signal n. 1.信号,暗号;信号器。 2.动机,导火线 (for)。 3.预兆,征象。 call signal 【无线电】呼号。 an alarm signal 警报(器)。 an information signal 〔美国〕暴风警报(旗)。 an international code of signals 国际通用信号。 a signal of distress =a distress signal 船只失事信号。 adj. 1.暗号的,作信号用的。 2.显著的,非常的,优越的。 a signal victory [defeat] 大胜[败]。 vt.,vi. (〔英国〕 -ll-) 发信号[警报]给(人、船等);用信号[警报]通知(暴风、危险等);用动作[手势]示意;预示。 a signaling bomb 信号弹。
process n. 1.进行,经过;过程,历程;作用。 2. 处置,方法,步骤;加工处理,工艺程序,工序;制作法。 3.【摄影】照相制版法;照相版图片;三原色印刷。 4.【法律】诉讼程序;法律手续;被告传票,传票。 5.【解剖学】(动植物机体的)突起,隆起,突。 the process of growth 生长过程。 a mental [psychological] process 心理作用。 labour-consuming process 重体力劳动。 film process 影片加工。 offset process 胶印法。 legal process 法律手续。 vermiform process 【解剖学】阑尾,蚓突。 in process 进行着 (changes in process 正在发生的变化)。 in process of time 随着时间的推移;逐渐地。 in (the) process of 在…的过程中 (in process of construction 正在建筑中)。 serve a process on 对…发出传票。 adj. 1.经过特殊加工的;(用化学方法等)处理过的。 2.照相制版的;三色版的。 3.(电影镜头等)有幻觉效应的。 vt. 1.加工;处理,办理;初步分类;储藏(腌肉等);(用化学方法)处置(废物等)。 2.用照相版影印。 3.对…提起诉讼;用传票传审。 a processing tax 〔美国〕 (农产品)加工税。 a processing plant 炼油厂,石油加工厂。 vi. 〔口语〕排队走,列队行进 〔procession 之略〕。
This paper mainly adopt lficw signal and phase coding signal , this kind of signals are used in actual radar system broadly . this article also use the signal into high frequency radar and have achieve to control simulation front for generating signal , receiving signal , and processing signal according to time sequence . all of this have been achieved in real radar system 本文在完成信号产生的基础上,还完成了将信号应用到实际的软件雷达系统中的工作;并在此基础上结合模拟前端将信号的发射、接收、处理按照雷达系统时序控制起来,并在软件雷达系统的研制中达到了初步的成果。
Abstract : in order to process signal in depth and to extract the fault feature from original signal in machinery diagnosis , the graphical display algorithm that can keep the data length of wavelet transform results the same as that of original signal is used . the fault diagnosis of a bend axial piston pump via b - spline wavelet that has linear phase is provided . the results of study demonstrate that the new method has excellent feature and the weak fault signal can be extracted from the strong vibration background of the pump 文摘:采用具有线性相位的b样条小波,应用图形显示算法并结合小波变换快速算法将信号分解到不同的频带上,且分解结果和原信号长度保持一致,可对信号进行深层次的处理,克服了传统的信号处理方法不易提取微弱信息的不足.通过对矿用斜轴式柱塞泵振动信号的分析,分离出了配流副磨损、球铰松动、缸体及泵轴支撑轴承的故障特征,为液压泵的故障诊断提供了依据,并为信噪分离、微弱信号提取及设备的早期故障诊断提供了一条有效途径
The pseudo - random fsk / psk multi - modulation signal and the partly - matched processing signal remain the information of the target of interest . compared with the other processing methods , the partly - matched procession could depict the target ' s information effectively , and could get a higher output snr under a noisy environment . in this dissertation , the deduction and the simulink on the computer of the average ambiguity function of the pseudo - random fsk / psk multi - modulation signal are presented . also , to the partly - matched procession , analysis in theory and simulink on computer are presented . the partly - matched procession applied in radar field is also discussed 较其它处理方法,非完全匹配处理能有效的突出所观测目标的信息,以及在加噪情况下,其具有高的输出信噪比。在论文中,对伪随机fsk / psk复合调制信号的模糊特性进行了推导与仿真,对非完全匹配处理方法进行了理论上的分析以及计算机上的仿真验证,讨论了其在雷达中的应用。