Abstract: The present invention relates to a satellite communication system for extending communications between a vehicle and a satellite in an area of non-visibility of the satellite. The satellite communication system comprises a fixed transceiver system and a mobile transceiver system. The fixed transceiver system includes a first antenna intended to be positioned outside the area of non-visibility of the satellite, and at least one second antenna coupled with the first antenna and intended to be positioned in the area of non-visibility of the satellite. The fixed transceiver system is configured to receive through the first antenna downlink signals transmitted by the satellite on at least one downlink carrier frequency and to transmit the received downlink signals on the at least one downlink carrier frequency in the area of non-visibility of the satellite through the at least one second antenna.

Abstract: The present invention concerns a satellite image retrieving system that comprises electronic input means, electronic retrieving means, and electronic storing means. The electronic input means are coupled with the electronic retrieving means and are configured to generate input data and to provide the electronic retrieving means with said input data. The input data is indicative of a given geographic area. The electronic retrieving means are coupled with the electronic storing means that are configured to store satellite images, each satellite image stored on the electronic storing means representing a corresponding area of the earth's surface and being associated with corresponding telemetry data generated and associated with the satellite image by a satellite that has remotely sensed the satellite image.

Abstract: Disclosed herein is a tracking system configured to track a product and/or an activity. The tracking system comprises a tracing device and a verification server. The tracing device is coupled with the verification server by means of communication means configured to allow exchange of data between the tracing device and the verification server. The tracing device is coupled with a first satellite localization receiver which is configured to receive signals from a satellite localization system, process the received signals to obtain satellite localization observables, and compute locations based on the satellite localization observables. The tracing device is configured to acquire from the first satellite localization receiver positioning data. The positioning data comprise a location computed by the first satellite localization receiver, and a location time which represents time and data at which the location is computed by the first satellite localization receiver.

Abstract: An indoor localization system for locating an electronic mobile device within an indoor environment is provided. The indoor localization system includes a plurality of transmitting nodes arranged in different positions within the indoor environment and configured to transmit RF signals. An electronic mobile device is configured to receive the RF signals from the transmitting nodes. The indoor localization system is configured to operate in a training mode, wherein reference quantities are computed based on powers of the RF signals received from the transmitting nodes in different reference positions within the indoor environment.

Abstract: Disclosed herein is a method for identifying persistent scatterers in digital “Synthetic Aperture Radar” images of an area of Earth's surface each taken at a respective time. The method involves processing the digital Synthetic Aperture Radar images to produce digital generalized differential interferograms. The method further involves analyzing properties of pairs of pixels in the digital generalized differential interferograms to identify individual pixels imaging persistent scatterers.

Abstract: In a synthetic aperture radar system (1) monitoring an area containing at least one moving target (2) for identification, the target (2) is equipped with an identification device (3), which receives the radar signal (RS) transmitted by the radar system (1), and transmits a processed radar signal (ES) obtained by modulating the incoming radar signal (RS) with a modulating signal (MODS) containing target (2) information (ID, MSG), such as identification (ID) and status (MSG) information, and by amplifying the modulated radar signal (RS); the radar echo signal (RES) reflected by the monitored area and containing the processed radar signal (ES) is received and processed by a control station (8) of the radar system (1) to locate the target (2) on a map of the monitored area, and to extract the target (2) information (ID, MSG) to identify the target (2).

Abstract: A method for automatically detecting fires on Earth's surface using a satellite system is provided. The method includes acquiring multi-spectral images of the Earth at different times, using a multi-spectral satellite sensor, each multi-spectral image being a collection of single-spectral images each associated with a respective wavelength (?), and each single-spectral image being made up of pixels each indicative of a spectral radiance (R?) from a respective area of the Earth. The method also includes providing a model relating the spectral radiances (R?) of each pixel in multi-spectral images acquired at different times and physical quantities representing thermodynamic phenomena occurring on the Earth's surface, in the Earth's atmosphere, and related to the Earth and the Sun relative positions. The method further includes computing for each pixel, at a given time, at least the physical quantity in the model representing a possible fire on the Earth's surface.

Abstract: A station for the transmission and reception of electromagnetic waves (e.g. from a communication satellite in stationary earth orbit), operating in a multichannel band with two conjugate polarizations, includes a regenerative distortion compensator in a receiving waveguide branch and a predistorter in a transmitting waveguide branch, both controlled by a processor responsive to output signals from a subsequent i-f stage in which a distortion monitor measures cross-talk between the two polarizations on the basis of two central beacons extracted from the incoming message band.