超宽带系统等距线阵的方向图

给出了高斯脉冲波形的自相关函数和能谱密度函数等时域、频域基本特性，建立了超宽带系统的等距线阵接收模型．并以接收高斯脉冲为例，从信号能量的角度定义了天线阵列的峰值幅度方向图、峰值功率方向图和能量方向图。对等距线阵的各种方向图进行了仿真计算，结合仿真结果对各种方向图的角度分辨率进行了比较，各种方向图的公式定义和仿真结果都表明等距线阵的峰值功率方向图具有更好的角度分辨率，为阵列天线在超宽带系统中的应用研究奠定了基础。

Direction Patterns of Uniform Line Array in Ultrawide-band Systems

The time - domain and frequency - domain properties such as autocorrelation and energy spectrum functions of the Gaussian pulse are derived. A receiving model of uniform line - array is provided for ultrawide - band systems. Direction patterns such as peak - amplitude pattern, peak - power pattern and energy pattern are also derived from the aspect of signal energy for a Gaussian pulse received by the array. Finally, it computes the voltage signals and direction patterns of the array. Simulations and definitions of the array patterns indicate that the peak-power pattern is of better angular, resolution. It prepares theoretical basement for the research of application in ultrawide - band systems for array antennas.