Sparse Emission Source Microscopy for Rapid Emission Source Imaging

Ling Zhang, Victor V. Khilkevich, Xiangyang Jiao, Xiao Li, Sukhjinder Toor, Alpesh U. Bhobe, Kyoungchoul Koo, David Pommerenke, James L. Drewniak

Research output: Contribution to journalArticlepeer-review


Emission source microscopy (ESM) technique can be utilized for the localization of electromagnetic interference sources in complex and large systems. This paper presents a sparse and nonuniform sampling technique for ESM. Compared with the traditional way of acquiring abundant and uniformly distributed scanning points on the scanning plane using a robotic scanning system, the proposed method is much more time-efficient in identifying the major radiation sources, even though the image quality is sacrificed. The feasibility of sparse sampling is mathematically proved, and it is shown that increasing number of scanning points increases the signal-to-noise ratio of reconstructed images. Besides, a nearest neighbor interpolation method is applied in the real-time processing to estimate the radiated power through the scanning plane. Thus, back-propagated images and estimated radiated power can be obtained in the real-time measurement process, which can efficiently and instantaneously provide the locations and the radiation strength of the most significant emission sources.

Original languageEnglish
Article number7812664
Pages (from-to)729-738
Number of pages10
JournalIEEE Transactions on Electromagnetic Compatibility
Issue number2
Publication statusPublished - 1 Apr 2017
Externally publishedYes


  • Emission source microscopy (ESM)
  • radiated power
  • signal-tonoise ratio (SNR)
  • source localization
  • sparse sampling

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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