Abstract: Data receiving and logging are disclosed. A method includes receiving a linearly polarized signal, the linearly polarized signal including a set of direct and reflected components and obtaining power measurements of the linearly polarized signal. The power measurements are inserted into a navigation message and provided as precision power values characterizing the linearly polarized signal at a high precision. The power values for the linearly polarized signal are stored for further analysis.

Abstract: Data receiving and logging are disclosed. A method includes receiving a linearly polarized signal, the linearly polarized signal including a set of direct and reflected components and obtaining power measurements of the linearly polarized signal. The power measurements are inserted into a navigation message and provided as precision power values characterizing the linearly polarized signal at a high precision. The power values for the linearly polarized signal are stored for further analysis.

Abstract: A fast, novel method is disclosed which permits to determine the electrical features of an antenna. The antenna is excited with an ultra-short voltage pulse and the far field radiation pattern of the antenna is measured. The resulting time-varying field distribution across the antenna aperture is then reconstructed using time domain holography. A direct analysis of the holographic plot permits the determination a wide range of electrical properties of the antenna.

Abstract: A fast, novel method is disclosed which permits to determine the electrical features of an antenna. The antenna is excited with an ultra-short voltage pulse and the far field radiation pattern of the antenna is measured. The resulting time-varying field distribution across the antenna aperture is then reconstructed using time domain holography. A direct analysis of the holographic plot permits the determination a wide range of electrical properties of the antenna.

Abstract: A radiometry system including an aperture synthesis antenna array type, including plural antenna elements, distributed in an antenna plane relative to at least one axis, according to a determined law. Each antenna element includes first and second coupling probes sensitive to hyper-frequency electromagnetic signals with dual linear polarization in quadrature (arbitrarily referred to as horizontal and vertical polarizations). The probes are connected two by two with electric receiving circuits to create a synthetic aperture. The horizontal (fH1-fH4) and vertical (fV1-fV4) coupling probes of successive antenna elements (eA1-eA4) are oriented in the antenna plane (At′), along each of the axes (&Dgr;), such that at least one of the horizontal or vertical probes (fH1-fH4, fV1-f4) presents a 180° phase shift from one antenna element to the other (eA1-eA4), with the phase shift obtained by a sequential 90° rotation of those probes (fH1-fH4, fV1-fV4).