| The Aerospace Corporation Patent applications |
| Patent application number | Title | Published |
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| 20120135550 | REFRACTION ASSISTED ILLUMINATION FOR IMAGING - Various embodiments are directed to systems and methods of imaging subsurface features of objects. An illumination source may be directed towards a surface of an object comprising subsurface features at a first angle relative to the normal of the surface. The object may have a portion between the subsurface features and the surface that has an index of refraction that is greater than the index of refraction of a surrounding medium. An imaging device may be placed with an objective lens oriented substantially normal to the surface. The first angle may be larger than an acceptance angle of the objective lens. | 05-31-2012 |
| 20120109425 | SYSTEMS, METHODS, AND APPARATUS FOR SENSING FLIGHT DIRECTION OF A SPACECRAFT - Certain embodiments of the invention may include systems, methods, and apparatus for sensing flight direction of a spacecraft. According to an example embodiment of the invention, a method is provided for determining flight direction of a spacecraft. The method includes providing at least one imaging detector associated with a spacecraft; imaging at least a portion of a celestial body onto the at least one imaging detector; acquiring, by the at least one imaging detector, sequential images of at least a portion of the celestial body; and determining the spacecraft flight direction relative to the celestial body based at least in part on processing the sequential images, wherein the processing is performed by one or more computer processors. | 05-03-2012 |
| 20120084314 | SYSTEMS AND METHODS FOR SUPPORTING RESTRICTED SEARCH IN HIGH-DIMENSIONAL SPACES - Embodiments of the invention may provide systems and methods for supporting restricted search capabilities in high-dimensional spaces. These example restricted search capabilities may allow for an unbiased search that is simply restricted to those regions of interest to a decision maker. It will be appreciated that a restricted search does not mean that additional constraints, such as preference or biasing information, are utilized to reduce the search space into some feasible sub-space of the original optimization problem. Instead, the example restricted search may limit the search to a certain sub-space of the full multi-dimensional tradeoff space. | 04-05-2012 |
| 20120019707 | REFRACTION ASSISTED ILLUMINATION FOR IMAGING - Various embodiments are directed to systems and methods for imaging subsurface features of a semiconductor object comprising a first region having a first doping property and a second region having a second doping property. The semiconductor object may comprise subsurface features and material between a surface of the semiconductor object and the subsurface features. The material may have an index of refraction that is greater than an index of refraction of a surrounding medium in contact with the surface of the semiconductor object. For example, a system may comprise an imaging device comprising an objective. The imaging device may be sensitive to a first wavelength. The system may also comprise an illumination source to emit illumination substantially at the first wavelength. The illumination may be directed towards the surface of the semiconductor object at a first angle relative to a normal of the surface. The first angle is greater than an acceptance angle of the objective of the imaging device. Also, the first wavelength may have a photonic energy substantially equal to a bandgap of the first region. | 01-26-2012 |
| 20110316423 | SYSTEMS, METHODS, AND APPARATUS FOR IMPROVING THE VISIBILITY AND IDENTIFICATION OF SATELLITES USING LIGHT EMITTING DIODES - Certain embodiments of the invention may include systems, methods, and apparatus for improving the visibility and identification of satellites using light emitting diodes. According to an example embodiment of the invention, a method is provided for improving the visibility of satellites. The method can include attaching one or more light emitting diodes (LEDs) to a satellite, supplying one or more signals to the one or more LEDs, and producing light emission having a unique identifier from the one or more LEDs based at least in part on the one or more signals. | 12-29-2011 |
| 20110313753 | Multicast emulation - Systems and methods for emulating the reception of a multicast message considering simulated host channel characteristics. Methods, according to various embodiments, may comprise executing a plurality of host applications subscribing to a first multicast group address. The methods may also comprise executing a plurality of sockets. The methods may also comprise receiving a data packet indicating the first multicast group address. The data packet may be modified according to a first channel impairment condition to generate a first impaired data packet, which may be directed to a first host application selected from the plurality of host applications via a first socket selected from the plurality of sockets. The first socket may correspond to the first host. The data packet may be modified according to a second channel impairment condition to generate a second impaired data packet directed to a second host application via a second socket. | 12-22-2011 |
| 20110308296 | High-frequency, hexapod six degree-of-freedom shaker - A shaker for enabling the testing of gyros and/or other devices for performance under realistic 6DOF motions. The shaker may be implemented as a hexapod, comprising a plate and six individually, simultaneously, and real-time controllable strut assemblies that are capable of extending and contracting linearly. The strut assemblies may comprise high-precision, linear electromagnetic actuators. The strut assemblies may also comprise high-precision non-contact sensors to sense the extension/contraction of the strut assemblies along their stroke length. In addition, the strut assemblies may comprise, at each end thereof, stiff, bendable flexures to attain the repeatable and linear motion required. The controller preferably has a control bandwidth of 1000 Hz or more, so that the motion of the plate can be precisely controlled to realize realistic 6DOF motions. | 12-22-2011 |
| 20110270573 | SYSTEMS AND METHODS FOR AN ADVANCED PEDOMETER - Systems and methods are provided for an advanced pedometer, which may include: a first accelerometer for providing first acceleration information for a first direction; a second accelerometer for providing second acceleration information for a second direction; a third accelerometer for providing third acceleration for a third direction; a clock for providing time information associated with the first acceleration information, the second acceleration information, and the third acceleration information; and a processing module comprising one or more processors. The processing module may be to execute computer-executable instructions to: determine fourth level acceleration information for a plane using the first acceleration information for the first direction, and the second acceleration information for the second direction, where the plane is defined by the first direction and the second direction; and estimate a distance traveled using the fourth level acceleration information, the third acceleration information, and at least a portion of the time information. | 11-03-2011 |
| 20110268168 | METHODS AND SYSTEMS FOR INCREASED COMMUNICATION THROUGHPUT - Systems and methods for increasing communication throughput by superimposing multiple signal components in the same bandwidth are disclosed. Cochannel interference is reduced by using signal separation algorithms. The signal separation algorithms may use both a priori information about the superimposed signals and measured channel parameters. In addition, error correction encoding and interleaving may be used to reduce signal power and obviate the need for ideal signal separation. | 11-03-2011 |
| 20110234314 | Adaptive compensation systems for mitigating distortion due to nonlinear power amplifiers - A method for pre-processing a signal prior to receipt of the signal by a non-linear device (NLD) to compensate for AM-AM distortion and AM-PM distortion of the signal by the NLD. The method includes generating a modified amplitude r | 09-29-2011 |
| 20110221751 | SPACE DEBRIS VISUALIZATION - Certain embodiments of the invention may include systems and methods visualizing space debris events. According to an example embodiment of the invention, a method is provided for visualizing positional probability of objects in space. The method includes receiving initial conditions of the objects, determining projected positions of the objects based, at least in part, on the initial conditions, determining a plurality of 2-dimensional (2D) boundaries around the projected positions; and assembling the plurality of 2D boundaries into a 3-dimensional (3D) representation of the positional probability of objects in space. | 09-15-2011 |
| 20110216856 | SYSTEMS AND METHODS FOR PRE-AVERAGED STAGGERED CONVOLUTION DECIMATING FILTERS - Certain embodiments of the invention may include systems and methods for implementing a multirate digital decimating filter for filtering received symbol data. The method may include sampling the received symbol data at a selected sample rate, pre-averaging the sampled received data to provide two samples per symbol; convolving the pre-averaged samples with decimated finite impulse response (FIR) aperture impulse response coefficients to produce detected output samples, convolving the pre-averaged samples with shifted decimated FIR aperture impulse response coefficients to produce zero-crossing transition samples, and adjusting the sample rate based at least in part on averaging the zero-crossing transition samples. | 09-08-2011 |
| 20110216853 | SYSTEMS AND METHODS FOR SLIDING CONVOLUTION INTERPOLATING FILTERS - Certain embodiments of the invention may include systems and methods for implementing a multirate digital interpolating filter. According to an example embodiment of the invention, the method includes sampling symbol data from one sample per symbol to N samples per symbol, wherein sampling includes: convolving the symbol data with a decimated finite impulse response (FIR) aperture impulse response coefficient set, convolving the symbol data with one or more shifted decimated FIR aperture impulse response coefficient sets, and summing the convolution results to produce interpolated bandlimited data. | 09-08-2011 |
| 20110208504 | SYSTEMS AND METHODS FOR CONCURRENTLY EMULATING MULTIPLE CHANNEL IMPAIRMENTS - Systems and methods are provided for concurrently emulating multiple channel impairments. The systems and methods may include storing a plurality of channel impairment profiles, where each channel impairment profile corresponds to a respective channel impairment type; receiving a selection of two or more of the plurality of channel profiles; generating a composite impairment profile by combining the selected two or more channel profiles, the composite profile specifying time-variant impairments, the composite profile reflecting a combination of the respective impairment types of the selected channel profiles; and applying the time-variant impairments specified by the composite profile to an input real-time data stream to generate an impaired real-time data stream, where a timing of the application of the time-variant impairments is based at least in part upon timing data from a real-time clock. | 08-25-2011 |
| 20110171068 | Photostructured Chemical Devices and Methods for Making Same - A photostructurable ceramic is processed using photostructuring process steps for embedding devices within a photostructurable ceramic volume, the devices may include one or more of chemical, mechanical, electronic, electromagnetic, optical, and acoustic devices, all made in part by creating device material within the ceramic or by disposing a device material through surface ports of the ceramic volume, with the devices being interconnected using internal connections and surface interfaces. | 07-14-2011 |
| 20110170273 | Photostructured Magnetic Devices and Methods for Making Same - A photostructurable ceramic is processed using photostructuring process steps for embedding devices within a photostructurable ceramic volume, the devices may include one or more of chemical, mechanical, electronic, electromagnetic, optical, and acoustic devices, all made in part by creating device material within the ceramic or by disposing a device material through surface ports of the ceramic volume, with the devices being interconnected using internal connections and surface interfaces. | 07-14-2011 |
| 20110170241 | Photostructured Electronic Devices and Methods for Making Same - A photostructurable ceramic is processed using photostructuring process steps for embedding devices within a photostructurable ceramic volume, the devices may include one or more of chemical, mechanical, electrical, electromagnetic, optical, and acoustic devices, all made in part by creating device material within the ceramic or by disposing a device material through surface ports of the ceramic volume, with the devices being interconnected using internal connections and surface interfaces. | 07-14-2011 |
| 20110170210 | Photostructured Optical Devices and Methods for Making Same - A photostructurable ceramic is processed using photostructuring process steps for embedding devices within a photostructurable ceramic volume, the devices including chemical, mechanical, electronic, electromagnetic, optical, and acoustic devices, all made in part by creating device material within the ceramic or by disposing a device material through surface ports of the ceramic volume, with the devices being interconnected using internal connections and surface interfaces. | 07-14-2011 |
| 20110169375 | Photostructured Acoustic Devices and Methods for Making Same - A photostructurable ceramic is processed using photostructuring process steps for embedding devices within a photostructurable ceramic volume, the devices may include one or more of chemical, mechanical, electronic, electromagnetic, optical, and acoustic devices, all made in part by creating device material within the ceramic or by disposing a device material through surface ports of the ceramic volume, with the devices being interconnected using internal connections and surface interfaces. | 07-14-2011 |
| 20110167941 | Photostructured Mechanical Devices and Methods for Making Same - A photostructurable ceramic is processed using photostructuring process steps for embedding devices within a photostructurable ceramic volume, the devices may include one or more of chemical, mechanical, electronic, electromagnetic, optical, and acoustic devices, all made in part by creating device material within the ceramic or by disposing a device material through surface ports of the ceramic volume, with the devices being interconnected using internal connections and surface interfaces. | 07-14-2011 |
| 20110161005 | SYSTEMS AND METHODS FOR END-TO-END LOCATION AND MEDIA CONTENT TRACKING - Systems and methods may provide location and media content tracking. The systems and methods may include receiving, from a personal communications device, location information and at least one media content, the location information indicating one or more historical physical locations of the personal communications device, the at least one media content associated with at least one of the one or more physical locations of the personal communications device; storing an association among an identification of the personal communications device, the at least one media content, and the location information corresponding to the one or more physical locations associated with the at least one media content; receiving, from a client computer, a request to track the personal communications device; and responsive to the request, providing the at least one media content and the corresponding location information to the client computer. | 06-30-2011 |
| 20110133863 | High Power Waveguide Polarizer With Broad Bandwidth and Low Loss, and Methods of Making and Using Same - Embodiments of the invention provide high power waveguide polarizers with broad bandwidth and low loss, and methods of making and using the same. Under one aspect of the present invention, a waveguide polarizer includes a hollow waveguide body having an interior surface; a first ridge disposed on the interior surface of the hollow waveguide body and having an inward-facing surface; and a first plurality of projections disposed on the inward-facing surface of the first ridge. The projections may have a width that is narrower than that of the ridge, and a length that is tunable. The length of the projections may be selected to induce about a 90-degree phase delay in a first mode propagating in a plane parallel to the first ridge relative to a second mode propagating in a plane perpendicular to the first ridge. | 06-09-2011 |
| 20110128178 | COGNITIVE ANTI-JAM RECEIVER SYSTEMS AND ASSOCIATED METHODS - Cognitive anti-jam receiver systems and associated methods are provided. The systems and methods may include a signal analysis module that processes a baseband signal to determine one or more signal characteristics of the baseband signal, the baseband signal comprising at least a desired signal; a cognitive decision unit that receives the one or more signal characteristics from the signal analysis module, and generates at least one first adaptive parameter; and at least one anti-jam processing module that processes the baseband signal to generate a modified signal that reduces an impact of at least one jammer signal on a quality of reception of the desired signal from the baseband signal, where processing by the at least one anti-jam processing module may be based at least in part on the received at least one first adaptive parameter from the cognitive decision unit. | 06-02-2011 |
| 20110102770 | Refraction assisted illumination for imaging - Various embodiments are directed to systems and methods of imaging subsurface features of objects. An illumination source may be directed towards a surface of an object comprising subsurface features at a first angle relative to the normal of the surface. The object may have a portion between the subsurface features and the surface that has an index of refraction that is greater than the index of refraction of a surrounding medium. An imaging device may be placed with an objective lens oriented substantially normal to the surface. The first angle may be larger than an acceptance angle of the objective lens. | 05-05-2011 |
| 20110102615 | Refraction assisted illumination for imaging - An illumination source may be directed towards a surface of an object comprising subsurface features, wherein the illumination from the source is directed at a first angle relative to the normal of the surface. The object may have a portion between the subsurface features and the surface, the portion having an index of refraction that is greater than the index of refraction of a surrounding medium that surrounds the object. An imaging device may be placed with an objective lens. The first angle may be larger than an acceptance angle of the objective lens. In some embodiments, multiple illumination beams may be generated by one or more illumination sources. The beams may be rotated relative to one another about the normal of the surface. Also, in some embodiments, multiple images may be taken with the objective of the imaging device at different positions rotated off of the normal. The multiple images may be combined to generate a composite image. | 05-05-2011 |
| 20110100024 | MULTISTAGE PULSE TUBE COOLERS - Various embodiments are directed to multistage pulse tube coolers. In some embodiments, one or more stages of the pulse tube cooler may comprise a control valve positioned between the hot end of the pulse tube and the reservoir. Also, in various embodiments, one or more inter-stage control valves may be positioned between the pulse tubes of consecutive stages. | 05-05-2011 |
| 20110100023 | VARIABLE PHASE SHIFT DEVICES FOR PULSE TUBE COOLERS - Various embodiments are directed to pulse tube coolers having flow resistance devices that are variable within the thermodynamic cycle of the pulse tube. An example pulse tube may comprise a compressor, a regenerator, a reservoir and a pulse tube. A working fluid may be positioned within the regenerator, pulse tube and reservoir. Further, a variable phase control device may be positioned in a fluid path between the pulse tube and the reservoir. The pulse tube cooler may also comprise a control circuit. The control circuit may be programmed to vary a characteristic of the variable phase control device based on the position of the pulse tube cooler in its thermodynamic cycle. | 05-05-2011 |
| 20110100022 | PHASE SHIFT DEVICES FOR PULSE TUBE COOLERS - Various embodiments are directed to pulse tube coolers and components thereof. A pulse tube cooler may comprise a compressor, a regenerator, a pulse tube and a reservoir. A network of phase control devices may be placed in a fluid path between a hot end of the pulse tube and the reservoir. The network of phase control devices may have at least one flow resistance device and at least one inertance device. | 05-05-2011 |
| 20110094572 | THERMO-PHOTOVOLTAIC POWER GENERATOR FOR EFFICIENTLY CONVERTING THERMAL ENERGY INTO ELECTRIC ENERGY - A thermo-photovoltaic power generator for efficiently converting thermal energy into electric energy including a selective thermal emitter having micropatterned structures for receiving thermal energy and emitting thermal radiation with black body emissivity over a range of wavelengths, low-bandgap photocells responsive to thermal radiation at wavelengths within a particular band of said range of wavelengths and operative to convert such thermal radiation to electric energy, and a band pass filter disposed between the thermal emitter and the photocells for transmitting thermal radiation from the emitter at wavelengths within the particular band to the photocells, and for reflecting thermal radiation at wavelengths outside the particular band back to the emitter. | 04-28-2011 |
| 20110033014 | RECEIVER FOR DETECTING SIGNALS IN THE PRESENCE OF HIGH POWER INTERFERENCE - A RF receiver that comprises: (i) a complex mixer for converting a version of the RF signal to a complex baseband signal comprising an in-phase component and a quadrature component; (ii) one or more analog-to-digital converters (ADCs) connected to the complex mixer for digitizing the in-phase component and the quadrature component of the complex baseband signal; and (iii) a digital signal processor (DSP) connected the one or more ADCs. The DSP is programmed to mitigate interference in the complex baseband signal by a process that comprises the steps of: (i) performing at least one cross correlation operation involving L-length segments of the digitized in-phase and quadrature components of the complex baseband signal; and (ii) concatenating the cross-correlated L-length segments of the digitized in-phase and quadrature components of the complex baseband signal to produce digitized interference mitigated in-phase and quadrature components of the complex baseband signal. | 02-10-2011 |
| 20110033003 | GENERALIZED FREQUENCY MODULATION - A receiver may comprise a complex mixer for converting the modulated signal to a complex modulated signal comprising a first in-phase component and a first quadrature component. The receiver may further comprise a digital demodulator. The digital demodulator may comprise at least one processor circuit programmed for applying a phase differencer for generating an output function in terms of a phase difference of the complex modulated signal. Applying the phase differencer may comprise converting the first in-phase component to a function of a phase difference of the first in-phase component expressed in digital time, and converting the first quadrature component to a function of the phase difference of the first quadrature component expressed in digital time. The at least one processor circuit of the digital demodulator may also be programmed for applying a four quadrant inverse tangent to the output function to generate the information signal. | 02-10-2011 |
| 20110010027 | SYSTEMS AND METHODS FOR ATTITUDE PROPAGATION FOR A SLEWING ANGULAR RATE VECTOR - Computer-based systems and methods for determining attitude of a moveable object. Attitude is determined by a transformation matrix {right arrow over (U)} from a body coordinate frame of the moveable object to an inertial reference frame. The transformation matrix is determined by: (i) determining a slew rate vector, {right arrow over (α)}, for time t | 01-13-2011 |
| 20100293313 | SYSTEMS AND METHODS FOR A CORE MANAGEMENT SYSTEM FOR PARALLEL PROCESSING OF AN EVOLUTIONARY ALGORITHM - Systems and methods are provided for a core management system for parallel processing of an evolutionary algorithm. The systems and methods may include identifying, for a processing environment, a plurality of arriving processors available for utilization; configuring a first number of the plurality of arriving processors as master processors for the processing environment; configuring a respective second number of the plurality of arriving processors as slave processors, where each master processor is assigned one or more of the slave processors for the processing environment, where each master processor maintains timing data associated with available processing resources at the respective master processor, where each master processor is operative to calculate a respective target number of slaves based upon the respective timing data; and reconfiguring a current number of slave processors assigned to one or more respective master processors based upon the respective timing data calculated for the one or more respective master processors. | 11-18-2010 |
| 20100293122 | SYSTEMS AND METHODS FOR AN APPLICATION PROGRAM INTERFACE TO AN EVOLUTIONARY SOFTWARE PROGRAM - Systems and methods may include an application program interface that enables a user to: specify parameters associated with an evolutionary algorithm, where an execution of the evolutionary algorithm is in accordance with the specified parameters; define a chromosome data structure that includes a plurality of variables that are permitted to evolve in value in accordance with the execution of the evolutionary algorithm in order to generate one or more child chromosome data structures; identify one or more objective functions for evaluating chromosome data structures, including the generated one or more child chromosome data structures; and define an output format for providing one or more optimal chromosome data structures of the evaluated generated child chromosome data structures as designs to the identified objective functions. | 11-18-2010 |
| 20100293121 | SYSTEMS AND METHODS FOR PARALLEL PROCESSING WITH INFEASIBILITY CHECKING MECHANISM - Systems and methods may include obtaining an input population of parent chromosome data structures, where each parent chromosome data structure provides having a plurality of genes representative of variables in which associated values are permitted to evolve; selecting pairs of parent chromosome data structures from the input population; allocating the selected pairs of parent chromosome data structures to respective ones of a plurality of slave processors, where each slave processor applies an evolutionary process to genes of the allocated pair to generate a plurality of child chromosome data structures; receiving a portion of the plurality of child chromosome data structures generated by the plurality of slave processors; merging the parent chromosome data structures with at least the received portion of the child chromosome data structures to generate a merged set of chromosome data structures; and identifying a portion of the merged set of chromosome data structures as an elite set of chromosome data structures. | 11-18-2010 |
| 20100293120 | SYSTEMS AND METHODS FOR BOX FITNESS TERMINATION OF A JOB OF AN EVOLUTIONARY SOFTWARE PROGRAM - Systems and methods may include receiving a respective plurality of objective function values for each chromosome data structure of a population, where the respective plurality of objective function values are obtained based upon an evaluation of each chromosome data structure; mapping the respective objective function values to respective epsilon values, where the respective epsilon values define a respective address associated with the plurality of objective functions; and performing non-domination sorting of the population to generate a reduced population of chromosome data structures; and performing epsilon non-dominated sorting to identify an elite set of addresses, where the prior steps are performed for a current generation, where the elite set of addresses are compared to a prior elite set of addresses for a predetermined number of prior generations to determine one or more variance values, where the one or more variance values are utilized to determine whether a current job of an evolutionary algorithm is to be halted. | 11-18-2010 |
| 20100293119 | SYSTEMS AND METHODS FOR PARALLEL PROCESSING OPTIMIZATION FOR AN EVOLUTIONARY ALGORITHM - The systems and methods may include receiving an initial population of parent chromosome data structures, where each parent chromosome data structure provides a plurality of genes; selecting pairs of parent chromosome data structures; applying at least one evolutionary operator to the genes of the selected pairs to generate a plurality of child chromosome data structures; allocating, the generated plurality of child chromosome structures to a plurality slave processors, where each slave processor evaluates one or more of the plurality of child chromosome data structures and generates respective objective function values; receiving objective function values for a portion of the plurality of allocated child chromosome data structures; merging the parent chromosome data structures with the received portion of the child chromosome data structures for which objective function values have been received; and identifying a portion of the merged set of chromosome data structures as an elite set of chromosome data structures. | 11-18-2010 |
| 20100292929 | SYSTEMS AND METHODS FOR GENERATING FEASIBLE SOLUTIONS FROM TWO PARENTS FOR AN EVOLUTIONARY PROCESS - Systems and methods may include receiving a pair of parent chromosome data structures, where each parent chromosome data structure provides a plurality of genes representative of variables that are permitted to evolve; combining genes of the two parent chromosome data structures to generate at least one first child chromosome data structure; evaluating the at least one first child chromosome data structures according to a plurality of constraint functions to generate a respective plurality of constraint function values for each of the at least one first child chromosome data structure, where the constraint functions define constraints on a feasible solution set; determining whether any of the at least one first child chromosome data structure is within the feasible solution set. | 11-18-2010 |
| 20100292928 | SYSTEMS AND METHODS FOR GENERATING RANDOM FEASIBLE SOLUTIONS FOR AN EVOLUTIONARY PROCESS - Systems and methods may include identifying an input population of parent chromosome data structures, where each parent chromosome data structure provides a plurality of genes representative of variables in which associated values are permitted to evolve; selecting pairs of parent chromosome data structures from the input population of parent chromosome data structures; combining genes of each selected pair of parent chromosome data structures according to at least one evolutionary operator to generate a plurality of child chromosome data structures; evaluating the plurality of child chromosome data structures according to a plurality of constraint functions to generate a respective plurality of constraint function values for each child chromosome data structure, where the constraint functions define constraints on a feasible solution set; determining whether any of the plurality of child chromosome data structures are within the feasible solution set based upon the respective plurality of constraint violation function values. | 11-18-2010 |
| 20100046589 | GPS M-CODE RECEIVER TRACKING SYSTEM - An m-code GPS receiver receives m-code GPS communication signals having a multimodal autocorrelation, using an m-code mode identifier unambiguously determining a mode value of one of the m-code modal peaks coherently aligned to a coherent unimodal detected envelope, based on sequential probability estimation in an m-code envelope tracking filter using filter residual estimation or with a coherent m-code and c/a-code tracking filter also based on filter residual estimation, for generating m-code phase errors, for unambiguous and precise m-code code phase tracking in closed feedback loops, for preferred use in navigation systems. | 02-25-2010 |
| 20090174601 | SYSTEM AND METHOD FOR ANTENNA TRACKING - A method includes determining if a dynamics requirement for an antenna positioner is exceeded, and employing a combination of mechanical and electronic beam steering techniques to steer a single antenna beam if the dynamics requirement is exceeded. | 07-09-2009 |
| 20090133405 | Combustible outgassing material lined altitude compensating rocket nozzle - A fixed sized bell rocket nozzle is lined with a layer of combustible material that is ignited during launch ignition and burns to outgas into the rocket exhaust for spatially variably confining the exhaust and perfecting an effective variably sized altitude compensating exhaust nozzle that maximizes lift during the launch of a spacecraft into orbit. | 05-28-2009 |
| 20090033575 | SYSTEM AND METHOD FOR ANTENNA TRACKING - A method includes determining if a dynamics requirement for an antenna positioner is exceeded, and employing a combination of mechanical and electronic beam steering techniques to steer a single antenna beam if the dynamics requirement is exceeded. | 02-05-2009 |
