Proper Equipment Ordinance for Achieving EM Cleanliness in Space Missions: The Case of ELF Electric Sources

A constant electromagnetic compatibility issue in the majority of space missions is the accurate EMI source identification and modeling. This is necessary in order to provide electromagnetic (EM) cleanliness in a specific area inside or outside the spacecraft, where sensitive measurement equipment is placed. Authors in previous work have presented a stochastic process capable to accurately predict the EM signature of a device both for transient and steady-state emissions. In this article, a supplementary methodology is proposed, using the models from the previously established process, to achieve electromagnetic cleanliness. Authors claim that EM cleanliness is possible to be achieved inside or outside a specific area of the spacecraft structure with proper equipment ordinance and if necessary the aid of an additional auxiliary source. The proposed methodology is using a heuristic approach to find the optimum positions of the available equipment. The equipment when placed at these positions presents a minimum total electromagnetic field at a specific point or region. Moreover, if necessary, the total field can be further minimized with the addition of an auxiliary source.

[2]  F. Marliani,et al.  Prediction of DC magnetic fields for magnetic cleanliness on spacecraft , 2011, 2011 IEEE International Symposium on Electromagnetic Compatibility.

[3]  M. B. Alexander,et al.  Electronic systems failures and anomalies attributed to electromagnetic interference , 1995 .

[4]  Measuring Transient and Steady State Electric Field Emissions of Space Equipment for EMC and Cleanliness Purposes , 2018, 2018 IEEE International Conference on High Voltage Engineering and Application (ICHVE).

[5]  Hisayoshi Shimizu,et al.  Magnetic Cleanliness Program Under Control of Electromagnetic Compatibility for the SELENE (Kaguya) Spacecraft , 2010 .

[6]  H. Garrett,et al.  Design guidelines for assessing and controlling spacecraft charging effects , 1985 .

[7]  K. Mehlem,et al.  New developments in magnetostatic cleanliness modeling , 2012, 2012 ESA Workshop on Aerospace EMC.

[8]  M. Sadiku Electromagnetic compatibility , 1992, IEEE Potentials.

[9]  Jeffrey H Williams,et al.  Guide to the Expression of Uncertainty in Measurement(the GUM) , 2016 .

[10]  C. D. Nikolopoulos,et al.  On the Modeling of ELF Electric Fields for Space Mission Equipment , 2017, IEEE Transactions on Electromagnetic Compatibility.

[11]  T.S. Nanjundaswamy,et al.  Design techniques and methodologies for effective electromagnetic cleanliness in spacecraft power system , 2006, 2006 9th International Conference on Electromagnetic Interference and Compatibility (INCEMIC 2006).

[12]  Rainer Storn,et al.  Differential Evolution – A Simple and Efficient Heuristic for global Optimization over Continuous Spaces , 1997, J. Glob. Optim..

[13]  Gordon L. Wrenn,et al.  Spacecraft charging , 1979, Nature.