Numerical simulations are conducted on the imaging of Fourier telescopy system with equal-spaced antenna array in T shape geometries, and the imaging quality is evaluated by the Strehl distribution of different targets. The results testify that the array with the same numbered antennas in each of the three arms gains the target's spectrum distribution that is the most symmetrical in the horizontal and vertical directions, and can obtain good imaging quality and high Strehl ratio, for antenna arrays of such structure,the images are reconstructed for multiple objects with 3 to 18 antennas in each arm. It is found that,while the single arm's antenna number is no more than 10, increasing the number of antennas can obviously improve the reconstructed image's quality and distinguish the object more easily. For the single arm's antenna number around 10, the reconstruction has good target recognizability, and while the number is larger than 10, increasing the number of antennas has few effects on improving the target recongnizability.%对傅里叶望远术系统进行了多个目标的成像过程模拟,针对不同配置的T型等间距天线阵列,利用Strehl值作为判据对系统成像质量进行分析.计算和重建结果表明:T型三等臂天线阵列采集到的目标频谱分布在水平和竖直方向的均衡性最优,重建像及Strehl值对各种目标均较好;在此三等臂结构下,设置单臂天线个数为3～18,对多个目标进行重建.由重建像及其Strehl值分布曲线的分析可见,单臂天线个数小于等于10时,天线数的增加将明显提高重建图像的质量和可识别性;单臂天线个数接近10时,重建的目标像已具备较好的可识别性;单臂天线个数大于10后,天线总数增加对提高目标可识别性作用有限.
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