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信号形成
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  signal formation
     On this basis, a new function signal generator based on the distribution storage type-digital method is devised in this article. It contains the distribution storage of the sample data of the function waveform, read-out of data and signal formation, program control of the frequency and the amplitude.
     基此 ,本文设计了一种基于分布存储式数字法的新型函数信号发生器 ,它包括分布存储函数波形的抽样数据、数据读取和信号形成、频率和幅度程控等。
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  signal shaping
     The transmission performance of OQAM (Orthogonally Multiplexed QAM) system isimproved by application of staggered delay. The baseband signal shaping which satisfies the orthogonality of staggered OQAM system is discussed.
     本文首先应用时延参差技术改善正交多路复用QAM(OQAM)系统的传输性能,并讨论了满足参差OQAM系统正交性的基带信号形成
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  signals form
     Laser proximity fuse countermeasure technology includes mainly the high repetition frequency laser active jamming. Laser jamming unit transmits UH repetition frequency laser jamming pulses to incoming missile, makes laser jamming signals enter previously in the laser proximity receiving FOV in order to suppress the real target echo signals, form the effective range deception, and to explode the missile in advance.
     激光近炸引信对抗技术主要采用高重频激光有源干扰技术 ,由激光干扰机对来袭导弹发射高重频激光干扰脉冲 ,使激光干扰信号在远距离上提前进入激光近炸引信的接收视场 ,以压制真正的目标回波信号 ,形成有效的距离欺骗 ,引起导弹的早炸 .
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  “信号形成”译为未确定词的双语例句
     Generating Multiple Target Signals for Millimeter-Wave Radar Simulator Based on FPGA
     基于FPGA毫米波雷达模拟器的多目标信号形成技术
短句来源
     The DSP+FPGA structure was applied in system, the delay between the reflected waves was realized with FPGA.
     多目标信号形成系统采用了DSP+FPGA结构,用现场可编程门阵列(FPGA)实现回波之间的时延。
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     However,the cancer cells may downregulate Fas expression by themselves to resist the death signals transduced by FasL expressed by the immune effector cells and cancer cells,forming the Fas resistance mechanism---the prerequisite of the Fas counterattack,and therefore inhibiting the apoptosis of the cancer cells.
     而且癌细胞可下调Fas表达 ,抵御免疫效应细胞及癌细胞自身表达FasL所传递的死亡信号 ,形成“Fas抵抗” ,并因此抑制癌细胞凋亡。
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     This paper describes the key points of Fiber_FISH technique, the probable nature of the beaded fluorescent spots and the application of Fiber_FISH technique in plants genome research.
     描述了Fiber_FISH的技术要点 ,念珠状信号形成的可能原因 ,以及这一技术在植物基因组研究中的应用
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     Conclusion On T 1WI, typical epidermoid cysts are manifested as low, inhomogeneous signal, while atypical epidermoid cysts are marked by high signal, which is due to the high concentration of the protein not due to the lipoids.
     结论 典型常见的表皮样囊肿T1WI为低信号 ,信号欠均匀 ; 非典型的表皮样囊肿T1WI呈高信号 ,信号形成原因是高浓度蛋白质所致 ,并非脂类物质。
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      signal formation
    Comparing the experimental results with the simulation data, it was possible to trace the mechanism of light-signal formation in the phoswich.
          
    Signal Formation in Laser-Enhanced Atomic Ionization Spectrometry with Laser Sampling into the Flame
          
    The role played by the electron tunneling on macrocontacts during the signal formation in the method of contact electroresistance (CER) is considered.
          
    We find that there is good agreement between the calculated and experimentally observed moments of echo signal formation.
          
    This article focuses on the physical principles, on the signal formation, and on the resulting properties of balanced SSFP.
          
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      signal shaping
    Investigation of signal shaping in opticoacoustic spectrometers with pulse excitation
          
    Extremely wideband signal shaping using oneand two-dimensional nonuniform nonlinear transmission lines E.
          
    EWB signal shaping is a hard problem for several reasons.
          
    Electronics noise contributions should not degrade the calorimeter performance since they can be minimized with suitably chosen signal shaping time.
          
    Given a signal shaping algorithm, the higher the dimension of the parameter vector the lower is the error.
          
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      signals form
    A mechanism is proposed to explain how these memory signals form.
          
    These signals form neuronal mosaics reflecting the dynamics of cortical activity as combination patterns.
          
    For a nonideal linear detector the error is not a single-valued function of the measured and calibrating signals' form factors and it is determined by the relationships derived above.
          
    Coupled signals form two directed edges between them in opposite directions.
          
    For a 6-channel sensor, 6 independent sensor signals form a 6-dimensional vector.
          
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    This paper deals with a method forming the error signal to control the direction of the longitudinal axis of a vehicle by way of the optimal rotation axis. In order to control rotation around the longitudinal axis, the ways to form the error signals in the case of roll stability and slope stability are considered. The analytical formulae are developed in detail. As examples of application of this method we have also discussed how to form the error signals sensored by a three gimbal platform or a group of stra-pdown...

    This paper deals with a method forming the error signal to control the direction of the longitudinal axis of a vehicle by way of the optimal rotation axis. In order to control rotation around the longitudinal axis, the ways to form the error signals in the case of roll stability and slope stability are considered. The analytical formulae are developed in detail. As examples of application of this method we have also discussed how to form the error signals sensored by a three gimbal platform or a group of stra-pdown rate gyros mounted in the vehicle. Corresponding block diagrams are presented.

    本文重点讨论采用所谓最佳旋转轴方法来形成飞行器纵轴指向控制的误差信号,对于绕飞行器纵轴本身转动的控制主要讨论了滚动稳定和倾斜稳定两种情况下误差信号的形成。详细推导了它们的计算公式。作为这个方法应用的例子,我们还讨论了如果飞行器上安装一个三轴平台或一组捷联式速率陀螺时,怎样由它们敏感的信号形成姿态控制误差信号,并给出了相应的姿态控制系统原理结构图。

    Test-card for colour TV is a signal widely used to evaluate visually the quality of a TV set. Based on the microprocessor Z-80 a test-card generator for colour TV with synchronizing is realized. By taking advantage of microprocessor programming, the techniques of computer, digital and IC are combined to simplify greatly the system circuits which originally need a lar-ge quantity of logical gates. Now, the functions of control and the generation of signal, such as compound synchronous signal, compoud blanking...

    Test-card for colour TV is a signal widely used to evaluate visually the quality of a TV set. Based on the microprocessor Z-80 a test-card generator for colour TV with synchronizing is realized. By taking advantage of microprocessor programming, the techniques of computer, digital and IC are combined to simplify greatly the system circuits which originally need a lar-ge quantity of logical gates. Now, the functions of control and the generation of signal, such as compound synchronous signal, compoud blanking signal, etc, are realized with the help of CPU programming to get the advantages of low cost, high reliability and small size. All system programs are stored in EPROMs and thus any wanted changes in the pattern of test card can be conveniently realized by changing programs, and it is not necessary to change the whole con-figuration of the hardware circuits. The system can also be transferred into different types of non-standard TV synchronizers and test-card generators by only changing the programs.

    彩色电视测试卡是一种以直观方式评价彩色电视接收机质量的测试信号.我们以Z80微处理机为核心,组成了彩色电视同步信号和彩色测试卡发生装置。将微机技术、数字技术和模拟技术结合在一起,并发挥微机软件的作用,使原先需要使用大量组合和时序逻辑电路才能产生的各种信号(如复合同步、复合消隐等同步信号和圆、彩条、灰条、时钟等测试卡信号)尽可能地用软件直接产生或用软件简化控制电路,通过“以软代硬”来实现整个系统的小型化、高可靠、低成本。所有软件均固化于EPROM中,通过改变软件即可方便地改变测试卡图形的排列和图案的内容而不必大量地改变硬件结构。同样,只需修改软件中同步信号形成程序,便可按需要产生各种非广播电视标准的同步信号和测试卡。

    A new modulation technique, named double baseband processing-offset quadrature phase shift keying (DBP-OQPSK), is presented in this paper. The principle of the generation of DBP-OQPSK baseband signals is illustrated. The measured eye diagram of DBP-OQPSK system is given. The power spectrum of DBP-OQPSK signal and the error probability performance of DBP-OQPSK are discussed also. The results show that the power and bandwidth efficiency of the DBP-CQPSK which has a quasi-constant envelop is. superior to that of...

    A new modulation technique, named double baseband processing-offset quadrature phase shift keying (DBP-OQPSK), is presented in this paper. The principle of the generation of DBP-OQPSK baseband signals is illustrated. The measured eye diagram of DBP-OQPSK system is given. The power spectrum of DBP-OQPSK signal and the error probability performance of DBP-OQPSK are discussed also. The results show that the power and bandwidth efficiency of the DBP-CQPSK which has a quasi-constant envelop is. superior to that of OQPSK, MSK and IJF-OQPSK in nonlinear and adjacent-channel interference environment.

    本文提出了一种新的数字调制方式,称为两次基带处理——偏移正交相移键控(DBPOQPSK)。文中说明了DBP—OQPSK基带信号的形成原理,并给出了实验结果,此外还讨论了DBP—OQPSK信号的功率谱密度,以及DBP—OQPSK系统的误码性能。结果表明,在有邻道干扰的非线性信道中,具有准恒定包络的DBP—OQPSK的功率和频谱效率均优于IJF—OQPSk。

     
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