Abstract: An improved non-OFDM communication system and method replaces an FFT at the receiver with an alternative processing configuration. The use of dense subcarriers and assigning A, B pairs based upon a pre-assigned QAM bit-mapped constellation will be maintained as with traditional OFDM. However, the receiver sample-rate is independent of subcarrier frequency-separation, and the system does not maintain separate real and imaginary signals at the transmitter and receiver. The system also processes receiver samples incrementally without awaiting the end of the modulation cycle, and uses incrementally-processed data to characterize disruptions introduced by the channel so as to better adapt to these disruptions. The system has the potential to increase signal throughput by a factor of two by re-using one of the freed-up information paths previously used by the real and imaginary signals.

Abstract: An improved non-OFDM communication system and method replaces an FFT at the receiver with an alternative processing configuration. The use of dense subcarriers and assigning A, B pairs based upon a pre-assigned QAM bit-mapped constellation will be maintained as with traditional OFDM. However, the receiver sample-rate is independent of subcarrier frequency-separation, and the system does not maintain separate real and imaginary signals at the transmitter and receiver. The system also processes receiver samples incrementally without awaiting the end of the modulation cycle, and uses incrementally-processed data to characterize disruptions introduced by the channel so as to better adapt to these disruptions. The system has the potential to increase signal throughput by a factor of two by re-using one of the freed-up information paths previously used by the real and imaginary signals.

Abstract: A system and method for airborne oblique image collection provides a dense diversity of view aspects of a subtended scene. An onboard camera of an aircraft collects a highly overlapped set of oblique images that are well suited for preparing three dimensional meshes that model complex scenes with significant vertical relief. The aircraft is flown in a radial trajectory over a targeted observable area in order to collect the images. The radial trajectory is optimized using parameters including an altitude, a field-of-view angle, an aft edge angle, and a forward edge angle of the onboard camera, as well as an expected velocity of the aircraft. A flight management system is also employed, wherein the flight management system computes a predicted location for the aircraft using location data and a current velocity of the aircraft. The predicted location being compared to an expected location, ensuring proper navigation of the radial trajectory.

Abstract: A system and method for airborne oblique image collection provides a dense diversity of view aspects of a subtended scene. An onboard camera of an aircraft collects a highly overlapped set of oblique images that are well suited for preparing three dimensional meshes that model complex scenes with significant vertical relief. The aircraft is flown in a radial trajectory over a targeted observable area in order to collect the images. The radial trajectory is optimized using parameters including an altitude, a field-of-view angle, an aft edge angle, and a forward edge angle of the onboard camera, as well as an expected velocity of the aircraft. A flight management system is also employed, wherein the flight management system computes a predicted location for the aircraft using location data and a current velocity of the aircraft. The predicted location being compared to an expected location, ensuring proper navigation of the radial trajectory.

Abstract: A juvenile vehicle seat includes a seat bottom, a seat back, a pivotable shield, and ajuvenile-restraint harness. The shield includes a barrier coupled to the juvenile-restraint harness.

Abstract: A system determines three-dimensional attitude of a moving platform using signals from two closely spaced Global Positioning System (GPS) antennas. The system includes three rate gyroscopes and three accelerometers rigidly mounted in a fixed relationship to the platform to aid in determining the attitude. The system applies signals from one of the two GPS antennas to sufficient channels of a GPS receiver to support navigation. The system applies signals from a second of the two GPS antennas to the additional receive channels to support interferometry. The system resolves the ambiguity normally associated with the interferometric heading solution by having closely spaced GPS antennas, and uses interferometry to refine a coarse heading estimate from a GPS plus Inertial Measurement Unit (IMU) transfer alignment solution. The system achieves sub-meter spacing of the two GPS antennas by merging many temporal interferometric measurements and the attitude memory provided by the IMU time-history solution.

Abstract: A juvenile seat includes a base and a lower back section coupled to the base. The base includes a bottom seat portion and the lower back section is positioned to lie at an angle relative to the bottom seat portion. The lower back section includes a planar front surface. A headrest of the juvenile seat is coupled to the lower back section for up and down movement relative to the base and the lower back section. The headrest includes a planar front surface and is positioned forward the planar front surface of the lower back section. The headrest and lower back section cooperate to provide a back rest surface for the juvenile seated therein.

Abstract: A juvenile seat includes a base and a lower back section coupled to the base. The base includes a bottom seat portion and the lower back section is positioned to lie at an angle relative to the bottom seat portion. The lower back section includes a planar front surface. A headrest of the juvenile seat is coupled to the lower back section for up and down movement relative to the base and the lower back section. The headrest includes a planar front surface and is positioned forward the planar front surface of the lower back section. The headrest and lower back section cooperate to provide a back rest surface for the juvenile seated therein.

Abstract: A system determines three-dimensional attitude of a moving platform using signals from two closely spaced Global Positioning System (GPS) antennas. The system includes three rate gyroscopes and three accelerometers rigidly mounted in a fixed relationship to the platform to aid in determining the attitude. The system applies signals from one of the two GPS antennas to sufficient channels of a GPS receiver to support navigation. The system applies signals from a second of the two GPS antennas to the additional receive channels to support interferometry. The system resolves the ambiguity normally associated with the interferometric heading solution by having closely spaced GPS antennas, and uses interferometry to refine a coarse heading estimate from a GPS plus Inertial Measurement Unit (IMU) transfer alignment solution. The system achieves sub-meter spacing of the two GPS antennas by merging many temporal interferometric measurements and the attitude memory provided by the IMU time-history solution.

Abstract: A system determines three-dimensional attitude of a moving platform using signals from two closely spaced Global Positioning System (GPS) antennas. The system includes three rate gyroscopes and three accelerometers rigidly mounted in a fixed relationship to the platform to aid in determining the attitude. The system applies signals from a first of the two GPS antennas to sufficient channels of a GPS receiver to support navigation. The system applies signals from a second of the two GPS antennas to the remaining receive channels, which are configured to support interferometry. The system optimally selects the navigation and interferometry channels to provide an interferometric heading solution. The system resolves the ambiguity normally associated with the interferometric heading solution by having the closely spaced GPS antennas and using interferometry to refine a coarse heading estimate from a GPS plus Inertial Measurement Unit (IMU) transfer alignment solution.

Abstract: A system determines three-dimensional attitude of a moving platform using signals from two closely spaced Global Positioning System (GPS) antennas. The system includes three rate gyroscopes and three accelerometers rigidly mounted in a fixed relationship to the platform to aid in determining the attitude. The system applies signals from a first of the two GPS antennas to sufficient channels of a GPS receiver to support navigation. The system applies signals from a second of the two GPS antennas to the remaining receive channels, which are configured to support interferometry. The system optimally selects the navigation and interferometry channels to provide an interferometric heading solution. The system resolves the ambiguity normally associated with the interferometric heading solution by having the closely spaced GPS antennas and using interferometry to refine a coarse heading estimate from a GPS plus Inertial Measurement Unit (IMU) transfer alignment solution.