Chinese | English |
一阶微分环节 | first derivative element |
三分贝带宽 | three dB bandwidth |
不充分数据对直方图的影响 | effects of insufficient data on histograms |
不重要的地址部分 | neo-significant address part |
中心处理分系统 | central processing subsystem |
中频分集 | intermediate frequency diversity |
中频分集 | IF diversity |
二倍分组块补零 | double block zero padding |
二次分频电路 | divide-by-two circuit |
二阶微分环节 | secondary derivative element |
亮度信号分辨能力 | luminance resolution |
以 O 参考电平噪声评价数为基准相对 1 毫瓦的分贝 | Decibel relative 1 mw at zero reference level psophometrically weighed |
以相对传输零电平为基准的分贝数 | Decibel referred to zero relative transmission level |
仰角分类选择显示 | display selected by elevation class |
仰角分辨率力 | elevation resolution |
伏特分贝以 1 伏为零电平的分贝 | Decibel referred to one volt |
传感器数据分布网络 | sensor data distribution network |
传输保密分析报告 | transmission security analysis report |
位置分辨率 | position resolution |
低位地址部分 | lower address part |
低压微分信号 | low voltage differential signal |
低频分析器与测距 | low frequency analyzer and ranging |
体分布目标 | volume distributive target |
作战区域分析 | analysis of the area of operation |
侦察分队 | reconnaissance detachment |
便携式情报综合分析系统工作站 | portable ASAS work station |
信号分类与识别 | signals classification and recognition |
信号电平分配 | signal level distribution |
信号雷达维修分队 | signal radar maintenance unit |
信息分发 | information distribution |
信息分配与交换系统 | information distribution & switching system |
信息分隔符分离器 | information separator |
信息处理分系统 | message processing subsystem |
舰载信息处理分配系统 | message processing distribution system shipboard |
信息获取与分发 | information acquisition and dissemination |
信息量分析 | traffic analysis |
信标时间分享 | beacon time sharing |
信道分配计划表 | channel assignment table |
信道同步脉冲分离器 | channel synchronizing pulse separator |
修改的二倍分组块补零 | modified double block zero padding |
修理任务分配 | repair task allocation |
先进分布式孔径系统 | advanced distributive aperture system |
先进式分布仿真 | advanced distributed simulation |
先进数据分发系统 | advanced data distribution system |
光学分辨率 | optical resolving power |
光学频谱分析 | optical spectrum analysis |
光电倍增管脉冲高度分辨力 | photomultiplier pulse-height resolution |
光电目标识别和分配系统 | electro-optical target acquisition and designation system |
光纤分布式数据接口 | fiber distribution data interface |
光纤分配 | G fibre-optic distribution |
全分辨度黑白图像 | full resolution monochrome picture |
全向干扰分析 | omnidirectional jamming analysis |
全源分析系统 | all source analysis system |
共时分配系统 | elapsed time distribution system |
兼容时分系统 | compatible time-sharing system |
冗余力分析 | redundant force analysis |
军战术作战中心支援分队 | corps tactical operations center support element |
分割噪声 | partition noise |
分区平板透镜天线 | zoned-plate lens antenna |
分区透镜 | zone lens |
分奈培 | decineper (等于 0.87 分贝) |
分子微波分光仪 | molecular microwave spectrometer |
分子束型微波激射器量子放大器 | molecular beam type maser |
分子束微波激射器量子放大器 | molecular beam maser |
分子集成电路 | molecular integrated circuit |
幅度分层 | amplitude quantizing |
分层噪声 | quantizing noise |
分层干扰 | layer jamming |
分布孔径红外系统 | distributive aperture IR system |
分布式偶极天线阵 | spaced dipole array |
分布式因特网的显像与监控 | distributed Internet discovery and monitoring |
分布式天线测向器 | spaced antenna direction finder |
分布式天线阵 | distributed array |
分布式干扰 | distributed jamming |
分布式应用管理器 | distributive application manager |
分布式情报信息处理 | distributed information processing |
分布式拒绝服务攻击 | distributing denial of service attack |
分布式接收机 | spaced receiver |
分布式构建对象模型 | distributed component object model |
分布式波控 | distributed beam control |
分布式环形天线 | spaced frame loop antenna |
分布式环形天线测向器 | spaced loop direction finder |
分布式网址 | distributive net address |
分布式认证安全服务 | distributed authentication security service |
分布式通用地面站 | distributed common ground station |
分布式雷达网 | distributed radar net |
分布目标的自动对消 | automatic cancellation of extended target |
分支式天线收发开关双工器 | branch duplexer |
分支式电桥 | branch hybrid junction |
分机自检 | self-verifying subassembly |
分析仪干扰 | analyzer jamming |
分析带宽 | analysis bandwidth |
分段孔径的合成孔径雷达 | segmented aperture synthetic aperture radar |
分段平方律检波器 | piecewise quadratic detector |
分段门限 | fragmentation threshold |
分清敌我 | identification, friend or foe |
分激外差式接收法 | separate heterodyne reception |
分激外差法检波 | separate heterodyne detection |
分离 | detachment |
分离对应通信 | separate correspondence |
分离折叠波导 | split folded waveguide |
分离波门双波门跟踪器 | split gate tracker |
分离滤波器 | diplexer |
分离网络型 | separate mesh type |
分立元件逻辑电路 | discrete component logic circuit |
分米波 | deci-meter wave |
分类信号 | class signal |
美分类、定位和避开风切变 | classify, locate and avoid wing shear |
分类、定位和避开风切变计划项目美 | CLAWS project |
分级信息控制 | hierarchical information control |
分组业务数据节点 | packet data serving node |
分组密码算法 | block cipher algorithm |
分裂门双波门前沿跟踪 | split gate leading-edge track |
分裂门双波门跟踪距离 | split gate range track |
分贝微伏 | DB above 1 microvolt |
分贝微伏/兆赫 | DB above 1 microvolt per megahertz |
分贝微伏/米/兆赫 | DB above 1 microvolt per meter per Megahertz |
分贝毫瓦以 1mw 为参考电平 | DB above 1 milliwatt |
分贝毫瓦/平方米 | DB above 1 milliwatt per square meter |
分贝毫瓦/平方米/兆赫 | DB above 1 milliwatt per square meter per megahertz |
分贝载波以载波为参考电平 | Decibel referred to carrier |
分路信道发射机 | channelized transmitter |
分路带宽 | branch bandwidth |
分载频分隔载波调制 | divided-carrier modulation |
分辨率力 | resolution |
分选准确率 | sorting right rate |
分配开关网络 | distribution switching network |
分配式系统网络 | distributor system network |
分配情报系统 | distributed intelligence system |
分配时隙 | assignment slot |
分配频率 | allotted frequency |
分隔分离信号 | separative signal |
分隔分离滤波器 | separation filter |
分集天线测向器 | spaced aerial direction finder |
分集接收法 | diversity reception |
分集雷达 | diversity radar |
分频段放大器 | split band amplifier |
分频滤波器 | band splitting filter |
到达角位置分析 | angle of arrival location analysis |
制导误差分析模型工具 | guidance error analysis vehicle |
功能性方案分析 | functional solution analysis |
动态频谱分析仪器 | dynamic spectrum analyzer |
区域差分 GPS | local area DGPS |
区域通信终端分系统 | area communication terminal subsystem |
区域雷达预测分析 | area radar perdition analysis |
十亿分之一秒 | ns |
十进可变分频器 | decade variable divider |
半圆形波导分波滤波器 | semi-circular waveguide-type band splitting filter |
卫星红外分光仪 | satellite infrared spectrometer |
双分收发分置雷达情报搜集与分析系统 | bistatic radar intelligence generation and analysis system |
双时间常数同步信号分离器 | double-time constant synchronous signal separator |
双重分集接收法 | dual diversity reception |
发射机分集 | transmitter diversity |
发射极分路电容 | emitter shunt capacitance |
发射极分路电导 | emitter shunt conductance |
口径场分布 | aperture field distribution |
可靠性与可维修性分析 | reliability maintainability analysis |
同步脉冲分配器 | synchronizing pulse distribution unit |
噪声分析器仪 | sonic noise analyzer |
四分之一波长 | quarter-wave (length) |
四分之一波长扼流圈 | quarter-wave choke |
四分之一波长短截线 | quarter-wavelength stub |
四分之一波长短截线 | quarter-wave stub |
四分之一波长短截线 | quarter-wave slug |
四分之一波长终端 | quarter-wave termination |
四分图 | quartern circle |
四分圆 | quartern circle |
四重分集系统 | quadruple diversity system |
地区号码分析 | area code analysis |
地面支援分系统 | ground support subsystem |
垂直分集参差距离 | vertical diversity distance |
T 型功率分配器 | T-type power divider |
处理、利用和分发 | processing, exploitation and dissemination |
多信号分类 | multiple signal classification |
多功能信息分发系统-联合战术无线电系统 | multifunction information distribution system-joint tactical radio system |
多弹头分导再人飞行器 | multiple independently targeted reentry vehicles |
多普勒分辨率 | Doppler resolution |
多路信号分离器 | demultiplexer |
多路信号分离电路 | demultiplexing circuit |
多路存取时分 | multiple access time-sharing |
多载波相位编码脉冲分辨率 | resolution of multicarrier phase-coded pulse |
多部分的 | manifold |
大气层外再人拦截器分系统 | exoatmospheric reentry interceptor subsystem |
天线传动驱动部分 | antenna drive part |
天线控制部分单元 | antenna control unit |
天线机械分系统 | antenna mechanical subsystem |
天线瞄准分系统 | antenna pointing subsystem |
天顶角分布 | zenith angle distribution |
威胁辐射源信号分析 | threat emitter/signal analysis |
存储分配图表 | memory map |
定位分析中的雅可比行列式 | Jacobian in location analysis |
定带宽分析仪 | constant bandwidth analyzer |
实时数控分析器与处理机 | real-time digitally controlled analyzer and processor |
实时电磁数字控制分析与处理器 | real-time electro-magnetic digitally controlled analyzer and processor |
实时频谱分析仪 | real time spectrum analyzer |
密码与分析 | crypt & analysis |
射束波束分裂器 | beam splitter |
射频分集 | RF diversity |
射频监视与电子对抗分系统 | radio frequency surveillance/electronic counter measure subsystem |
尖头信号分析 | pipology |
差分型信号 | differential mode signal |
差波束差波瓣分离角 | separated angle of difference beam |
带内频率分配 | in-band frequency assignment |
幅度分布函数 | amplitude distribution function |
幅度分离器 | amplitude separator |
幅度分辨率 | amplitude resolution |
干扰分析与发射频率选择 | jamming analysis and transmission selection |
干扰分析与发射频率选择 | jamming analysis and transmission selecting |
干扰分辨力 | disturbance resolution |
干扰分辨率 | interference resolution |
干扰分量间隔 | jamming component gap |
干扰频谱分析 | spectrum analysis of jamming |
平面波分解 | plane wave resolution |
幻象影电路多谐振荡器分频器 | phantastron divider |
广义矩形时频分布 | generalized rectangular time-frequency distribution |
广域差分 GPS | wide area DGPS |
序分多址 | sequence division multiple access |
度、分、秒 | degree, minute, second |
开关式功率分配器 | switched power-divider |
开环微分电压增益 | open-loop differential voltage gain |
异步时分多路调制器 | asynchronous time division multiplexer |
彩色定向脉冲分离器 | color phasing amplifier |
微分功率表 | Johnson power meter |
微分因数 | differential factor |
微分增益校正 | differential gain correction |
微分放大器 | differentiator amplifier |
微分时间 | differential time |
微分灵敏度 | variational sensitivity |
微分相位修正 | differential phase correction |
微分相位校正 | differential phase correction factor |
微分磁导率 | incremental permeability |
微分计数率 | differential counting rate |
微波分频器 | microwave frequency divider |
微波功率分配 | microwave power dividing |
微波自动网络分析仪 | microwave automatic network analyzer |
微积分方程 | integrodifferential equation |
态势与天线控制分系统 | attitude and antenna control subsystem |
恒阻分波器 | constant-resistance separation filter |
情报分发 | intelligence dissemination |
情报分析与存储检索 | intelligence analysis/storage and retrieval |
情报信息分析中心 | information analysis center |
战斗防御情报分析中心 | battle-defense information analysis center |
战术作战用可编程分层 UHF 通信系统 | programmable layered communication for UHF tactical operation |
战术电子战分部 | tactical EW division |
战术电子战中队 XX 分遣队 | tactical electronic warfare squadron detachment |
战术相关应用数据分发系统 | tactical related applications TRAP data dissemination system |
扫描分析技术 | scan analysis technique |
扫频频谱分析仪 | sweep frequency type spectrum analyzer |
按单位分配法 | unit distribution |
接收机分析研究法 | receiver analysis methodology |
控制分发系统 | control distribution system |
搜集管理与分发 | collection management and dissemination |
收发分设分置雷达 | semi-active radar |
收发分设分置雷达 | bi-static radar |
改型通用用途部分 | retrofit general purpose element |
数字分布网络 | digital distribution network |
数字式分解 | digital resolving |
数字式故障分析仪 | digital fault analysis |
数据分配器 | data distributor |
数据处理与分析 | data reduction analysis |
数据收集与分发单元 | data collection and distribution unit |
数据链分系统 | data link subsystem |
数据链易损性分析 | data link vulnerability analysis |
斑点大小分辨能力 | spot size resolution |
方位分辨力 | bearing discrimination |
方位干扰分析 | directional jamming analysis |
无源声信号分类 | passive acoustic classification |
无类地址分配 | classless addressing |
无线电频率分配表 | radio-frequency authorization |
时分制无线电中继系统 | time division radio relay system |
时分多路系统 | time-division multiple access system |
时分干扰 | time division jamming |
时分操作系统 | time-sharing operating system |
时分系统 | time-shared system |
时分选择 | time-sharing option |
时分遥测系统 | time division telemetry system |
时隙再分配 | time slot reallocation |
显示分辨力 | display resolution |
普朗克分布 | Planck's distribution |
晶体滤波器差拍分析器 | crystal-filter heterodyne analyser |
暂态分析法 | transient analysis method |
"曲台克斯"多频段VHF, UHF, L, S目标分辨和鉴别雷达 | TRADEX (radar) |
最小可分距离 | minimal separable distance |
最小可分距离 | minimum separable distance |
有限差分时域 | finite difference time-domain |
未分带透镜 | unzoned lens |
未调制脉冲分辨率 | unmodulated pulse resolution |
未调制脉冲分辨率 | resolution of unmodulated pulse |
机载分子电路集成雷达 | molecular airborne integrated radar |
机载高分辨率监视与识别雷达 | Hughes integrated synthetic aperture radar |
极化分离器 | polarization resolver |
极坐标场分布 | polar distribution of field |
极限分辨角 | limiting resolving angle |
查普曼分布 | Chapman distribution |
标称分辨度力 | nominal resolution |
检波前数据分析 | analysis of predetection data |
检波后分类 | postdetection sorting |
概率分配表 | frequency allocation list |
欧洲数据分析中心 | European Data Analysis Center |
正交频分多路技术 | orthogonal frequency division multiplexing |
正交频率多路区分传输 | orthogonal frequency division multiplexing |
正常分辨率 | normal resolution |
每分钟内转数 | revolution per minute |
毫米波分路滤波器 | millimeter wave channel branching filter |
毫米波频谱分析器 | millimeter wave spectrum analyzer |
水平分辨力析像能力、清晰度 | horizontal resolution |
波形分集 | waveform diversity |
波形时基分解 | waveform time base resolving |
波束分离器 | beam spliter |
波束分裂 | beam splitting |
S、X波段极化分集多参数气象雷达 | CP-2 (radar) |
波道分配命令 | channel assignment order |
泰勒分布阵列天线 | Taylor distribution array antenna |
测距分辨率 | ranging resolution |
海军爆炸物处理技术分部 | naval explosive ordnance disposal technology division |
特征值分析 | eigenvalue analysis |
球面分层大气层 | spherically stratified atmosphere |
瓦分贝以 1 瓦为零电平的分贝 | Decibel Watt |
生存力与易损性信息分析中心 | survivability/vulnerability information analysis center |
电力分配与控制 | power distribution and control |
电压分解 | voltage resolving |
电子分发管理系统 | electronic dissemination management system |
电子卫星图像分析中心 | electronic satellite image analysis center |
电子对抗情报分析 | analysis of electronic warfare intelligence |
电子干扰或反干扰分析仪 | analyzer ECCM or ECM |
电子情报分析 | ELINT analysis |
电子情报分析报告 | ELINT analysis report |
电子情报技术分析工作组 | ELINT technical analysis working group |
电子情报搜集与分析 | electronic intelligence search and analysis |
电子战分析科目 | EW analyst course |
电子战分队 | electronic warfare element |
电子搜集分站 | electronic collection outstation |
电子电信分委会 | electronic and telecommunications subcommittee |
电磁分析程序 | electromagnetic analysis program |
电磁分量部件 | electromagnetic component |
百万分之一 | particle per million |
监视和分析接收系统 | surveillance and analysis receiving sys-' tem |
监视雷达分队地面控制进场系统的组成部分 | surveillance radar element |
目标分类 | target classification |
目标分辨和识别试验雷达 | target resolution and discrimination experiment |
目标分配 | target allocation |
目标等级分配 | target class assignment |
目标自动识别分析 | automatic target recognition analysis |
盲源分离 | blind source separation |
短脉冲群串分离器输出 | burst separator output |
积分噪声系数 | integrated noise factor |
积分折射率仪 | integral refractive index meter |
积分环节要素 | integral element |
积分相消比 | integrated cancellation ratio |
积分脉冲选择器 | integrating divider |
程序分频器 | program divider |
空分多址 | space divide multiple access |
空中交通管制雷达分队 | air traffic control radar unit |
空中应答器分系统 | airborne transponder subsystem |
空间分集接收法 | space diversity reception |
空间时分 | spatial time sharing |
空间电荷分布 | space charge distribution |
纯时分指定 | pure time-sharing assignment |
线性调频脉冲分辨率 | resolution of LFM pulse |
线状分布 | line-stated disposition |
统计通信分析技术 | statistical communication analysis technique |
网络战分队 | network warfare element |
网络攻击分队 | network attack element |
群分波器 | band splitting filter |
考斯塔斯频率步进的脉冲分辨率 | resolution of Costas frequency stepped pulse |
联合战术信息分发系统网络库 | JTIDS network library |
联合部队空军部分指挥官 | joint force air component commander |
脉冲数/分钟 | pulses per minute |
脉冲分压衰减器 | pulsed attenuator |
脉冲分离电路 | pulse separating circuit |
脉冲分类 | pulse sorting |
脉冲之间的间隔分布 | distribution of the interval between pulse |
脉冲响应分析仪 | impulse response analyzer |
脉冲干扰分离与消隐 | pulse interference separation and blanking |
脉冲振幅幅度分析器 | pulse height analyzer |
脉冲核磁共振分光计 | pulsed NMR spectrometer |
脉冲积分积累 | pulse-to-pulse integration |
脉冲积分积累 | pulse integration |
脉冲重复间隔分析技术 | PRI analysis technique |
脉冲重复频率分解 | pulse repetition frequency stripping |
脉冲重复频率分集 | pulse repetition frequency diversity |
脉间分析 | interpulse analysis |
自动分发 | auto-distribution |
自动图像传送分系统 | automatic picture transmission subsystem |
自动干扰分配系统 | automatic countermeasure dispensing system |
自动数据分系统 | automatic data subsystem |
自动检测中的目标分辨力 | target resolution in automatic detection |
自由统计分布 | free statistics distribution |
航天-地面无线电中继分系统 | space-to-ground link subsystem |
英国陆军训练单元分部 | British army training unit subdivision |
莱瑞分布率 | Larry distribution rate |
行分频器 | line divider |
视频数据分布网络 | video data distribution network |
角度分选 | angular sorting |
计算机与数据流综合分析系统 | computation and data flow integrated subsystems |
计算机软件部分 | computer software unit |
训练支援分系统 | exercise support subsystem |
训练时间分析系统 | exercise timeline analysis system |
记数式数字分频电路 | digital frequency dividing circuit |
误差信号分解器 | error signal resolver |
调制分类 | modulation classification |
调制分集 | modulation diversity |
调频波分布波段分配 | frequency modulation allocation |
调频网台分选 | FH net sorting |
谐波分析器 | wave analyzer |
谐波分析表 | harmonic analysis schedule |
谐波分离区分 | harmonic separation |
谐波失真百分比 | percentage of harmonic distortion |
超分辨 | super resolution |
超视距探测、分类与目标指示 | over the horizon detection, classification, and targeting |
距离分压器电位计 | range potentiometer |
距离分布 | range distribution |
距离分级标志 | range step |
距离分辨力 | range resolution |
距离分辨力 | distance resolution |
距离校正分压器 | range correction potentiometer |
距离积分器 | range integrator |
距离跟踪分压器 | range tracking potentiometer |
转/分 | r/min (revolutions per minute) |
转数/分钟 | revolution per minute |
近实时分发 | near real time dissemination |
连接线分配链路 | joining-line distribution link |
连续波信号分辨率 | resolution of CW signal |
逆分选 | inverse sorting |
通信与数据分系统 | communication and data subsystem |
通信与数据分系统 | communications and data subsystem |
通信与跟踪分系统 | communication and tracking subsystem |
通信区域分布方位 | communication range azimuth |
通信监控分系统 | communications monitoring and control subsystem |
部分追踪 | subtrace |
部分频带干扰机群机组 | fractional band jammer |
重复间隔分选 | PRI sorting |
防空分区 | antiaircraft sector |
防空区与分区空中作战中心 | region/sector air operations centers |
陆军分布式通用地面系统 | distributed common ground system-army |
陆军数据分发系统接口 | army data distribution system interface |
随机杂乱 J 分布 | random distribution |
随机分布光束 | random bundle |
随机存取分离地址 | random access discrete address |
随机相位分布 | random phase distribution |
集成功率分配器 | integrated power divider |
非谐波频率部分元件 | inharmonic frequency component |
非连续分布 | discontinuous distribution |
非连续正交频率多路区分传输 | noncontinuous orthogonal frequency division multiplexing |
面分布目标 | surface distributive target |
预检测积分时间 | predetection integration time |
预警威胁分析显示 | early warning threat analysis display |
预警威胁分析显示器 | early waving threat analysis display |
频分交换开关系统 | frequency division switching system |
频分多路 | frequency multiplex |
频分多路 | frequency-division multiplex |
频分多路与调频 | frequency division multiplex/frequency modulation |
频分多路传输 | frequency multiplex |
频分多路复用器 | frequency division multiplex |
频分多路话音通信 | frequency division multiplex voice communication |
频分多路遥测系统 | frequency division multiplexing telemetry system |
频分式假目标产生器 | frequency diversity false target generator |
频分技术 | frequency diversity technique |
频分接收法 | frequency diversity reception |
频分雷达 | frequency diversity radar |
频光谱分布分析仪 | spectral distribution analyzer |
频域分析法 | analysis method of frequency domain |
频带分离器选择器 | band separator |
频带分配 | frequency planning |
频段频率分配表 | frequency allotment |
频段频率分配表 | frequency allocation |
频率分割制 | frequency division system |
频率分路器 | multiplexer |
频率分辨力 | frequency resolution |
频率分配及使用 | frequency allocation and use |
频率分集带宽 | frequency diversity bandwidth |
频率二等分 | frequency halving |
频率划分电路 | frequency sharing circuit |
频率区分倍增器 | frequency separation multiplier |
频率控制与分析 | frequency controlled and analysis |
频率测量频谱分析器 | frequency measuring spectrum analyzer |
频率特性分析仪 | frequency response analyzer |
频谱分布函数 | spectrum distribution function |
频谱分布曲线 | spectral distribution curve |
频谱分析噪声雷达 | frequency spectrum analysis noise radar |
频谱特征分析 | spectrum characteristic analysis |
飞行警报与分析系统 | flight warning and analysis system |
驱逐舰声呐分析中心 | destroyer sonar analysis center |
高分辨力图像传输 | high resolution picture transmission |
高分辨力地形信息 | high resolution terrain information |
高分辨力脉冲多普勒雷达 | high resolution pulse Doppler radar |
高分辨力雷达 | very-high-resolution radar |
高分辨成像 | high resolution imaging |
高分辨率力 | high resolution |
高分辨率显像管 | high resolution cathode ray tube |
高分辨红外探测仪 | high resolution infrared sounder |
高分辨红外辐射仪传感器 | high resolution infrared radiometer sensor |
高分辨红外辐射探测仪 | high-resolution infrared radiation sounder |
高位地址部分 | upper address part |
高增益分布式接收机 | high gain distributed receiver |
高度分辨能力 | elevation resolution |
高斯分布概率密度函数 | Gaussian distribution probability density function |
高距离分辨力单脉冲 | high-range-resolution monopulse |
高距离分辨率地面动目标显示 | high range resolution-ground moving target indicator |
魏格纳-维尔分布 | Wigner-Ville distribution |