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综合孔径射电望远镜冗余基线可见度噪声相关性对灵敏度的影响

张荣玉 阎敬业 武林 吴季

张荣玉, 阎敬业, 武林, 吴季. 综合孔径射电望远镜冗余基线可见度噪声相关性对灵敏度的影响[J]. 空间科学学报, 2021, 41(5): 808-818. doi: 10.11728/cjss2021.05.808
引用本文: 张荣玉, 阎敬业, 武林, 吴季. 综合孔径射电望远镜冗余基线可见度噪声相关性对灵敏度的影响[J]. 空间科学学报, 2021, 41(5): 808-818. doi: 10.11728/cjss2021.05.808
ZHANG Rongyu, YAN Jingye, WU Lin, WU Ji. Impact of the Correlation of Visibility Noise in Redundant Baselines on Radiometric Sensitivity of Aperture Synthesis Radio Telescope[J]. Journal of Space Science, 2021, 41(5): 808-818. doi: 10.11728/cjss2021.05.808
Citation: ZHANG Rongyu, YAN Jingye, WU Lin, WU Ji. Impact of the Correlation of Visibility Noise in Redundant Baselines on Radiometric Sensitivity of Aperture Synthesis Radio Telescope[J]. Journal of Space Science, 2021, 41(5): 808-818. doi: 10.11728/cjss2021.05.808

综合孔径射电望远镜冗余基线可见度噪声相关性对灵敏度的影响

doi: 10.11728/cjss2021.05.808
基金项目: 

国家专项任务(Y91GJC01)和中国科学院前沿科学重点研究项目(QYZDY-SSW-JSC014)共同资助

详细信息
    作者简介:

    张荣玉,E-mail:18366138283@163.com

  • 中图分类号: P161

Impact of the Correlation of Visibility Noise in Redundant Baselines on Radiometric Sensitivity of Aperture Synthesis Radio Telescope

  • 摘要: 综合孔径射电望远镜可见度噪声之间的相关性不但影响灵敏度的大小,而且影响阵列冗余对灵敏度的优化作用.本文研究对可见度噪声相关性起决定性作用的两个主要因素:目标场景亮温分布和接收机等效噪声温度,并利用仿真方法进行验证.通过灵敏度仿真实验,证明经过阵列冗余优化可以实现对灵敏度的优化,并且优化程度受到冗余基线可见度噪声之间相关性的影响.

     

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出版历程
  • 收稿日期:  2020-05-15
  • 修回日期:  2021-01-19
  • 刊出日期:  2021-09-15

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