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- Study on SAR Antenna Side Lobe Reconnaissance 对SAR卫星天线旁瓣信号侦察研究
- antenna side lobe 天线旁瓣
- The effect of antenna parameters on the beamwidth and side lobe level is analyzed. 分析了天线参数对主瓣宽度和副瓣电平的影响；
- 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；
- For simply the design adopts equal interval antenna array, adopts unequal scope to debase the side lobe level, adopts unequal phase to realize tilt. 本文为了简单起见采用等间距阵列天线，采用不等幅度来降低副瓣，采用不等相位来实现下倾。
- In the Adaptive Side Lobe Cancellation(ASLC) system of general radar, the mismatched phase of transmission line between the antenna and the former of the receiver can not be ignored usually. 在常规雷达加装的自适应旁瓣相消(ASLC)系统中，天线至接收机前端馈线部分的相位不一致性通常不可忽略。
- Not equational power divider is mostly adopted to decrease the side lobe. 不等分功分器主要用来在电调天线中实现副瓣抑制。
- A M - band CMFB with a side lobe of about 45 dB was designed using the optimum equal wave method. 通过分析M带滤波器组和M带复用转换器的完全重构条件;用最优等波纹法设计了一个旁瓣约为45 dB的M带余弦调制滤波器组.
- The conventional adaptive side lobe cancellation algorithm and eigenspace-based technique are discussed. 讨论了常规自适应旁瓣对消算法(LCMVB)和基于特征空间的技术。
- Cassegrain antenna is a kind of dual-reflector antenna, with characteristics of high-gain, narrow-beam, suppressed side lobes and agility in designing. 卡塞格伦天线是一种双反射面天线,其特点是高增益、锐波束、低旁瓣、设计灵活。
- Based on uniform line array,the sonar equation of active sonar beam main lobe and side lobe interfered by noise-jammer are presented. 研究了噪声干扰器对鱼雷主动声呐的对抗原理,以等间隔直线阵为例,分别给出了干扰器对鱼雷主动声呐主瓣和旁瓣的干扰方程。
- This method resolves the problem of signal detection with high side lobe levels, but loses information of the power spectrum density. 这样解决了高旁瓣下信号检测的问题，但却丢失了功率谱密度信息。
- In this paper, a robust adaptive beamformer in the presence of array imperfections is presented by improving the block matrix of the generalized side lobe canceller. 该文通过对广义旁瓣相消器的阻塞矩阵加以改进,提出了一种对阵列天线误差有良好稳健性的自适应波束形成器。
- In the case of maintaining the array two main plane side lobe equal to ideal ones, the array average side lobe level (AVSLL) is optimized by the linear programming. 在保证失效补偿后两主平面副瓣性能完全恢复的情况下 ,用线性规划方法对空间平均副瓣进行了优化。
- 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。
- Calyx 4-8 mm, apex of upper side lobed, primary veins 2, reaching lobe apex. 花萼4-8毫米，浅裂的上面边的先端，主脉2，到达裂片先端。
- The conclusion is that suitable departure helps to improve the resolution of the imaging, and not to bring any unreasonable side lobe that influences the point spread function. 结果表明，适当的偏心量有利于提高环状干涉条纹成像的分辨率，又不致于产生对点扩展函数有影响的旁瓣。
- Based on digital beamforming (DBF) system, this paper presents a new side lobe cancellation scheme on the receiving direction of DBF, by which the active jamming can be effectively rejected without reducing signal detection and measurement acccuracy. 提出了一种基于数字波束形成 (DBF)技术进行副瓣对消的新方法。 与传统的天线副瓣对消相比 ,该方法采用的对消函数与副瓣拟合得较好 ,因而对消剩余较小 ,而且无需大量的计算即可自适应地形成零点 ,能很好地抑制从副瓣进入雷达系统的干扰。
- The simulation results show that the ambiguity is depressed while the beamwidth and the side lobe level are well controlled via this method, which is quite helpful to spaceborne SAR system designing. 仿真结果表明，这种方法很好地抑制了模糊度，同时控制了主瓣宽度和副瓣电平，对星载SAR系统设计具有实际意义。
- Reception improved because of the new antenna. 接受效果因有新天线而得到改善。
