钹式水听器体积小，灵敏度高，但是接收的性能不够稳定，接收频带比较窄。
The cymbal hydrophone has small volume and high sensitivity, but its reception performance is not stable enough, with narrow receiving frequency band.
单个天线的工作频带覆盖了例如由无线电系统所使用的频率范围或者只是该频率范围内的发射频带或接收频带。
The operating band of an individual antenna covers e. g. the frequency range used by a radio system or only the transmitting or receiving band in that range.
MIMO系统在发送端和接收端利用多个天线同时在相同的频带内传输信号，使得信道容量得到很大的增加。
The MIMO systems use multiple antennas at both the transmitter and receiver to transmit signal in the same frequency band at the same time can significantly increase the channel capacity.
声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
介绍了宽频带空间有源目标单脉冲跟踪接收系统的组成及其工作原理。
This paper introduces the composition and working principle of single pulse tracking reception system for wide frequency-band spatial active target.
针对超声探伤的特点，设计了低噪声、宽频带、动态范围大的接收调理电路。
Aimed at the characteristics of ut, a receive and adjust circuit is designed, which have character of low noise, wideband, wide dynamic range of input.
时域脉冲天线具有辐射和接收快速变化的瞬态脉冲信号的能力，这种脉冲天线能够覆盖很宽的频带。
The time-domain pulse antenna has the ability to radiate and receive the fast changed transient signal, because this kind of pulse radiation antenna has very wide frequency range.
带通滤波器经常用于抗干扰设备中，以便接收某一频带范围内的有效信号，而消除高频段和低频段的干扰和噪声。
Band-pass filter often used in anti-jamming devices, in order to receive a valid signal within the band, while the elimination of high frequency and low frequency interference and noise.
扩频通信是指在发送端将信号的频谱扩展到一个很宽的频带上，在接收端通过相关接收，将信号恢复到信息带宽的一种系统。
The SS communication is a system that the spectrum of signal is spreaded in a wide frequency band when transmitted, and is recovered by the correlation reception when received.
基于FM信号的无源雷达目标回波信号信杂比低，频带窄，只有开发大动态范围的接收机才有可能接收到微弱的目标散射信号。
The target echo of passive radar based on FM signal has the characteristics of low SCR and narrow band. Only the receiver with large dynamic range can receive the weak echo signal.
具有圆极化和宽频带特点的宽带导航接收天线成为近年卫星接收天线研究的热点之一。
One of the focuses on the research of the satellite navigation receiver antenna is that of circular polarization and broadband.
不像许多其他hf/50MHz的接收器有没有需要安装额外的股调频模式招待会上29和50兆赫频带。
Unlike many other HF/50 MHz receivers there is no need to install an additional unit for FM mode reception on the 29 and 50 MHz bands.
基于六端口技术的直接变频接收机被证明是一种适用于可重构、重复编程、多频带、多标准的很有前途的接收机结构。
The aim of this work is to research the six-port theoretical background, and design a Ka-band direct conversion receiver front-end based-on six-port.
结果表明，改进后仪器接收到的地震反射波主振幅、主频率、频带宽度、垂向分辨率及仪器记录信号的有效动态范围均有不同程度的提高。
The results show that the main amplitude, main frequency and frequency band of reflected wavelet and the effective dynamic range of system have different degrees of increase.
结果表明，改进后仪器接收到的地震反射波主振幅、主频率、频带宽度、垂向分辨率及仪器记录信号的有效动态范围均有不同程度的提高。
The results show that the main amplitude, main frequency and frequency band of reflected wavelet and the effective dynamic range of system have different degrees of increase.
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