Abstract: Radar signal detection and parameter estimation is central in passive surveillance systems, providing inputs for many information processing modules in order to detect, localize, indentify and intercept hostile targets. The proposed method for detecting radar signals and estimating their intra-pulse parameters in time-varying noisy environments consists of several stages: magnitude-squared envelopes calculation, adaptive noise floor estimation, detection statistics calculation, rising edge detection, time of arrival estimation, falling edge detection, time of departure estimation, pulse width estimation, amplitude estimation and center frequency and bandwidth estimation. Estimated intra-pulse parameters are wrapped into pulse descriptor words (PDWs) for information processing tasks, where each PDW consists of time of arrival, time of departure, pulse width, pulse amplitude, center frequency, signal bandwidth, noise floor level and additional useful information.

Abstract: A system and method for live video streaming over tactical wireless networks based on distortion estimation using multilayer perceptron neural network (MLP). The system and method can adaptively adjust the parameters of transport and application layers according to wireless network conditions, based on video distortion estimation using MLP neural network. The system includes a video motion and detail estimation block, a redundancy and video bitrate optimizer, a MLP neural network-based video distortion estimator, and video transport blocks, a packet error rate (PER) and bandwidth measurement block.

Abstract: A system and method for live video streaming over tactical wireless networks based on distortion estimation using multilayer perceptron neural network (MLP). The system and method can adaptively adjust the parameters of transport and application layers according to wireless network conditions, based on video distortion estimation using MLP neural network. The system includes a video motion and detail estimation block, a redundancy and video bitrate optimizer, a MLP neural network-based video distortion estimator, and video transport blocks, a packet error rate (PER) and bandwidth measurement block.

Abstract: The invention relates to a low profile antenna, operating over a wide range of frequencies. The dual-polarized wideband antenna consists of: radiating elements, ground plane, metallic walls, coaxial cables, split-ring slots. The antenna is fed by coaxial cables at feed points, which are surrounded by split-ring slots. The antenna can be utilized as an element in an array to provide particular radiation pattern.

Abstract: The invention relates to a low profile antenna, operating over a wide range of frequencies. The dual-polarized wideband antenna consists of: radiating elements, ground plane, metallic walls, coaxial cables, split-ring slots. The antenna is fed by coaxial cables at feed points, which are surrounded by split-ring slots. The antenna can be utilized as an element in an array to provide particular radiation pattern.

Abstract: Tools for installing network hardware in server racks may self-adhere to a server rack, alleviating the need for cap screws to attach the tool to the rack. The tool also may support the weight and aid alignment of the network hardware in a rack unit during installation. In some embodiments, the tool may include one or more spring-loaded locks adapted to couple to corresponding holes in the rack. The network device may rest atop the tool so that the network device is properly aligned for installation in the rack unit above the tool. In operation, a technician may couple one or more tools to the rack in the slot below the intended rack unit for the network device to provide hands-free support of the weight of the network device. The technician may then use both hands to screw the network device to the rack.

Abstract: A new method to transmit data of IP applications over half-duplex channel. More precisely, this method makes it possible to run IP applications (such as e-mail, web . . . ) based on low speed, half-duplex channel (VHF, HF . . . ).

Abstract: Tools for installing network hardware in server racks may self-adhere to a server rack, alleviating the need for cap screws to attach the tool to the rack. The tool also may support the weight and aid alignment of the network hardware in a rack unit during installation. In some embodiments, the tool may include one or more spring-loaded locks adapted to couple to corresponding holes in the rack. The network device may rest atop the tool so that the network device is properly aligned for installation in the rack unit above the tool. In operation, a technician may couple one or more tools to the rack in the slot below the intended rack unit for the network device to provide hands-free support of the weight of the network device. The technician may then use both hands to screw the network device to the rack.