Marc Hélier

  • Citations Per Year
Learn More
The spatial statistics formalism is applied to electromagnetic fields analysis. Fields are considered as realizations of a random function. Their spatial structure is studied by a method known as variographic analysis. To infer unknown values of the fields, an interpolation method called kriging is then used. It is shown how kriging can be performed on(More)
A new statistical method for radiowave propagation analysis is presented based on the spatial statistics tools known as kriging and variographic analysis. In the proposed method, fields are considered as random variables of position. Using a few samples of those variables obtained by numerical or experimental means, unknown field values with confidence(More)
We present in this paper experimental and simulation results on the propagation of IEMI disturbances along a commercial power network mockup. Two different numerical tools were used in this study: CST Cable Studio and the CRIPTE code. The presented results show that an accurate modeling of the propagation along real cabling scenarios requires a very high(More)
Electromagnetic interference (EMI) is part of electromagnetic compatibility (EMC) handling all issues of non-intentional interference between transmitters and receivers. In this document, various models and methods are described in order to carry out EMI simulations and evaluate the performance degradation of cosite equipments of a system. A next step will(More)
This paper deals with the problem of HF surface wave radar. The goal is to integrate in a unique tool the antenna radiation and the propagation calculations in order to make the analysis consistent. Only the antenna problem is presented here. However the way the propagation problem will be further considered is presented. Cross check of the tool validity(More)
High Frequency radars usually use reflected waves from ionosphere to perform continuous surveillance of very large and far off areas. In the case of long term integration, the ionosphere instability affects the radar image and thus induces poor detection and high probability of false alarm. This problem appears in surveillance issues dealing with slow(More)
  • 1