VHF)。
Lightning detection is of great significance in the national life, in which the VHF-band detection plays an important role.
闪电探测在国民生活中有着重要的意义，VHF频段的信息对于雷电探测和预警有着尤为重要的意义。
According to the characteristics of VHF-band circuit, a VHF broadband high-power amplifier was introduced in this paper.
本文根据VHF频段电路的特点，设计了一款VHF宽带大功率放大器。
According to the characteristics of VHF-band circuit, a VHF broadband high-power amplifier was introduced in this paper.
本文根据VHF频段电路的特点，设计了一款VHF宽带大功率放大器。
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