强激光与粒子束2011，Vol.23Issue(3)：611-616,6.DOI:10.3788/HPLPB20112303.0611
傅里叶望远术中天线阵列配置对成像质量的影响
Effects of antenna array configurations on imaging quality in Fourier telescopy
摘要
Abstract
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.关键词
傅里叶望远术/天线阵列/Strehl值/数值模拟Key words
Fourier telescopy/ antenna array/ Strehl ratio/ numerical simulation分类
信息技术与安全科学引用本文复制引用
叶溯,刘艺,吴健..傅里叶望远术中天线阵列配置对成像质量的影响[J].强激光与粒子束,2011,23(3):611-616,6.基金项目
国家高技术发展计划项目 （）
