使用正交模拟锁相环路对无载波的脉冲无线电系统实现多径捕获和同步提取。
The orthogonal analog phase lock loop is used to get the timing information of the impulse radio system and the multi-path component separation.
重点分析了脉冲无线电方式的原理，脉冲的几种产生方法，调制、发射以及脉冲信号的技术特点。
The principle of impulse radio (IR), several kinds of pulse generators, pulse modulation and signal emission for UWB radio, as well as characteristics of UWB-IR are mainly presented and concluded.
近年来，超宽带脉冲无线电UWB-IR传输技术以低功耗、高速率、低检测率和低截获率等特点受到军事通信领域的关注。
UWB-IR technology has been concerned in military communications in recent years because of its high data rate, low power consumption, low probability of detection and low probability of interception.
超宽带冲激无线电技术是近年来新兴的通信技术，其主要核心技术是采用了冲激脉冲技术和跳时码调制。
The UWB impulse radio technology is a new kind of communication method these years, in which the swash impulse and time-hopping code modulation techniques are mainly applied.
分析了超宽带冲激无线电的脉位调制、通断键控调制和脉冲幅度调制的信号模型。
The ultra wideband (UWB) radio models have been introduced with pulse-position-modulation (PPM), on-off-keying (OOK) and pulse-amplitude-modulation (PAM).
UWB发射机在一个很宽的无线电频率上发送几十亿个短脉冲。
A UWB transmitter sends billions of short-duration pulses across a wide spectrum of radio frequencies.
MRI是利用强大的磁场，低强度的无线电频率脉冲和数据处理软件来得到软组织、肌肉、神经、脂肪和骨骼的精细的图像。
MRI USES a powerful magnetic field, low intensity radio-frequency pulses, and data-processing software to create detailed images of soft tissue, muscles, nerves, fat and bones.
基于窄脉冲串的超宽带无线电系统是一种典型的超宽带实现方式。
The UWB system based on narrow pulses train is a typical UWB system.
将数字射频存储器(DRFM)应用到机载无线电引信干扰机中用来对脉冲测距引信和脉冲多普勒引信进行干扰。
In the paper, digital radio frequency memory (DRFM) is applied to airborne radio fuze jammer to jam pulse distance-detecting fuze and pulse Doppler fuze.
为了避免对频带内现存的无线电系统造成干扰，在进行脉冲波形设计时必须对UW B脉冲波形提出一些要求。
To avoid interference with the existing radio systems in the band, there are some requirements for UWB pulse waveforms design.
通过超宽带电磁脉冲对无线电引信的辐照实验，研究了无线电引信在超宽带电磁脉冲作用下的效应。
By the irradiation experiments of ultra-wideband electromagnetism pulse (UWB EMP) to radio fuse, the effects of radio fuse are studied.
实验表明：无线电引信在超宽带电磁脉冲照射下，会产生早炸现象。
The experiments show that radio fuse may explode early when UWB EMP irradiate it.
通过对引信所处雷电电磁环境的分析，研究了无线电引信雷电电磁脉冲效应的实验室评估方法。
By analyzing the lightning electromagnetic environment of fuze, the experiment method of LEMP effects on radio fuze has been studied.
利用超宽谱电磁脉冲（UW S-EMP）源对无线电引信进行辐照，辐照结果表明：超宽谱电磁脉冲不能使勤务状态下的引信意外发火，但是可以使待发状态下的引信意外发火；
The radio fuzes are irradiated by UWS-EMP. Irradiating result indicates that the fuzes on duty status are safe to UWS-EMP, but UWS-EMP can cause radio fuzes on ready status detonate.
利用超宽谱电磁脉冲（UW S-EMP）源对无线电引信进行辐照，辐照结果表明：超宽谱电磁脉冲不能使勤务状态下的引信意外发火，但是可以使待发状态下的引信意外发火；
The radio fuzes are irradiated by UWS-EMP. Irradiating result indicates that the fuzes on duty status are safe to UWS-EMP, but UWS-EMP can cause radio fuzes on ready status detonate.
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