Patent application number | Description | Published |
20080225643 | WATER SUBMERSIBLE ELECTRONICS ASSEMBLY AND METHODS OF USE - A submersible electronics device for use in a body of water and a substratum floor below the body of water includes a submersible housing, an operational electronics system, and a mobility system. The operational electronics system is mounted in and/or on the housing. The operational electronics system is adapted to communicate with another device and/or to sense at least one of a physical signal and an environmental parameter. The mobility system is selectively operable to fluidize the substratum, vibrate the housing, and/or adjust a buoyancy of the submersible electronics device to selectively move the housing into the substratum to at least partially bury the housing in the substratum and/or to selectively move the housing out of the substratum to at least partially unbury the housing from the substratum. | 09-18-2008 |
20080239874 | UNDERWATER GUIDANCE SYSTEMS, UNMANNED UNDERWATER VEHICLES AND METHODS - An unmanned underwater vehicle for use in water and with at least one acoustic signal source includes a vehicle body, a steering mechanism to direct the vehicle body through the water, a propulsion device to force the vehicle body through the water, and an adaptive Doppler guidance and control (ADGC) system. The ADGC system is configured to receive acoustic signals from the at least one acoustic signal source and to control the steering mechanism using changes in at least one frequency component of the received acoustic signals caused by Doppler shifts. | 10-02-2008 |
20090241826 | SUBMERSIBLE VEHICLES AND METHODS FOR TRANSITING THE SAME IN A BODY OF LIQUID - A submersible vehicle for use in a body of liquid includes a vehicle body, a pair of fins coupled to the vehicle body on opposed sides thereof, and a dihedral angle control system. The dihedral angle control is system operative to vary a fin dihedral angle of each of the fins. | 10-01-2009 |
20100107959 | DELIVERY SYSTEMS FOR PRESSURE PROTECTING AND DELIVERING A SUBMERGED PAYLOAD AND METHODS FOR USING THE SAME - A payload delivery unit for protecting and delivering a payload submerged in a submersion medium comprises a container including a pressure resistant shell and a resilient seal device. The shell defines a containment chamber and includes first and second shell members having opposed first and second sealing faces, respectively. The seal device engages and is interposed between the first and second sealing faces. The container is configured and constructed such that: when the submersion medium applies an exterior pressure to the first and second shell members such that a shell pressure differential, defined as the exterior pressure less an interior pressure of the containment chamber, exceeds a prescribed pressure, the first and second shell members compressively load and deform the seal device to effect a seal between the first and second shell members that prevents ingress of the submersion medium into the containment chamber; and when the shell pressure differential is less than the prescribed pressure, the seal device elastically rebounds to separate the first and second shell members to permit ingress of the submersion medium into the containment chamber. | 05-06-2010 |
20110088609 | DELIVERY SYSTEMS FOR PRESSURE PROTECTING AND DELIVERING A SUBMERGED PAYLOAD AND METHODS FOR USING THE SAME - A payload delivery system for protecting and delivering a payload submerged in a submersion medium includes a containment system. The containment system includes a container and a dehiscing system. The container includes a pressure-resistant shell defining a sealed containment chamber. The dehiscing system is operative to dehisce the shell to open the containment chamber to the submersion medium responsive to a prescribed event and/or a prescribed environmental condition. | 04-21-2011 |
20120118216 | DELIVERY SYSTEMS FOR PRESSURE PROTECTING AND DELIVERING A SUBMERGED PAYLOAD AND METHODS FOR USING THE SAME - A payload delivery system for protecting and delivering a payload submerged in a submersion medium includes a containment system. The containment system includes a container and a dehiscing system. The container includes a pressure-resistant shell defining a sealed containment chamber. The dehiscing system is operative to dehisce the shell to open the containment chamber to the submersion medium responsive to a prescribed event and/or a prescribed environmental condition. | 05-17-2012 |
20120137949 | UNMANNED SUBMERSIBLE VEHICLES AND METHODS FOR OPERATING THE SAME IN A BODY OF LIQUID - An unmanned submersible vehicle for use in a body of liquid having a top surface and in air overlying the top surface includes a hull, an integral antenna, and an antenna positioning system. The hull has first and second opposed ends. The hull includes a first hull portion adjacent the first end and a second hull portion adjacent the second end. The antenna is disposed within the first hull portion and/or is mounted on the first hull portion. The antenna positioning system is configured to reorient the hull from a transit position to a signal position. When the hull is in the signal position: the first hull portion and the antenna are disposed above the second hull portion a greater vertical distance than when the hull is in the transit position; the first hull portion and the antenna are disposed above the top surface and in the air while at least the second hull portion remains submerged in the body of liquid; and the antenna is operative to emit signals through the air above the top surface and/or to receive signals through the air above the top surface. | 06-07-2012 |
20120180712 | SUBMERSIBLE VEHICLES AND METHODS FOR TRANSITING THE SAME IN A BODY OF LIQUID - A submersible vehicle for use in a body of liquid includes a vehicle body, a pair of fins coupled to the vehicle body on-opposed sides thereof, and a dihedral angle control system. The dihedral angle control is system operative to vary a fin dihedral angle of each of the fins. | 07-19-2012 |
20120252392 | Methods and Devices for Reducing Radio Frequency Interference - Devices and methods for selectively reducing interference in wireless signals through field nulling and signal cancelling by signal agnostic, intrinsically stable, analytic means. | 10-04-2012 |
20120298029 | SYSTEMS AND METHODS OF USE FOR SUBMERGED DEPLOYMENT OF OBJECTS - A submersible object management (SOM) system for releasing and/or recovering a plurality of submersible objects within a body of liquid includes a hold and a deployment system. The hold is configured to store the plurality of submersible objects. The deployment system is selectively operable to controllably release at least one of the plurality of submersible objects from the hold into submersion in the body of liquid and/or selectively operable to controllably direct at least one of the plurality of submersible objects into the hold from submersion in the body of liquid. The deployment system includes a guide that is selectively extendable to direct the at least one submersible object, the guide including a plurality of extendable guide members configured to engage the at least one submersible object. | 11-29-2012 |
20120312221 | Submersible vehicles and methods for propelling and/or powering the same in an underwater environment - A submersible vehicle for use in water includes a vehicle body and a hybrid vehicle propulsion system to propel the vehicle body through the water. The hybrid vehicle propulsion system includes a passive thrust system and an active thrust system. The passive thrust system includes a force redirector and a buoyancy control system. The buoyancy control system is operable to selectively generate vertical thrust by varying a buoyancy of the submersible vehicle and the force redirector is configured to generate a glide thrust responsive to changes in the elevation of the submersible vehicle in the water. The active thrust system includes a thruster mechanism operable to selectively propel and/or steer the vehicle body through the water. | 12-13-2012 |
20130225099 | METHODS, SYSTEMS, AND NON-TRANSITORY COMPUTER READABLE MEDIA FOR WIDEBAND FREQUENCY AND BANDWIDTH TUNABLE FILTERING - Methods, systems, and computer readable media for wideband frequency and bandwidth tunable filtering are disclosed. According to one aspect, the subject matter described herein includes a wideband frequency and bandwidth tunable filter that splits a filter input signal into first and second input signals, modifies the first input signal to produce a first output signal, modifies the second input signal to produce a second output signal having an intermediate frequency response, and combines the first and second output signals while adjusting their relative phases and/or amplitudes to produce a filter output signal with the target frequency response. Adjustment includes splitting the second input signal into third and fourth input signals, which are modified and then combined to produce the second output signal having the intermediate frequency response. | 08-29-2013 |
20140073266 | METHODS, SYSTEMS, AND NON-TRANSITORY COMPUTER READABLE MEDIA FOR WIDEBAND FREQUENCY AND BANDWIDTH TUNABLE FILTERING - Methods, systems, and computer readable media for wideband frequency and bandwidth tunable filtering are disclosed. According to one aspect, the subject matter described herein includes a wideband frequency and bandwidth tunable filter that splits a filter input signal into first and second input signals, modifies the first input signal to produce a first output signal, modifies the second input signal to produce a second output signal having an intermediate frequency response, and combines the first and second output signals while adjusting their relative phases and/or amplitudes to produce a filter output signal with the target frequency response. Adjustment includes splitting the second input signal into third and fourth input signals, which are modified and then combined to produce the second output signal having the intermediate frequency response. | 03-13-2014 |
20140152499 | METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR MITIGATION OF IN-BAND INTERFERENCE OF GLOBAL POSITIONING SYSTEM (GPS) SIGNALS - Methods, systems, and computer readable media for mitigation of interference of GPS signals are disclosed providing selective mitigation of in-band interference implementing deterministic phase control. In one embodiment, a system for mitigating interference of GPS signals includes a pair of antennas, each receiving GPS signals that include both a desired signal component and a jammer signal component. The signal from one antenna is phase-shifted as needed to make it anti-phase with the signal from the other antenna, so that when the two signals are combined, the jammer signal components substantially cancel each other, leaving the desired signal components. Determining the phase shift required involves deterministically calculating the phase shift based on the amplitudes of the two input signals and the amplitude of the combined signal instead of the iterative techniques used in conventional systems. | 06-05-2014 |
20140235190 | METHODS AND DEVICES FOR REDUCING RADIO FREQUENCY INTERFERENCE - Devices and methods for selectively reducing interference in wireless signals through field nulling and signal cancelling by signal agnostic, intrinsically stable, analytic means. | 08-21-2014 |
20150106008 | DEVICES AND METHODS FOR PASSIVE NAVIGATION - Devices and methods are disclosed for determining position and controlling navigation by sensing movement through the Earth's magnetic field. Change in position is determined by integrating velocity which has been normalized for spatial and temporal field variation. Position is registered with respect to starting point and/or subsequently detected environmental feature. Signals are provided to actuator for guidance, navigation and control. | 04-16-2015 |
20150244431 | DEVICES AND METHODS FOR DIVERSITY SIGNAL ENHANCEMENT AND COSITE CANCELLATION - Devices and methods for providing enhanced diversity reception and cosite cancellation are disclosed. According to one aspect, the subject matter described herein includes a device for providing enhanced diversity reception and cosite cancellation. The device includes a transmit chain connected to a circulator further connected to first antenna and to a combiner. The combiner is connected to anti-cosite circuitry and to first detector. The anti-cosite circuitry is further connected to a secondary antenna. The first detector is further connected to a receive chain. | 08-27-2015 |