Abstract: A method for extracting a sought signal from a noisy signal. The method includes sampling a plurality of samples in a series of cycles of the noisy signal wherein each sample having an n-bit sampled value (n?1), giving rise to a plurality of samples each associated with a respective cycle of the series, wherein each sample is sampled at time T relative to the origin of the respective cycle. The method further includes associating data indicative of the plurality of n-bit samples to N bins according to the corresponding sampled values, wherein N is a function of n, and calculating data indicative of a number of samples for each bin, giving rise to data indicative N-bins histogram or normalized N-bins histogram. The method further includes determining the signal value based on the data indicative of the N-bins histogram or normalized N-bins histogram.

Abstract: A method for extracting a sought signal from a noisy signal. The method includes sampling a plurality of samples in a series of cycles of the noisy signal wherein each sample having an n-bit sampled value (n?1), giving rise to a plurality of samples each associated with a respective cycle of the series, wherein each sample is sampled at time T relative to the origin of the respective cycle. The method further includes associating data indicative of the plurality of n-bit samples to N bins according to the corresponding sampled values, wherein N is a function of n, and calculating data indicative of a number of samples for each bin, giving rise to data indicative N-bins histogram or normalized N-bins histogram. The method further includes determining the signal value based on the data indicative of the N-bins histogram or normalized N-bins histogram.

Abstract: There are provided a security inspection system comprising ultra-wideband transmitters (104) and receivers (103) and a method of security inspection. The method comprises scanning a walk-through inspection space (200) along with an inspected person passing there through to yield collected data informative of scattered signals in association with respective channels, wherein the ultra-wideband transmitters and receivers are arranged at both sides of the inspection space. The method further comprises dividing the inspection space into a plurality of subspaces such that each voxel in the inspection space belongs to one and only one subspace, providing image reconstruction separately for each subspace of the plurality of the subspaces, wherein image reconstruction for voxels residing in a given subspace is provided using collected data corresponding to a set of channels selected for the given subspace in accordance with predefined rules; and using image reconstruction results to detect a concealed object.

Abstract: There are provided a security inspection system comprising ultra-wideband transmitters (104) and receivers (103) and a method of security inspection. The method comprises scanning a walk-through inspection space (200) along with an inspected person passing there through to yield collected data informative of scattered signals in association with respective channels, wherein the ultra-wideband transmitters and receivers are arranged at both sides of the inspection space. The method further comprises dividing the inspection space into a plurality of subspaces such that each voxel in the inspection space belongs to one and only one subspace, providing image reconstruction separately for each subspace of the plurality of the subspaces, wherein image reconstruction for voxels residing in a given subspace is provided using collected data corresponding to a set of channels selected for the given subspace in accordance with predefined rules; and using image reconstruction results to detect a concealed object.

Abstract: There are provided a security inspection system comprising ultra-wideband transmitters (104) and receivers (103) and a method of security inspection. The method comprises scanning a walk-through inspection space (200) along with an inspected person passing there through to yield collected data informative of scattered signals in association with respective channels, wherein the ultra-wideband transmitters and receivers are arranged at both sides of the inspection space. The method further comprises dividing the inspection space into a plurality of subspaces such that each voxel in the inspection space belongs to one and only one subspace, providing image reconstruction separately for each subspace of the plurality of the subspaces, wherein image reconstruction for voxels residing in a given subspace is provided using collected data corresponding to a set of channels selected for the given subspace in accordance with predefined rules; and using image reconstruction results to detect a concealed object.

Abstract: There are provided a security inspection system comprising ultra-wideband transmitters (104) and receivers (103) and a method of security inspection. The method comprises scanning a walk-through inspection space (200) along with an inspected person passing there through to yield collected data informative of scattered signals in association with respective channels, wherein the ultra-wideband transmitters and receivers are arranged at both sides of the inspection space. The method further comprises dividing the inspection space into a plurality of subspaces such that each voxel in the inspection space belongs to one and only one subspace, providing image reconstruction separately for each subspace of the plurality of the subspaces, wherein image reconstruction for voxels residing in a given subspace is provided using collected data corresponding to a set of channels selected for the given subspace in accordance with predefined rules; and using image reconstruction results to detect a concealed object.

Abstract: There are provided an ultra-wideband radar imaging system comprising an antenna with at least one receiver and a plurality of transmitters operating in multi-static mode, method of operating thereof and volume visualization unit to be used in conjunction with the multi-static ultra-wideband radar imaging system. The method comprises: receiving by said at least one receiver a plurality of signals, each respectively representing return data in a channel associated with the receiver and one of the transmitters among said plurality of transmitters, thus giving rise to a plurality of spatial data channels; among said plurality of spatial data channels selecting data channels for further processing; and providing volume visualization by processing data corresponding merely to the selected spatial data channels.

Abstract: There are provided an ultra-wideband radar imaging system comprising an antenna with at least one receiver and a plurality of transmitters operating in multi-static mode, method of operating thereof and volume visualization unit to be used in conjunction with the multi-static ultra-wideband radar imaging system. The method comprises: receiving by said at least one receiver a plurality of signals, each respectively representing return data in a channel associated with the receiver and one of the transmitters among said plurality of transmitters, thus giving rise to a plurality of spatial data channels; among said plurality of spatial data channels selecting data channels for further processing; and providing volume visualization by processing data corresponding merely to the selected spatial data channels.

Abstract: There are provided a through-the-obstacle radar system and method of operating thereof comprising recording signals and/or derivatives thereof collected during a certain substantial monitoring period, and using the recorded information for generating patterns informative of a monitoring scene. There are further provided a method of motion detection based on through-the-obstacle radar and the system thereof.

Abstract: Herewith disclosed a method for volume visualization in ultra-wideband radar and a system thereof. The method comprises perceiving processing provided in order to facilitate a meaningful representation and/or an instant understanding of the image to be displayed, said perceiving processing resulted in generating one or more perceiving image ingredients. The perceiving image ingredient may be, for example, a shadow added to the reconstructed image, a position-dependent color scheme applied to the reconstructed image, a color scheme adapted to external lighting conditions and applied to the reconstructed image, a Halo artificially added to the reconstructed image, a distinctive color scheme applied to time-invariant and time-variant elements of the reconstructed image, etc.

Abstract: A through-wall imaging device having antenna elements for transmitting and receiving signals adapted to pass through a wall for imaging objects therebehind, having a base with a carrier portion and a plurality of spaced-apart extensions connected thereto. At least a portion of the antenna elements are mounted on the extensions. The area between adjacent extensions is free of any material of the base at least when the extensions are in an operative state.

Abstract: A method for determining changes in internal delays of RF units, the RF units including a plurality of receivers and transmitters. The method includes providing initial direct signals' time of arrivals of the RF units initial internal delays of the RF units. Following this, each transmitter transmitting a direct signal, and the real-time direct signal's time of arrivals of the RF units, are measured. Then, changes in internal delays of the RF units are calculated based on the real-time direct signals' time of arrivals and initial direct signals' time of arrivals. And finally, real-time internal delays of the RF units are calculated based on the changes in internal delays and the initial internal delays of the RF units.

Abstract: An acquisition channel (20) includes a UWB sampler block (21) coupled to an analog integration block (22) further coupled to a digital integration block (24) via an analog/digital converter (23). For each range cell the UWB sampler block (21) repeatedly samples the received signal by tuning the sampling instants to the range cells to be acquired. The acquisition channel (20) is further coupled to a processor (26) and a database (25).

Abstract: A through-wall imaging device having antenna elements for transmitting and receiving signals adapted to pass through a wall for imaging objects therebehind, having a base with a carrier portion and a plurality of spaced-apart extensions connected thereto. At least a portion of the antenna elements are mounted on the extensions. The area between adjacent extensions is free of any material of the base at least when the extensions are in an operative state.

Abstract: Herewith disclosed a method for volume visualization in ultra-wideband radar and a system thereof. The method comprises perceiving processing provided in order to facilitate a meaningful representation and/or an instant understanding of the image to be displayed, said perceiving processing resulted in generating one or more perceiving image ingredients. The perceiving image ingredient may be, for example, a shadow added to the reconstructed image, a position-dependent color scheme applied to the reconstructed image, a color scheme adapted to external lighting conditions and applied to the reconstructed image, a Halo artificially added to the reconstructed image, a distinctive color scheme applied to time-invariant and time-variant elements of the reconstructed image, etc.

Abstract: An acquisition channel (20) includes a UWB sampler block (21) coupled to an analog integration block (22) further coupled to a digital integration block (24) via an analog/digital converter (23). For each range cell the UWB sampler block (21) repeatedly samples the received signal by tuning the sampling instants to the range cells to be acquired. The acquisition channel (20) is further coupled to a processor (26) and a database (25).

Abstract: There are provided a through-the-obstacle radar system and method of operating thereof comprising recording signals and/or derivatives thereof collected during a certain substantial monitoring period, and using the recorded information for generating patterns informative of a monitoring scene. There are further provided a method of motion detection based on through-the-obstacle radar and the system thereof.

Abstract: Herewith disclosed a computerized method of volume visualization, a volume visualization unit and through-the-obstacle imaging system capable of volume visualization. The method of volume visualization comprises obtaining one or more volumetric data sets corresponding to physical inputs informative, at least, of a part of an imaging scene concealed by one or more obstacles and obtained by a sensor array; obtaining data informative of position and/or orientation of the sensor array corresponding to said obtained physical inputs; pre-processing one or more obtained volumetric data sets and/or derivatives thereof in accordance with said position and/or orientation informative data; volume visualization processing one or more obtained volumetric data sets and/or derivatives thereof in accordance with results of pre-processing.

Abstract: A method for determining changes in internal delays of RF units, the RF units including a plurality of receivers and transmitters. The method includes providing initial direct signals' time of arrivals of the RF units initial internal delays of the RF units. Following this, each transmitter transmitting a direct signal, and the real-time direct signal's time of arrivals of the RF units, are measured. Then, changes in internal delays of the RF units are calculated based on the real-time direct signals' time of arrivals and initial direct signals' time of arrivals. And finally, real-time internal delays of the RF units are calculated based on the changes in internal delays and the initial internal delays of the RF units.