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数字波束形成技术
相关语句
  digital beam forming
    In modern environment of campaign, radar is requested to deal with electron interference, and phased array radar adopting adaptive digital beam forming (ADBF) technology possess this ability.
    现代作战环境的复杂性要求雷达能对付各种电子干扰,而采用自适应数字波束形成技术(ADBF)的相控阵雷达具备这种应变能力。
短句来源
    Adaptive digital beam forming technology is developing along with digital signals process technology, as a form of space-domain filter it is different from time-domain filter or frequency-domain filter.
    自适应数字波束形成技术是随着数字信号处理技术而发展起来的,它既不同于时域滤波也不同于频域滤波,而是一种空域滤波形式。
短句来源
    Because of it has high main lobe gain, over the lower sidelobe level, correlation receptive technic, adaptive digital beam forming technic, usage flexible control and arrange software, thus extremely add to the difficulties to main lobe jamming for phase array AEW radar.
    由于它具有高的主瓣增益和超低副瓣电平、相关接收技术,加上有的相控阵雷达采用实时自适应数字波束形成技术,使用灵活的控制和排序软件可有效对付多部干扰机,给对主瓣干扰带来极大困难。
短句来源
  “数字波束形成技术”译为未确定词的双语例句
    Application Problem about Digital Beamforming Technology in Radar Engineering
    数字波束形成技术的工程应用问题
短句来源
    Adaptive Digital Beamforming Technique for Large Planar Phased Array System
    平面相控阵系统自适应数字波束形成技术
短句来源
    The adaptive digital beamforming(ADBF) is a good method for control external interference and noise. It can adaptive adjust weights to array antenna according to the distribution of interference and make the received power of interference and noise from antenna least.
    自适应数字波束形成技术是对外部干扰和噪声进行抑制的有效手段,它可以依据当前干扰的分布情况自适应地调节阵列天线的权值,使主波束基本保持不变而使波束副瓣与外干扰的分布相适应,从而保证所接收到的干扰和噪声的功率达到最小,极大地提高输出信噪比。
短句来源
    The technique that the range/Doppler processing and the adaptive digital beamforming(ADBF) combined to extract the information of target echoes while control the effect of interrupt and noise is the emphases in this paper.
    文中重点讨论了将距离/多普勒处理技术与自适应数字波束形成技术相结合,在对方向性杂波和干扰进行有效抑制的同时提取目标回波信号的信息的方法。
短句来源
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  digital beam forming
A design change is being introduced to substitute a digital beam forming network for the analog BFN.
      
Real-time phased array imaging using digital beam forming and autonomous channel control.
      
Transmitters using digital beam forming might need accurate control of the relative phase of a large number of DACs.
      
There has also never been, to our knowledge, any digital beam forming radar flown in space.
      
Their architecture is suitable for the whole algorithm including offset correction, FFT and digital beam forming.
      


This paper discusses two topics in detail for engineering application of digital beamforming technology. (1)Digital Beamforming Feed: Digital beamforming feed is an effective way to reduce equipment. The paper presents the principle and deduces the formulae about weighting in feed for getting satisfactory patterns. (2)Test and Correction about the Amplitude and Phase Errors among Channels: A method to test errors by means of the patterns is given. It can either be used in phased array of cooperation feed,or...

This paper discusses two topics in detail for engineering application of digital beamforming technology. (1)Digital Beamforming Feed: Digital beamforming feed is an effective way to reduce equipment. The paper presents the principle and deduces the formulae about weighting in feed for getting satisfactory patterns. (2)Test and Correction about the Amplitude and Phase Errors among Channels: A method to test errors by means of the patterns is given. It can either be used in phased array of cooperation feed,or space feed.

为了在工程中应用数字波束形成技术,本文深入地讨论了两个问题:(1)数字波束馈源,文中说明了数字波束馈源是减少设备的一种有效方法,给出了它的基本概念,并详细推导了为在主阵面得到需要的方向图时馈源所需的权值计算公式;(2)通道幅相误差的检测和校正,文中给法,该方法既适用于强迫馈电也适用于空间馈电的相控阵雷达。

The phased array radar is a tactical radar, also be used as airborne early warning (AEW) radar (for example APY 3 of E 8A). Because of it has high main lobe gain, over the lower sidelobe level, correlation receptive technic, adaptive digital beam forming technic, usage flexible control and arrange software, thus extremely add to the difficulties to main lobe jamming for phase array AEW radar. The dispersed jamming method can make up overall length of the jamming region at several hundred kilometers.

相控阵雷达是当前广泛采用的一种战术雷达,它可以地面、舰船为平台,也可以飞机为平台。机载平台中,除了作多用途雷达外,也可用作预警机预警雷达(如美E8A中的APY3)。由于它具有高的主瓣增益和超低副瓣电平、相关接收技术,加上有的相控阵雷达采用实时自适应数字波束形成技术,使用灵活的控制和排序软件可有效对付多部干扰机,给对主瓣干扰带来极大困难。对相控阵雷达干扰有多种方法,本文提出一种分布式干扰方法,即沿预警飞机航行方向分布站的方法。这样可对预警机相控阵雷达构成长达几百公里的干扰区。

In this paper, we analyze the methods of estimating DOA (direction of arrival) of target signals, then propose that it is available for using the digital beam forming technique in the projectile system. Aimed at the problem of low signalnoise ratio, a modified method is given by substituting cycle cross correlation matrix for cross corelation one. Montecalo trials demonstrate that this method has superior performance of noise suppression.

通过对目标方位识别方法进行分析 ,指出在弹载探测系统中可采用数字波束形成技术实现其目标方位识别 ,针对其低信噪比问题 ,采用循环相关矩阵代替协方差矩阵 ,仿真试验表明该方法具有良好的噪声抑制特性。

 
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