1) cross array
四元十字阵
1.
This CPLD chip EPM1270 was the circuit kernel,and time-delay estimation method based on cross array was adopted to measure the object orientation.
系统硬件电路以CPLD—EPM1270芯片为核心,对目标方位的估计基于四元十字阵列的时延估计法。
2) 4-element cross array
四元平面十字阵
1.
The direction estimation technology of the acoustic target based on 4-element cross array is studied.
阐述了基于四元平面十字阵的声音目标被动定位的原理。
3) four-element cross array
平面四元十字阵
1.
And the comprehensive used four-element cross array was studied mainly.
本文结合直升机和坦克噪声的特点,简化和约定了声目标和阵列模型,研究了被动声定位技术的基本原理,对声阵列理论进行了较为系统的阐述,对应用广泛,较有代表意义的平面四元十字阵进行了重点研究,推导了定距和定向公式及其误差分析公式,对其定位效果进行了仿真。
4) six element acoustic cross arrays
六元十字阵
5) five-element acoustic array
五元十字阵
1.
In this paper, the target localization method based on five-element acoustic array is investigated, the localization equations are derived, followed by the performance analyses.
四元十字阵的测向和测距精度受目标方位角的影响,而五元十字阵就可以克服这一缺点。
6) cross array
十字阵
1.
In order to determine with higher resolution the direction of an underwater moving object, we propose making the signal, which is sent from object and received by a small-size cross array, different from the signals sent from the object in the past.
针对水下目标运动轨迹的测量问题,提出了一种小尺寸十字阵的高精度测向算法,该算法同时利用运动目标载体上产生的单频信号和线性调频信号估计水下运动目标时延;并对小尺寸十字阵的测向算法进行了理论分析和计算机仿真,分析了阵形尺寸、信噪比等参数对测向精度的影响。
2.
In order to locate the object in the sky,this paper improves the method of traditional cross array and signals are decomposed into a series of time-domain signals through wavelet analysis,then the signals are synthesized by wavelet,finaly the method of cross-correlation was applied to the synthesized signals to calculate the delay time to locate the object.
为了确定空中目标的位置,在传统的四元十字阵定位方法的基础上进行了改进,并用小波变换的方法把信号分成不同的频段,然后对分解信号进行重构,利用互相关技术计算时延,进而进行声定位。
补充资料：作竹篱成因把酒其间戏题四十字
【诗文】：
今日偶暄暖，卧闻林鸟呼。
虽思大白饮，未免小苍扶。
柳色动篱外，梅花来座隅。
夕阳红满野，更复倒残壼。
【注释】：
【出处】：
今日偶暄暖，卧闻林鸟呼。
虽思大白饮，未免小苍扶。
柳色动篱外，梅花来座隅。
夕阳红满野，更复倒残壼。
【注释】：
【出处】：
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条