The e - plane and h - plane half power beamwidths of all linear arrays are 15 ~ 25 and 65 ~ 75 , respectively . the arrays have achieved expected goals and fit for vehicle anti - collision radar 所有线阵的e面和h面半功率波瓣宽度分别在15 ~ 25之间和65 ~ 75之间。
This paper has successfully adopted the above method to synthesize an equally - spaced linear array , and then has extended its application into the synthesis of shaped beam patterns from planar arrays 本文正是采用此方法首先得到了线阵综合的结果,并将它推广运用到面阵综合的情形。
The performance of beamspace high - resolution direction - of - arrival ( doa ) estimation is analyzed . a dense beamspace music ( dbmusic ) algorithm for the uniform linear array ( ula ) is proposed 深入分析了波束域高分辨方位估计性能,捉出了一种基于均匀线列阵的密集波束域music ( dbmusic )法。
Interventions : in addition to clinical evaluation , a standard ultrasonographic examination of the scrotum was performed using a linear array transducer operating at a frequency of 8 . 0 mhz ( acuson sequoia 512 ) 此外:作为附加的临床评估需要,一个标准的超声波记录将测试小弟弟,用8m赫兹的频率通过传感器测试。
The simulation results show the validity of this algorithm . 2 . a novel 2 - d esprit method based on three orthogonal linear arrays is proposed to estimate 2 - d doa of different users 提出了一种新的基于垂直阵列结构的二维capon 、 music和esprit方法来估计信号的doa ,此方法只需三个均匀直线阵就可估计用户的二维doa 。
The packaging experiments of linear array diode laser were carried out . the output power of 100w with duty cycle of 20 % is achieved in q - cw mode , the life time of which reaches 2 . 19 109 shots 实验封装出峰值功率100w 、占空比20的准连续线阵二极管激光器,寿命达2 . 19 10 ~ 9次;同时封装了连续40w线阵二极管激光器。
A new topology of antenna array named arcuate array is proposed . as the analysis shows , the arcuate array has its particular advantages , and the linear array and circular array can be unified into arcuate array family 接着提出了弧形智能天线阵列结构,分析了弧形阵列的独特优点,并把直线阵和圆阵统一到弧形阵列结构体系中。
In this dissertation , a de - coupling analytical method is presented based on the actual measured pattern in aspect with linear arrays , then the method is applied in four - element array to yield satisfactory results 对于线性阵列,本文给出了一种基于实测方向图的去耦合分析方法,并且使用这种方法对4元线阵列进行了去耦合分析,得到了令人满意的结果。
Finally the horn is chosen as the array element to revise that synthesis result . the simulation results both from the equally - spaced linear array and from the square array prove that the above method is flexible and effective 为了使问题简化,在综合过程中假设阵元都是全向性的,最后再选择一定数量的圆锥喇叭作为阵元对方向图进行了数值模拟和仿真。
With the rapid development of spationautics and remote sensing technology , a plenty of satellite images with high precision are produced , among which the linear array ccd image has satisfied the requirement of photogrammetry 航天遥感技术的迅猛发展,产生了大量高精度的遥感卫星影像,特别是线阵ccd影像在理论和技术上都已达到了摄影测量要求的水平。