Patent application number | Description | Published |
20080309553 | Systems and Methods for Mitigating Multipath Signals - Systems and methods for mitigating multipath signals in a receiver are provided. In this regard, a representative system, among others, includes a receiver comprising an antenna being configured to receive signals from a plurality of satellites, and a computing device being configured to: generate pseudorange measurements based on the received satellites signals, process the generated pseudorange measurements to reduce its pseudorange residuals based on statistical modeling in order to mitigate multipath errors, and compute navigation solutions based on the processed pseudorange measurements. A representative method, among others, for mitigating multipath signals in a receiver, comprises: receiving the pseudorange measurements; processing the received pseudorange measurements to reduce its pseudorange residuals based on statistical modeling in order to mitigate multipath errors; and computing navigation solutions based on the processed pseudorange measurements. | 12-18-2008 |
20090110134 | Noise Floor Independent Delay-Locked Loop Discriminator - A system and method for providing code tracking in a CDMA based communications receiver. In example systems and methods, a CDMA receiver, such as a GPS receiver, receives a signal and demodulates the signal to yield a digital IF signal. The digital IF signal is down-converted to a received code signal. Early, prompt and late correlation results are determined by correlating the received code signal with early, prompt and late duplicates of the received code signal. The early, prompt and late correlation results are used to calculate a code phase error using a noise-floor independent function of all three correlation results. | 04-30-2009 |
20090128407 | Systems and Methods for Detecting GPS Measurement Errors - Systems and methods for detecting global positioning system (GPS) measurement errors are provided. In this regard, a representative system, among others, includes a navigation device that is configured to receive GPS signals from signal sources, the navigation device being configured to calculate pseudoranges (PRs) and delta ranges (DRs) based on the received GPS signals, the navigation device including a consistency check algorithm that is configured to: determine mismatches between the respective calculated PRs and DRs, and indicate that an error exists in the respective calculated PRs and DRs based on their mismatch and mismatch accumulations. This algorithm can be independent of navigation state and is capable of detecting slow-changing errors. | 05-21-2009 |
20090254275 | Systems and Methods for Monitoring Navigation State Errors - Systems and methods for monitoring navigation state errors are provided. In this regard, a representative system, among others, includes a receiver that is configured to receive GPS signals and calculate pseudorange (PR) residuals, the receiver including a navigation state error manager that is configured to: calculate a distance traveled by the receiver having the PR residuals, determine whether a navigation state has errors based on the calculated PR residuals and calculated distance, and responsive to determining that the navigation state has errors, send an error message indicating that the navigation state has errors. | 10-08-2009 |
20100328146 | Systems and Methods for Synthesizing GPS Measurements to Improve GPS Location Availability - There are situations where GPS signals are received from less than four satellites. In order to improve the GPS location availability, disclosed here are systems and methods for synthesizing GPS measurements, which, together with fewer than four available real GPS signals, can be used to calculate a position fix. In particular, GPS range measurements for lost satellites, which are satellites that were previously tracked but are now not tracked, are synthesized to improve GPS signal availability. The synthesized measurements are used along with real measurements to enable accurate position fix even when GPS satellite availability is poor. Different synthesized measurement generation schemes, depending on whether an INS/DR aiding system is available, are further described herein. | 12-30-2010 |
20120188121 | SYSTEMS AND METHODS FOR SYNTHESIZING GPS MEASUREMENTS TO IMPROVE GPS LOCATION AVAILABILITY - There are situations where GPS signals are received from less than four satellites. In order to improve the GPS location availability, disclosed here are systems and methods for synthesizing GPS measurements, which, together with fewer than four available real GPS signals, can be used to calculate a position fix. In particular, GPS range measurements for lost satellites, which are satellites that were previously tracked but are now not tracked, are synthesized to improve GPS signal availability. The synthesized measurements are used along with real measurements to enable accurate position fix even when GPS satellite availability is poor. Different synthesized measurement generation schemes, depending on whether an INS/DR aiding system is available, are further described herein. | 07-26-2012 |
Patent application number | Description | Published |
20080241641 | Membrane electrode assembly for fuel cell and process for manufacturing the same - A membrane electrode assembly for fuel cell includes a membrane, a cathode electrode layer, a cathode gas diffusion layer, an anode electrode layer, and an anode gas diffusion layer. At least one of the cathode electrode layer and the anode electrode layer includes a catalytic layer, and a water-repellent layer. The catalytic layer contains first electrically-conductive fibers and a catalyst, and is disposed on a side of the membrane in the thickness-wise direction of the membrane electrode assembly. The water-repellent layer contains second electrically-conductive fibers and a water repellent, and is disposed more away from the membrane than the catalytic layer is disposed in the thickness-wise direction of the membrane electrode assembly. The first electrically-conductive fibers exhibit a first fibrous average length. The second electrically-conductive fibers exhibit a second fibrous average length. The first average fibrous length is longer than the second average fibrous length. | 10-02-2008 |
20090325795 | METHOD FOR PRODUCING PLATINUM NANOPARTICLES - A producing method includes a preparing step of preparing a chemical compound having at least one of elements of alkali metals and alkali earth metals along with platinum, and a reducing step of reducing the prepared chemical compound with a reducing agent to form platinum nanoparticles. | 12-31-2009 |
20100304240 | MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELL, FUEL CELL, AND FUEL CELL SYSTEM - A membrane electrode assembly includes an ion conducting membrane; an anode catalyst layer arranged on one side of the ion conducting membrane; a cathode catalyst layer arranged on the other side of the ion conducting membrane; an anode diffusion layer arranged on an outer side of the anode catalyst layer; and a cathode diffusion layer arranged on an outer side of the cathode catalyst layer. Only in the anode catalyst layer, the density of a first catalyst layer portion located close to the anode diffusion layer is smaller than the density of a second catalyst layer portion located close to the ion conducting membrane. | 12-02-2010 |
20120301663 | CARBON NANOTUBE COMPOSITE AND METHOD FOR MAKING THE SAME - Disclosed are a carbon nanotube composite and a method for making the same advantageous for achieving a higher density of a carbon nanotube assembly. The carbon nanotube composite includes a substrate and a carbon nanotube assembly mounted on the surface of the substrate. The carbon nanotube assembly is composed of multiple carbon nanotubes arranged densely in parallel oriented in the direction upward from the surface of the substrate. The carbon nanotube assembly has a density of 70 mg/cm | 11-29-2012 |
20130136982 | ELECTROCHEMICAL DEVICE USING MAGNESIUM ELEMENT-CONTAINING NEGATIVE ELECTRODE - An electrochemical device includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution, wherein the negative electrode contains a magnesium element, and wherein the nonaqueous electrolytic solution is one obtained after dipping metallic lithium for a predetermined time period. | 05-30-2013 |
20130156956 | CARBON NANOTUBE PRODUCTION METHOD - A carbon nanotube production method forms a carbon nanotube aggregate having a high perpendicular orientation characteristic where a plurality of carbon nanotubes are aligned in a direction perpendicular to a surface of a substrate, without using terpineol, which is a viscosity improver. A catalyst solution having a predetermined concentration (from 0.2 M to 0.8 M) of a transition metal salt dissolved therein, and free of terpineol is prepared. Catalyst particles are caused to be present on the surface of the substrate by making the catalyst solution contact with the surface of the substrate. By making a carbon nanotube forming gas contact with the surface of the substrate in a carbon nanotube forming temperature region, the carbon nanotube aggregate is grown on the surface of the substrate where a plurality of carbon nanotubes are aligned in the direction perpendicular to the surface of the substrate. | 06-20-2013 |
20140127586 | ALIGNED CARBON NANOTUBE ASSEMBLY, CARBON-BASED ELECTRODE, POWER STORAGE DEVICE, AND METHOD OF MANUFACTURING ALIGNED CARBON NANOTUBE ASSEMBLY - The present invention provides an aligned carbon nanotube assembly constituted of carbon nanotubes each having a defective pore on its side surface, a method of manufacturing the aligned carbon nanotube assembly, a carbon-based electrode, and a power storage device. The aligned carbon nanotube assembly is formed by aggregating a large number of carbon nanotubes aligned in parallel along the same direction and having parallel orientation. In such a state that the aligned carbon nanotube assembly remains grown, the carbon nanotube constituting the aligned carbon nanotube assembly has a defective pore on its side surface. In a raman spectrum of the aligned carbon nanotube assembly in a Raman spectrometric method, when intensity of scattered light in D-band is represented by I | 05-08-2014 |
20140294715 | METHOD OF MANUFACTURING FERROUS OXIDE NANOPARTICLE, METHOD OF FORMING CARBON NANOTUBE, AND FERROUS OXIDE NANOPARTICLE - A method of manufacturing a ferrous oxide nanoparticle includes a water removing step raising temperature of a solution containing an iron oxide, an organic acid dissolving the iron oxide, and a first solvent to a first temperature and removing water in the solution, a second temperature maintaining step raising the first temperature to a second temperature and maintaining the second temperature, and a particle extracting step extracting the ferrous oxide nanoparticle from the solution after the second temperature maintaining step. | 10-02-2014 |
20150270576 | NONAQUEOUS LIQUID ELECTROLYTE - A nonaqueous liquid electrolyte for an energy storage device that utilizes at least one of an oxidation reaction and a reduction reaction of magnesium, the nonaqueous liquid electrolyte includes an ether solvent, magnesium halide serving as an electrolyte, and aluminum halide serving as an additive, the magnesium halide and the aluminum halide being dissolved in the ether solvent. | 09-24-2015 |
Patent application number | Description | Published |
20100232351 | UTILIZING SBAS SIGNALS TO IMPROVE GNSS RECEIVER PERFORMANCE - The present invention provides methods of improving GNSS receivers' satellite signal acquisition and TIFF performances by taking advantage of SBAS signals. Due to a SBAS satellite's geostationary position and typically strong signal, the SBAS satellite signal can be acquired more quickly than a GPS satellite signal. Once a SBAS satellite signal is acquired the Doppler frequency search uncertainty may be reduced for remaining GNSS satellites which are to be acquired. Furthermore, a satellite search list may be optimized to search for satellites close to the line of sight (LOS) of the SBAS satellite for which a signal has been acquired, in receiver “warm” and “hot” start modes. Moreover, since a SBAS signal sub-frame is only one second long, which is shorter than six seconds for a GPS signal sub-frame, synchronization of the SBAS signal sub-frame may be achieved faster than for GPS signals. With aided time information, a receiver may compute the absolute time of week (TOW) from a sub-frame synchronized SBAS signal. Therefore, without necessarily waiting for TOW to be decoded from a GPS signal and with TOW extracted from a SBAS signal, a receiver can achieve better TTFF performance. | 09-16-2010 |
20140292572 | UTILIZING SBAS SIGNALS TO IMPROVE GNSS RECEIVER PERFORMANCE - The present invention provides methods of improving GNSS receivers' satellite signal acquisition and TTFF performances by taking advantage of SBAS signals. Due to a SBAS satellite's geostationary position and typically strong signal, the SBAS satellite signal can be acquired more quickly than a GPS satellite signal. Once a SBAS satellite signal is acquired the Doppler frequency search uncertainty may be reduced for remaining GNSS satellites which are to be acquired. Furthermore, a satellite search list may be optimized to search for satellites close to the line of sight (LOS) of the SBAS satellite for which a signal has been acquired, in receiver “warm” and “hot” start modes. | 10-02-2014 |
Patent application number | Description | Published |
20110173336 | BARRIER BOUNDARY NODE AND METHOD FOR ESTABLISHING CONNECTION BETWEEN BARRIER BOUNDARY NODES - The present invention discloses a block boundary node and a method for setting up a connection between block boundary nodes. The block boundary node comprises a connection controller, a link resource manager and a route controller. The method comprises: an ingress boundary node querying and verifying block information of an ingress subnet point after receiving a connection setup request message, and sending a block information query request to an egress boundary node upon successful verification; the egress boundary node querying and verifying block information of an egress subnet point after receiving the block information query request, and sending the block information to the ingress boundary node upon successful verification; the ingress boundary node querying route by using the block information of the ingress subnet point and egress subnet point as query parameters, and sending a connection setup request message to the egress boundary node upon querying the route successfully; and the ingress boundary node receiving a connection setup acknowledgement message returned by the egress boundary node, thus the connection setup is complete. The present invention allows invalid flood information to be reduced efficiently while ensuring success rate of connection setup. | 07-14-2011 |
20120003876 | HDMI CONNECTOR - A HDMI connector includes a metallic housing having two plates respectively extending downward from two opposite sides thereof, an insulated body mounted in the metallic housing, and a plurality of electrically conducting pins installed with the insulated body. The metallic housing has two legs each located in front of a respective one of the plates, each leg being integrally formed by cutting a portion of the metallic housing and bending the portion downward. Each leg has a base portion and a solder portion extending from the base portion to be electrically connected to a printed circuit board. The HDMI connector can save material in manufacturing and increase space availability. | 01-05-2012 |
20120230330 | METHOD FOR CONTROLLING AREA BOUNDARY, METHOD AND SYSTEM FOR ESTABLISHING CONNECTION IN MULTILAYER NETWORK - A method for controlling area boundary, and a method and system for establishing connection in a multilayer network are provided. With a Path Computation Element (PCE) computing a network path and sending response message carrying layer boundary information to a Path Computation Client (PCC), in the present invention, a multilayer network connection can be established rapidly, thereby reducing the time for establishing the multilayer network connection. | 09-13-2012 |
Patent application number | Description | Published |
20120134683 | OPTOELECTRONIC PROCESSING APPARATUS AND PROCESSING METHOD FOR CONSTRAINT INFORMATION - The invention provides an optoelectronic processing apparatus and methods for processing constraint information. The optoelectronic processing apparatus is applied to the optical transport network OTN device, and comprises: a 3R regeneration unit for reamplifying, reshaping and retiming a signal; a wavelength conversion unit for performing wavelength conversion to the signal; an interlayer adapting unit for converting the signal between the OCh layer and the ODUk layer; and a dispatching unit for dispatching the 3R regeneration unit, the wavelength conversion unit and the interlayer adapting unit according to a function identification parameter of the optoelectronic processing apparatus so as to process the signal. By the present invention, the management of the OTN device is simplified, and the 3R regeneration, wavelength conversion and optoelectronic interlayer adaptation information are managed uniformly. | 05-31-2012 |
20120141123 | ADAPTING APPARATUS AND METHOD - The present invention discloses an adapting apparatus and method, the apparatus comprises: an adapter pool, wherein the adapter pool is located between an optical data unit (ODUk) layer and an optical channel (OCh) layer, and the adapter pool comprises one or more adapters which are respectively connected to an OCh layer link and an ODUK layer link; the information that the adapter pool used for managing comprises: information for indicating connectivity of the adapter with the OCh layer link and with the ODUk layer link, and information for indicating an adapter capability of the adapter. The adapting information between MRNs can be described more accurately through the present invention, and the correctness of the route calculation results is guaranteed. | 06-07-2012 |
20130216223 | Method and device for obtaining routing information of electro-optical multi-layer network - The present disclosure provides a method and device for obtaining the routing information of an electro-optical multi-layer network. The ports on which an optical transmitter and an optical receiver are located are determined, and the electro-optical conversion information is added to the routing information on a port of the optical layer node side or the electro layer node side on which the optical transmitter and the optical receiver are located. The electro-optical conversion information includes but is not limited to the wavelength tuning capability and signal processing capability. Through the extending of the current Multi-Layer Network (MLN) information model and Wavelength Switched Optical Network (WSON) information model, the present disclosure describes the routing information including the electro-optical conversion information of the present disclosure more accurately, and perfects the electro-optical multi-layer network information model, and improves the accuracy of the path calculation to reach the optimization. | 08-22-2013 |