Showing papers by "Thales (Netherlands) published in 2003"
TL;DR: It is shown that when estimating the a posteriori probability density of a possible signal in noise by means of a particle filter, the output of the filter can be used to approximately construct the likelihood ratio, which arises in many different detection schemes.
Abstract: In this paper, we present a new result that can be used for detection purposes. We show that when estimating the a posteriori probability density of a possible signal in noise by means of a particle filter, the output of the filter, i.e., the unnormalized weights, can be used to approximately construct the likelihood ratio, which arises in many different detection schemes.
51 citations
14 Oct 2003
TL;DR: In this paper, the authors used an Open Area Test Site, a Semi-Anechoic Chamber, a Full AnechoIC Chamber and a Reverberating Intrinsic Reverbergation Chamber for emission measurements between 20 MHz and 1 GHz.
Abstract: Correction factors between test sites are conventionally based on the antenna pattern of a tuned 1/2 /spl lambda/ dipole. Actual devices show diverse antenna patterns and correlation between results obtained at different test sites fails. This is shown in this paper using an Open Area Test Site, a Semi-Anechoic Chamber, a Full Anechoic Chamber and a Reverberating Intrinsic Reverberation Chamber for emission measurements between 20 MHz and 1 GHz. Differences between the sites of more than 40 dB can be observed.
7 citations
14 Oct 2003
TL;DR: In this paper, a test setup for measuring the noise voltage in the reference of a system is presented, and the conditions for using the set-up are described and validation results are shown.
Abstract: A radiated emission is caused by unwanted antenna currents, often denoted as common mode currents. These currents are created by a noise voltage in the reference of a system. Test setup for measuring this noise voltage has been presented in this paper. The conditions for using the set-up are described and validation results are shown. The noise voltage measured in various printed circuit boards with ground planes with various widths, slits or grids is presented. The net partial inductance of these ground planes has been deduced from the measured noise voltage.
3 citations