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compression signal
相关语句
  压缩信号
     Based on Linear Frequency Modulated (LFM) pulse compression signal, a system which has two resolution with 1200MHz carrier and 200MHz and 66.7MHz bandwidth, is designed and implemented.
     该文的研究工作以线性调频(LFM)脉冲压缩信号为基础,采用直接巾频产生技术加倍频链技术设计实现了中心频率1200MHz,带宽200 MHz和66.7 MHz的双分辨力LFM雷达脉冲压缩波形产生系统。
短句来源
     Study on correlative detection of LFM pulse compression signal with polarization agility
     极化捷变LFM脉冲压缩信号的相关检测
短句来源
     Analysis of LFM Pulse Compression Signal with Circular Polarization Agility
     圆极化捷变LFM脉冲压缩信号分析
短句来源
     Chaotic Binary-phase Coded Radar Pulse Compression Signal
     混沌二相编码的雷达脉冲压缩信号
短句来源
     Side-lobe suppression of one kind of new pulse compression signal
     一类新的脉冲压缩信号的旁瓣抑制
短句来源
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  “compression signal”译为未确定词的双语例句
     A New Method of Pulse Compression Signal Processing with-50dB Sidelobes
     -50dB旁瓣脉冲压缩信号处理新方法
短句来源
     A digital complex correlaticonnetwork configured with FIR VLSI IMSA100S is designed and it can complete wideband(up to 5 MHz)pulse compression signal procession signal processing realtime.
     利用级联型FIR滤波器IMSA100组成数字复相关脉压网络对多种带宽(带发达5MHz)脉压信号进行实时数字处理;
短句来源
     Another experiment using digital technique demonstrates that the side-lobe of pulse compression signal is restricted by the figure of A/D and D/A convertor. \;
     而用数字方法实现时 ,压缩脉冲最大旁瓣电平还受A/D及D/A变换器位数的限制。
短句来源
     The Research of Radar Pulse Compression Signal Intra-pulse Modulation Characteristics Analysis
     雷达脉压信号脉内特征分析研究
短句来源
     Pulse compression technique includestwo key techniques: the pulse compression signal generation and processing.
     脉冲压缩技术包括脉压信号的产生和处理两个关键的技术。
短句来源
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  相似匹配句对
     The Acquisition, Processing and Compression of Radar Signal
     雷达信号的采集、处理与压缩
短句来源
     Signal Compression (SigComp) Technology and Its Application
     信令压缩技术及其应用
短句来源
     mechanical compression;
     机械性压迫损伤组;
短句来源
     transmission of signal;
     信号的传递 ;
短句来源
     Compression Spring
     压缩弹簧的多目标模糊优化设计
短句来源
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  compression signal
These problems were solved using specially designed transducers and pulse-compression signal processing techniques.
      
If the audiologist does not expect the child to make these adjustments, wide dynamic range compression signal processing will be advantageous.
      


A great many papers about recursion filter of least square estimation have been published. But the results of those papers can only be used for noncouple radar measuring system. The radar range recursion filter formula, which is widely used in present radars, for linear frequency modulated pulse compression signal, has not been formed yet. In this paper, the general formula for radar range data recursion filter is presented, which is derived according to concept of the transfer smoothing matrix of recursion...

A great many papers about recursion filter of least square estimation have been published. But the results of those papers can only be used for noncouple radar measuring system. The radar range recursion filter formula, which is widely used in present radars, for linear frequency modulated pulse compression signal, has not been formed yet. In this paper, the general formula for radar range data recursion filter is presented, which is derived according to concept of the transfer smoothing matrix of recursion filter and reference (8). It can be used for all radar or sonar measuring systems.In addition, the characteristic of α-β-γ traker filter of linear frequency modaluted pulse compression radar range data is analysed and the accuracy about least square recursion filter theory is verified by artificial method. The results hvve proved that this theory has many advantages, such as higher reliablity and stability, and faster restrain oneself than those of referece (2). It is a new useful optimal estimation recursion filter.

许多关于最小二乘递推滤波器的文章已发表,但这些论文的成果只适用于无耦合的雷达测量系统。在现代雷达中,得到广泛应用的线性调频脉冲压缩信号的雷达距离数据递推器公式还未建立。在本文中,建立了雷达距离数据递推滤波器通用公式,它是根据递推滤波平滑转移矩阵的概念和文献[8]推导的。这个公式适用于所有的雷达和声纳测量系统。 此外,分析了线性调频脉冲压缩雷达距离数据α-β-γ跟踪滤波器的性能和利用仿真的方法验证了最小二乘递推滤波器理论的正确性。这些结果证明这个理论具有许多优点,如较高的稳定性,可靠性和较快地收敛,所以比文献所提出的方法好。这种滤波器是一个新的有用的最优估计递推滤波器。

Based on the requirment to low probability of intercept (LPI) radars, this paper presents a new design meathod of biphase coded pulse compression signals.This meathod takes the coherent integration characteristi of codes as the direct optimization object and can be used in waveform desig of LPI-R. Biphase sequences with codelenth about 130 are optimized using this meahod and satisfactory results are obtaind. the results show that 127 is a idae codelenth under this codelenth, the coherent integration peak...

Based on the requirment to low probability of intercept (LPI) radars, this paper presents a new design meathod of biphase coded pulse compression signals.This meathod takes the coherent integration characteristi of codes as the direct optimization object and can be used in waveform desig of LPI-R. Biphase sequences with codelenth about 130 are optimized using this meahod and satisfactory results are obtaind. the results show that 127 is a idae codelenth under this codelenth, the coherent integration peak ratio of mainlobe to sidelobe of 8 codes and 16 codes is 34.12(ab) and 37.22 (db) respectively. when the doppler freqency Fd is zero.ln addition, the other characteristics of these code groups are pretty good, so they can be used in practice.

本文基于低截获概率雷达(LPI—R)对波形的要求,提出了一种用于低截获概率雷达的二相编码脉冲压缩波形的设计方法,该方法是基于以相参积累特性作为码组的最终优化准则。应用该方法对130位左右的码形进行了优化,指出127是个较为理想的码长,在其它指标颇佳的条件下,当目标多卜勒频移f_α=0时,8个码子相参积累后的主副比为34,12(DB),16个(?)子相参积累后的主副比为37、22(DB),基本达到了实用要求,结果较为满意。

The VIBROSEIS sidelobe elimination by using linear FM (frequency-modulated )signal is considered one of the significant approaches for enhancing S/N ratio as well as stratigraphic resolution. The correlation functions of linear FM signal along with a set of mathematic expressions of suchlike sidelobeless pseudo-random correlative wavelets are given in the paper. Based on which to perform the signal optimization by means of computer screening and hence a kind of pseudorandom pulse compression signal(with...

The VIBROSEIS sidelobe elimination by using linear FM (frequency-modulated )signal is considered one of the significant approaches for enhancing S/N ratio as well as stratigraphic resolution. The correlation functions of linear FM signal along with a set of mathematic expressions of suchlike sidelobeless pseudo-random correlative wavelets are given in the paper. Based on which to perform the signal optimization by means of computer screening and hence a kind of pseudorandom pulse compression signal(with no single piece of sidelobe at all)which is apparently easier to do correlation is detected. The multiplication of correlation could be implemented just by pseudo random gating sampling (analog)or data reservation control and rejection (digital). Also, the workability of applying the sidelo-beless pseudo-random pulse compression technique to VIBROSEIS in seismic exploration has been verified through a number of computing practices and ultrasound simulation tests as well.

消除线性调频信号可控震源相关子波旁瓣是提高信噪比和地层分辨率的重要途径之一。本文给出了线性调频信号和一类无旁瓣伪随机信号相关子波的数学表达式。以此为基础,利用计算筛选方法进行信号寻优,找到了一种更便于相关处理的完全无旁瓣伪随机脉冲压缩信号。相关处理乘法可简单地用伪随机门控采样(模拟)或伪随机控制数据保留与剔除(数字)方法实现。本文通过计算仿真与超声模拟实验,证实了在可控震源系统中应用无旁瓣伪随机脉冲压缩技术的有效性。

 
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