The planar slot array antenna can satisfy a radar screen's request for antenna high gain, low side lobe, small volume, and light weight etc. So it gets extensively applied in the airborne radar.
平板裂缝天线可满足雷达系统对天线增益高、副瓣低、体积小、重量轻的要求,所以在机载雷达中得到广泛应用。
Maximum attenuating speed D of side lobe peak value.
最大的旁瓣峰值衰减速度D。
This ratio is called as the side lobe level (expressed in decibels).
这个比值叫做旁瓣电平(以分贝数表示)。
And a new adaptive side lobe cancellation algorithm is also discussed.
探论了一种新的自适应天线旁瓣相消算法。
Generally, side lobe level of a sparse-array at arbitrary position is high.
任意位置稀布阵通常具有较高的副瓣。
However, due to the excrescent side lobe, the current drive efficiency is lower.
但由于存在多余副瓣,驱动效率较低。
With the aid of a computer, curves of beamwidth and side lobe versus the antenna parameters are plotted.
并借助计算机绘出了主瓣宽度和副瓣电平与天线主要参数的关系曲线;
Classical weighting window functions and spectra modification are adopted to suppress side lobe in previous researches.
已有研究多采用经典窗加权和频谱修正进行旁瓣抑制处理。
This paper focuses on the concentric ring fractal array of the low side lobe characteristics in fractal antenna arrays.
在分形阵列天线中重点研究了具有低旁瓣特性的共心圆环分形阵。
It can constrain frequency response of filter Banks to form null at zero frequency point and to obtain minimum side lobe area.
它可强制滤波器组的频率特性在零频形成零点并使旁瓣面积最小。
Cancellation gain of antenna decreases rapidly with increasing of bandwidth of interference in adaptive side lobe cancellation.
在自适应旁瓣相消技术中,天线的相消增益会随着信号带宽的增加而迅速下降。
Because the side lobe of phase array antenna is on the high side, it will be reconnoitred and jammed easily by the electronic warfare system.
相控阵雷达由于阵列天线副瓣偏高容易被电子战系统进行副瓣侦察和干扰。
This paper introduces the pulse compression, side lobe cancellation, clutter suppression, pulse accumulation and CFAR of coherent Radar signal processing.
本文介绍了脉冲压缩、旁瓣抑制、杂波处理、多脉冲积累以及恒虚警检测等雷达信号处理技术。
To overcome the signal effect, we renovate the auxiliary antenna in the conventional side lobe canceller system to two-orthogonal-channel polarization antenna.
为了克服目标效应,将常规旁瓣对消系统的辅助天线改为双极化正交天线。
Result indicates that the spectrum gained from using W-O way comprises much fewer side lobes and achieves higher energy ratio of main lobes to the first side lobe.
结果表明,W - O方法得到的信号频谱比传统加窗具有更少的旁瓣干扰和更高的主瓣-第一旁瓣能量比。
The generation of far side lobe echoes for offset parabolic antenna is analysed in this article, and the experiments have proved the existence of far side lobe echoes.
分析了偏角馈入抛物面天线远旁瓣回波产生的机理,并经实验验证了远旁瓣回波的存在。
Since this method is based on the structure of the generalize side lobe canceller, it is convenient to use its partial adaptive processing to reduce the computation load.
该方法基于广义旁瓣相消器结构,可方便地进行部分自适应,降低运算量。
Theoretically, a column conformal array with small size and few elements to generate a shaped beam with low side lobe and main beam with fixed width and flat top is carried out.
理论上实现了用较少的天线单元,且与小直径圆柱面共形的阵列,激励产生副瓣电平较低、主瓣有一定的宽度且顶部较平坦的波束。
By using the generalized function in the linear array synthesis the direction diagram with approximate flat top in wide Angle region and with or without a single side lobe can be obtained.
将广义函数用于线天线阵综合,可得到广角近似平顶的方向图,亦可得到具有单一付瓣和无付瓣的方向图。
In the process of genetic manipulation, encoding method is improved, fitness function is constructed not only considering nulling depth, but also the side lobe gain to maintain a certain level.
在遗传操作过程中,改进了编码方法,构造的适应度函数不但以一定的零陷深度为目标,还考虑副瓣的增益维持在一定的水平。
The side-lobe cancellation technology is an effective method for suppressing the side-lobe active disturbance.
旁瓣对消技术是雷达中用来抑制旁瓣有源干扰的一种有效手段。
The emphasis in this paper was corner reflector antenna with high-gain, narrow beam and low side-lobe.
选用方向性好、增益高、旁瓣低的角形反射器天线作为本论文的研究重点。
Using this method the side-lobe level is suppressed more through double weighting in time domain.
采用双加权的失配处理分析方法,在时域进一步降低压缩脉冲的旁瓣电平。
Analysis shows that, only when the size of the hole is larger than 0.2 wavelengths will the variation of the antenna gain and the side-lobe level become obvious.
分析发现,只有当孔径大于一定的尺寸(约0 . 2 0个波长)时,天线增益和副瓣电平才会发生明显变化。
Monte Carlo method and the eigen-driven analysis method are combined to simulate the effects of errors on side-lobe level distribution of the Ultra-low side-lobe arrays.
采用本征激励法,在考虑互耦影响下,数值模拟了幅度误差、相位误差、位置误差和不平行度偏差等对超低副瓣阵列天线方向图性能的影响。
The third content of the paper is the method which implements the low side-lobe phased array antenna with different aperture distribution.
文中的第三个研究内容是不同口径分布实现相控阵天线方向图低副瓣的方法。
With the helical antenna and a V-shaped plate antenna as a unit antenna and the second-order hexagon as the array, the antennas are integrated and simulated and get the low side-lobe characteristics.
分别采用螺旋天线和V形平板天线作为单元天线,以二阶六边形为阵列进行综合仿真,得到了比较低的旁瓣。
With the helical antenna and a V-shaped plate antenna as a unit antenna and the second-order hexagon as the array, the antennas are integrated and simulated and get the low side-lobe characteristics.
分别采用螺旋天线和V形平板天线作为单元天线,以二阶六边形为阵列进行综合仿真,得到了比较低的旁瓣。
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