Post by Admin on Apr 22, 2014 13:05:22 GMT
www.nij.gov/journals/258/pages/through-the-wall-surveillance.aspx
Through-the-Wall Sensors for Law Enforcement
[PDF] www.justnet.org/pdf/00-WallSensorReport-508.pdf
To detect the presence of an object, a TTWS device sends out an electromagnetic signal (i.e., radio waves). The signal propagates from the device and is then reflected by an object. Part of the reflected signal then travels to a receiver that detects the reflected signal. The receiver is typically (although not necessarily) in the same device as the transmission source. The reflected signal then indicates the presence of an object; the strength of the reflected signal may indicate the proximity and/or how reflective the object is (i.e., size, material com position). With advanced signal formation (e.g., pulses) and signal processing methodologies, other qualities of the target can be deduced, qualities such as the range to the target and whether the target is stationary or moving.
Xaver 400 Compact, Tactical Through-Wall Imaging System
Xaver™ 400 Features
Compact, light and easy to operate, the Xaver™ 400 allows maximum mobility and maneuverability in virtually any type of urban operation. The system is ready to go at the push of a button, requiring no warm-up time.
Optimized rugged design for tactical operations
Reliable detection of people behind most common wall materials
Simple user interface with tracking capabilities for intuitive interpretation
Simultaneous detection of static and moving objects
20m (65ft) detection range
Ability to operate in a stand-off mode (at a distance from the wall)
Provides information about room dimensions and major infrastructure elements
Optional Internal wireless video transmitter for remote display
Xaver™ 400 Technology
The Xaver™ 400 utilizes a state-of-the-art system architecture, encompassing multiple cutting edge technologies. A unique, multichannel, and micro-power Ultra-Wideband (UWB) sensor that operates at very high bandwidth enables reliable detection and industry leading object resolution. Algebraic image reconstruction algorithms are used to cope with cluttered environments resulting in a high quality and intuitive image. Simple operation and compact packaging are key features of the design.
On the high-end of TWS capabilities—and price—is the Camero Xaver™ 800 product, which produces a 3-D display of a room in real time.[8] Full 3-D imaging can be accomplished up to 26 feet, and it has an extended imaging range of up to 65 feet. Operators can see not only the shape of the room, but also figures moving around or in one place within the room. A person’s height and distance from walls or objects can be estimated quite easily. The system is generally considered too expensive for law enforcement. Its manufacturer is currently developing a Xaver™ T system, which should be lower in cost.
Anthony Naia, from the Communications-Electronics Research, Development and Engineering Center, demonstrates how to use Sense-Through-the-Wall technology to Secretary of the Army John M. McHugh (right) and Research, Development and Engineering Command Commander Maj. Gen. Nickolas G. Justice.
January 13, 2010. Army: Sense-Through-the-Wall technology
The radar imaging device emits an electromagnetic wave that penetrates physical barriers. The wave records Doppler movements and sends information to the receiver antenna. The imager then displays the range and general direction of all targets for the Soldier.
Wi-Vi lets smartphones see through walls
Through-the-Wall Sensors for Law Enforcement
[PDF] www.justnet.org/pdf/00-WallSensorReport-508.pdf
To detect the presence of an object, a TTWS device sends out an electromagnetic signal (i.e., radio waves). The signal propagates from the device and is then reflected by an object. Part of the reflected signal then travels to a receiver that detects the reflected signal. The receiver is typically (although not necessarily) in the same device as the transmission source. The reflected signal then indicates the presence of an object; the strength of the reflected signal may indicate the proximity and/or how reflective the object is (i.e., size, material com position). With advanced signal formation (e.g., pulses) and signal processing methodologies, other qualities of the target can be deduced, qualities such as the range to the target and whether the target is stationary or moving.
Xaver 400 Compact, Tactical Through-Wall Imaging System
Xaver™ 400 Features
Compact, light and easy to operate, the Xaver™ 400 allows maximum mobility and maneuverability in virtually any type of urban operation. The system is ready to go at the push of a button, requiring no warm-up time.
Optimized rugged design for tactical operations
Reliable detection of people behind most common wall materials
Simple user interface with tracking capabilities for intuitive interpretation
Simultaneous detection of static and moving objects
20m (65ft) detection range
Ability to operate in a stand-off mode (at a distance from the wall)
Provides information about room dimensions and major infrastructure elements
Optional Internal wireless video transmitter for remote display
Xaver™ 400 Technology
The Xaver™ 400 utilizes a state-of-the-art system architecture, encompassing multiple cutting edge technologies. A unique, multichannel, and micro-power Ultra-Wideband (UWB) sensor that operates at very high bandwidth enables reliable detection and industry leading object resolution. Algebraic image reconstruction algorithms are used to cope with cluttered environments resulting in a high quality and intuitive image. Simple operation and compact packaging are key features of the design.
On the high-end of TWS capabilities—and price—is the Camero Xaver™ 800 product, which produces a 3-D display of a room in real time.[8] Full 3-D imaging can be accomplished up to 26 feet, and it has an extended imaging range of up to 65 feet. Operators can see not only the shape of the room, but also figures moving around or in one place within the room. A person’s height and distance from walls or objects can be estimated quite easily. The system is generally considered too expensive for law enforcement. Its manufacturer is currently developing a Xaver™ T system, which should be lower in cost.
Anthony Naia, from the Communications-Electronics Research, Development and Engineering Center, demonstrates how to use Sense-Through-the-Wall technology to Secretary of the Army John M. McHugh (right) and Research, Development and Engineering Command Commander Maj. Gen. Nickolas G. Justice.
January 13, 2010. Army: Sense-Through-the-Wall technology
The radar imaging device emits an electromagnetic wave that penetrates physical barriers. The wave records Doppler movements and sends information to the receiver antenna. The imager then displays the range and general direction of all targets for the Soldier.
Wi-Vi lets smartphones see through walls