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- guided wave radar 导波雷达
- The recent advances in ultrasonic guided wave testing technique are summarized. 摘要综述近年来超声导波检测研究的最新进展。
- The simulation of bistatic/multistatic HF ground wave radar echo is analyzed. 摘要分析了双／多基地高频地波雷达回波信号的仿真过程。
- guide wave radar 导波雷达
- Guided wave second-harmonic (SH) generation can not be phase matched automatically by Cerenkov radiation scheme. 用波导产生倍频波时,如果倍频波进入辐射模区,仍然有相匹配问题。
- A three dimension polarization filtering algorithm is put forward to suppress th e skywave interference in HF ground wave radar. 以高频地波雷达为背景，提出了三维极化滤波方法，此方法能够滤除二维极化滤波不能抑制的干扰，扩大极化滤波的干扰抑制范围。
- Based on the ultrasonic guided wave technique and the dispersive waveform prediction method, a method about how to image defects in pipes is presented. 摘要在导波传播理论和频散波形预测理论的基础上，研究了超声导波在检测管道时，如何利用时域波形重构缺陷图像的问题。
- An ocean echo signal simulation system for verification and calibration of FMICW high frequency ground wave radar is presented in this paper. 该文给出一种调频中断连续波(FMICW)高频地波海况监测雷达的仿真模拟检验系统。
- According to the characteristics of the millimeter wave radar,the possibility to conduct active jamming towards millimeter wave radar is discussed. 根据毫米波雷达的特点,对毫米波雷达实施有源干扰的可行性进行了分析。
- The paper introduces the method of the HF ground wave radar to pick-up the usable information, gives the detailed scheme to obtain the simulant echo. 文章首先分析了雷达回波信号中有用信息提取方式，给出了模拟回波信号的实现方案；
- The transmitter generates guided wave in the plate according to magnetostrictive effect,and then it propagates in the plate and is reflected by the damages and edges of the plate. 根据反射信号的到达时间和波在板中传播的速度,可判断出板中缺陷所在位置。改变恒定偏置磁场与时变磁场的方向可以在板中激励不同波型的导波。
- In this paper, signal preprocessing for bearing determination of ocean surface radial current mapping by HF ground wave radar based on MUSIC is investigated. 阐述从高频地波雷达海洋回波反演海洋表面流中,使用MUSIC算法提取径向流方位必须的信号预处理。
- An error model of transmitting array mutual coupling, gain and phase error of the synthetic transmitted beam bistatic HF-Surface Wave Radar (HF-SWR) is investigated in this paper. 该文研究了基于发射方向图综合的双基地高频地波超视距雷达发射天线阵互耦、幅度及相位误差模型。
- Optional in some markets are the Adaptive Cruise Control and CMBS systems, which use millimetre wave radar to detect and help reduce the risk of collisions. 在一些市场可选的自适应巡航控制和统筹计划系统，利用毫米波雷达探测和帮助减少碰撞的危险。
- To meet the requirement of extracting surface current by a single station of HF surface wave radar,we present a novel algorithm by synthetic aperture technique in this paper. 为满足高频地波雷达单站提取表层海流的需求,提出了一种利用合成孔径技术提取表层海流的新算法,并通过仿真验证其可行性。
- Applying classical wave theory, a concept of equivalent elastic modulus on propagation speed modification of guided wave through "variable cross-section" of metal bar embeded layer was put forward. 摘要运用波动的经典理论，提出了导波在金属杆嵌入层“变截面”传播时波速改变的“等效弹性模量”的概念。
- Due to the dispersive and multi-mode characteristics of guided waves,the pulse of energy will spread out in space and time as it propagates. 在分析超声导波时间-空间传播特性基础上,建立了超声导波检测的空间表述模型。
- Guided wave inspection is very attractive in this application as it is particularly sensitive to transverse vertical defects since the waves travel along the length of a rail. 由于波沿着轨道长度方向传播，在横向/垂直向不合格品检验中非常灵敏，所以导向波检验在这方面是非常有吸引力的。
- Our theoretical analysis produces the dispersion curves of longitudinal modes of ultrasonic guided waves in liquid-filled pipes with viscoelastic coatings. 理论分析得到了带粘弹性包覆层充液管道中纵向模态的频散曲线。
- To obtain the RCS of large target quickly, the Graphical Electromagnetic Computing(GRECO) is used to calculate the RCS of large ship in almost real-time. The results are credible and can be used for the study of short wave radar system. 通过对仿真结果分析和解释 ,计算结果是符合实际情况的 ,所开发的GRECO软件在大尺寸目标的RCS计算中是准确、高效的 ,可以为短波雷达系统的研究提供可信的仿真数据。
