TH

Design and analysis of a chaotic time-hopping PAM UWB system

混沌跳时脉冲调幅超宽带系统设计与分析

Then the impact of the pulse repetition period,time-hopping slot time and pulse waveform on ICI was studied.

结合公式计算以及仿真结果,研究了脉冲重复周期、跳时步长以及脉冲波形对码间干扰的影响。

Focusing on the problem that the low transmitting efficiency and the high bit error rate of the current modulation techniques existed in ultra wideband(UWB) communication system,a time-hopping Mary biorthogonal pulse position modulation(TH-MBPPM) scheme was proposed.

针对目前超宽带(UWB)通信调制方式传输效率低下、误码率过高的问题,提出了采用跳时M元双正交脉冲位置调制(TH-MBPPM)改善系统性能的方法。

According to the characteristic of time hopping PPM signal,it proposes integral system designing project about produced time hopping PPM signal,the structure division of system is introduced in detail.

根据跳时PPM信号的特点,提出了产生跳时PPM信号的系统设计方案,对系统的各部分组成进行了详细的分析。

The LIA technology incorporating the frequency and time hopping techniques to restrain and eliminate the coloured noise were proposed.

针对有色噪声的抑制和消除,提出了跳频、跳时锁定放大技术;针对抑制和消除与信号同频的噪声,提出了移相调制锁定放大技术;针对抑制和消除与频率为信号频率奇数倍的噪声,提出了奇次倍频同步调制锁定放大技术;并给出了相关的实现方法。

Study of UWB time-hoping(TH) controller based on of FPGA realization

基于FPGA实现的超宽带无线通信跳时控制器研究

The hybrid multiple access scheme,OVSF-TH,was presented based on the orthogonal variable spread factor(OVSF),and a corresponding correlation mask for this scheme was designed.

该方案采用正交可变扩频因子(OVSF)与跳时相结合,使系统支持可变速率要求。

The point catastrophic modeland the accumulative point catastrophic model are described here, from which onecan derive some parameters such as catastrophic potential, catastrophic interval,catastrophic time and so on.

本文详细阐述了尖点突变理论，在此基础上建立了尖点突变模型和累加尖点突变模型，提取其实跳势、突跳间隔、突跳时间等参数；然后将突变理论应用于油气检测，并探讨其各参数的地质意义，发现突跳势、突跳时间曲线与油气分布呈一定程度的正相关关系。

The parameters of catastrophe, such as catastrophic potential, catastrophic time and so on, are calculated in time domain.

简述了突变理论中的尖点突变模型及其表达式,将地震信号转化为尖点突变的标准形式,在时间域内计算突跳势、突跳时间等突跳参数,发现突跳参数曲线上异常的位置与地下断层的位置有关。

Structures of the extended quadratic time-hopping sequences,the general class of quadratic time-hopping sequences and some of their special kinds were discussed.

讨论了扩展二次跳时序列和一般二次跳时序列及其特殊形式序列的构造,比较了它们的汉明互相关特性。

Elevation: The height a diver achieves from a take-off.

起跳高度:一名跳水运动员起跳时所达到的高度。

Analysis on Landing Movement of Hopping in Triple Jump;

三级跳远中各跳起跳时着地动作的作用分析

As I sprang up from the last bounce before take-off,

当我跳水前做最后一次弹跳时，

Well, Steven was not doing well in his second vault .

唉，斯蒂芬在第二次试跳时没有跳好。

Well, Steven is not well in his second vault.

唉，斯芬在第二次（撑竿）试跳时没有跳好。

Well, steven is not do well in his second vault.

唉，斯芬在第二次（撑竿） 试跳时没有跳好。

On the second jump, I fouled even worse.

第二跳时，则犯规更严重。

He have several go at the high jump before he succeed in clearing it.

他跳高时试跳了几次才跳过去。

He had several goes at the high jump before he succeeded in clearing it.

他跳高时试跳了几次才跳过去.

He had several goes at the high jump before he succeded in clearing it

他跳高时试跳了几次才跳过去

Human-board interaction during a running takeoff in springboard diving;

跳板跳水起跳动作时的人板协调关系

He took a photo of the plunger in action.

跳水者正在跳水时,他拍了张快照。

She is light-footed when she dances.

她跳舞时，舞步轻盈。

"Then loudly the feet of the horses were sounding with the stamping, the stamping of their war-horses."

那时壮马驰驱，踢跳，奔腾。

hour counter jumper eccentric

时计数器跳杆偏心轴

hour star jumper eccentric

时星形轮跳杆偏心销

Instantly the stick jumped out his hand.

顿时树棍跳出了他的手。

Throw your arms out in front of you as you dive.

跳水时手臂迅速前伸.