Abstract: A system and method for determining the roll rate and roll angle of a spinning platform by using the measured phase and/or amplitude differences between the GPS satellite signals received on two or more antennas. The measured signal differences and the navigation solution from a GPS receiver are processed in a roll filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines in the presence as well as in the absence of jamming, and where the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.

Abstract: A system and method for determining the roll rate and roll angle of a spinning platform in a jamming environment, by suppressing the interference signals from the received GPS signals and using the measured phase and amplitude differences between the GPS satellite signals received on two or more antennas. The measured signal differences and the navigation solution from a GPS receiver are processed in a roll filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines in the presence of jamming, and where the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.

Abstract: A multimode Radio Access Network (RAN) for wireless communication is disclosed. The RAN separates the control signals from the data streams for their distributed processing. The control signals are transmitted between base stations and a Radio Resource Server (RRS), while the data streams are communicated between the base stations and Wireless Access Gateways (WAGs). The base station and WAG resources are managed by the RRS. Besides providing single and multiple radio mode access to a mobile user for efficient communication with other wireless communication networks, the RAN infrastructure has a high outage tolerance and can be scaled cost effectively for wider coverage and increased data traffic capacity.

Abstract: A system and method for determining the roll rate and roll angle of a spinning platform, using the measured phase differences between the GPS satellite signals received on two or more antennas. The measured phase differences and the navigation solution from a GPS receiver are processed in a Kalman filter to obtain the desired information. Data from non-GPS measurement sources is optionally provided to update the navigation solution. Although of wide applicability, the invention is uniquely suited to the measurement of roll rates and roll angles of fast spinning platforms with small baselines, in which the antennas are separated from each other by distances that are a fraction of the GPS signal wavelength.

Abstract: An antijam filter and method for filtering interference signals from signals received from the desired user in spatially multiplexed wireless communication systems. The antijam filter estimates the interference from known and unknown sources, and uses that estimate to filter the interference from the received signals. The filtered desired user signals are rendered for further signal processing using existing methods. The antijam filter and method are modular, with applicability to a wide range of wireless communication systems employing multiple antennas at the receiver.

Abstract: A disposable flashlight uniquely suited to operation in high humidity and water exposure conditions, such as those encountered in search and rescue missions at sea. The bulb, which is preferably a high intensity super-bright light emitting diode, is energized to produce light using a battery connected to it via a switch and an electrical circuit. The switch completes the electrical circuit via an electrically conducting fluid, allowing the electrical current to flow from the battery and the bulb to illuminate.

Abstract: A compact disc (CD) jewel box is described in which a multifunction light is positioned within the cavity space defined by the CD storage compartment and the CD support tray. The CD jewel box is illuminated with light from one or more light emitting diodes (LEDs) powered by small power supplies or battery cells, using one or more switches that are optionally sensitive to pressure, motion, ambient sound, or light levels. The multifunction light dynamically illuminates the prescribed spaces within the jewel box. A light conducting optical lens is provided to enhance the visual effects by transporting the light as desired. The support tray is constructed from a transparent material, preferably a transparent plastic.

Abstract: A sock sorting and storage device comprising two clamping elements: the first having identifying indicia on its base and a plurality of solid posts extending therefrom, and the second having a corresponding plurality of internally hollow posts extending from a common base and each ending into sharp closed pointed ends. The interiors of the hollow posts comprise locking channels that are open at the base, extending through said base, and sealed at the closed pointed ends. In use, the solid posts are received and permanently and fixedly secured in their corresponding locking channels using fastening means provided on the lateral surfaces of the solid posts and the lateral interior surfaces of the internally hollow posts.

Abstract: A sock sorting device comprising two clamping elements: the first having identifying indicia on its base and a plurality of solid posts extending therefrom, and the second having a corresponding plurality of internally hollow posts extending from a common base and each ending into sharp closed pointed ends. The interiors of the hollow posts comprise locking channels that are open at the base, extending through said base, and sealed at the closed pointed ends. In use, the solid posts can be received and permanently and fixedly secured in their corresponding locking channels using fastening means provided on the lateral surfaces of the solid posts and the lateral interior surfaces of the internally hollow posts.