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| Number | Title | Issue Date |
| 8004459 | Determining a geolocation solution of an emitter on earth using satellite signals Embodiments provide systems and methods for determining the geolocation of an emitter on earth. A solution is obtained from two TDOA measurements that need not be acquired at the same time. A solution is obtained from a TDOA measurement and an FDOA measurement that ... | 08/23/2011 |
| 7437225 | Flight management system The present invention is a system and method for providing flight management to one or more aircraft via a communication link between a fight management system located outside the aircraft and a flight management system located inside the aircraft. Remote flight man... | 10/14/2008 |
| 7406311 | Method and apparatus for selectively operating satellites in tundra orbits A satellite system provides geosynchronous satellites in elliptical orbits in respective elliptical orbital planes separated by 120 degrees. The satellites traverse a common figure-eight ground track comprising northern and southern loops. The satellites are control... | 07/29/2008 |
| 7372403 | System and method for position determination by impulse radio A system and a method for position determination by impulse radio where first position information is determined for a first impulse radio using a positioning system, second position information is determined for the first impulse radio using at least one second imp... | 05/13/2008 |
| 7366463 | Military UHF and commercial Geo-mobile system combination for radio signal relay A radio signal relay device such as satellite is used to cover several relatively small geographical regions with relatively narrow beams as well as a relatively large geographical region with a single beam. This relatively wide beam permits legacy equipment to be u... | 04/29/2008 |
| 7340259 | Robust, efficient, localization system Replica correlation processing, and associated representative signal-data reduction and reconstruction techniques, are used to detect signals of interest and obtain robust measures of received-signal parameters, such as time differences of signal arrival and directi... | 03/04/2008 |
| 7340230 | Receiver architectures utilizing coarse analog tuning and associated methods Receiver architectures and associated methods are disclosed that provide initial analog coarse tuning of desired channels within a received signal spectrum, such as a set-top box signal spectrum for satellite communications. These architectures provide significant a... | 03/04/2008 |
| 7315258 | System and method for programming a code of an emergency call transmitter A system for programming a code for a wireless short range RF transmitter, for example, an emergency call transmitter or keyless entry, has a RF transmitter that transmits an RF signal containing a code. A code receiver receives a signal containing a code and a proc... | 01/01/2008 |
| 7277641 | Multiple access space communications optical system using a common telescope aperture The present invention relates to a multiple access space laser communications optical system. According to the present invention, multiple optical signals containing a number of channels are simultaneously received and demultiplexed at a multiple access communicatio... | 10/02/2007 |
| 7274332 | Multiple evaluators for evaluation of a purality of conditions A system and method is disclosed for locating people or objects. In particular, a system and method for locating a wireless mobile station using a plurality of mobile station location estimators is disclosed. The system is useful for 911 emergency calls, tracking, r... | 09/25/2007 |
| 7231197 | Angle rate interferometer and passive ranger A receiver includes a processor and an RF bridge. The RF bridge is coupled to the processor to receive a reference signal from the processor. The RF bridge includes first and second frequency converters coupled to respective first and second antennas. The RF bridge ... | 06/12/2007 |
| 7215954 | Resource allocation method for multi-platform communication system A mobile wireless communications system including a plurality of individual transponding nodes of various types, all in communication with a central processing hub. A local user signal is processed by the central processing hub and radiated through multiple paths to... | 05/08/2007 |
| 7182089 | Magnetically navigable device with associated magnetic element A magnetically navigable device has a magnet element with a greater extent in one direction than at right angles thereto. The magnet element is arranged asymmetrically with respect to a central axis of the device which points in the direction in which the magnet ele... | 02/27/2007 |
| 7184761 | Satellite communications system A communication system has a plurality of ground stations for communicating communication signal to a plurality of satellites located in an inclined elliptical sub-geosynchronous orbit with respect to the earth. The plurality of satellites operate in a service area ... | 02/27/2007 |
| 7181162 | Communication system using multiple link terminals A communication system has a plurality of bases stations generating communication portions from a base station communication signal. The plurality of base stations are capable of using the entire allocated bandwidth to generate the base station communication portion... | 02/20/2007 |
| 7177592 | Wireless communication system with split spot beam payload A wireless communication system includes multiple wireless communication platforms carrying reflectors for providing spot beams. By using multiple platforms, the payload can be split. Each platform carries only a part of the reflectors needed to provide coverage for... | 02/13/2007 |
| 7167704 | Communication system using multiple link terminals for aircraft A communication system has a communication infrastructure and a gateway station communicating a communication signal to the communication infrastructure. An airplane having an antenna coupled to a processing circuit for establishing a plurality of multiple communica... | 01/23/2007 |
| 7167694 | Integrated multi-tuner satellite receiver architecture and associated method Multi-tuner receiver architectures and associated methods are disclosed that provide initial analog coarse tuning of desired channels within a received signal spectrum, such as transponder channels within a set-top box signal spectrum for satellite communications. T... | 01/23/2007 |
| 7123943 | Method of generating directional antenna beams, and radio transmitter A method of forming directional antenna beams, comprising: directing at least two antenna beam signals by means of a beam formation matrix and pre-phasing pre-determined antenna beam signals formed with an antenna array in such a way that the signal of at least one ... | 10/17/2006 |
| 7107007 | Positioning system for a geostationary satellite A positioning system for a geostationary satellite according to the present invention comprises a plurality of outer orbit satellites revolving around the earth in equatorial orbit and polar orbit having higher altitude than that of the geostationary satellite; and ... | 09/12/2006 |
| 7103317 | Communication system using multiple link terminals for aircraft A communication system has a communication infrastructure and a gateway station communicating a communication signal to the communication infrastructure. An airplane having an antenna coupled to a processing circuit for establishing a plurality of multiple communica... | 09/05/2006 |
| 7096120 | Method and arrangement for guiding a user along a target path An audio-based guide arrangement is provided for guiding a user along a target path by the use of virtual audio beacons. The user's current location is sensed and compared to the target path. Sounds are fed to the user, for example through stereo headphones, to simu... | 08/22/2006 |
| 7089000 | Multi-node wireless communication system with multiple transponding platforms A mobile wireless communications system including a plurality of individual transponding platforms all in communication with a central processing hub. A signal processed by the central processing hub is radiated simultaneously through multiple paths to a plurality o... | 08/08/2006 |
| 7072611 | Method and system for improving communication A modular cellular wireless communication base station includes a plurality of active radiator modules located at a desired antenna location. Each module includes at least one antenna, a transmitter, and a receiver. A beam forming network controls relative amplitude... | 07/04/2006 |
| 7069111 | Method and system for controlling a robot A system and method are described that use impulse radio technology to enhance the capabilities of a robot. In one embodiment, a system, a robot and a method are provided that use the communication capabilities of impulse radio technology to help a control station b... | 06/27/2006 |
| 7068733 | Sampling technique for digital beam former A mobile satellite payload 18 and a method for sampling communication signals 26 are provided. The mobile satellite payload 18 uses a plurality of receive radiating elements 24 within a phase array antenna 22 to convert the communi... | 06/27/2006 |
| 7068704 | Embedded chirp signal for position determination in cellular communication systems Systems and methods are described here for locating the position of a mobile terminal in a cellular communications system. A base station in the cellular communication system broadcasts a communication signal having embedded therein a navigation signal. The navigati... | 06/27/2006 |
| 7058140 | Sliding-window multi-carrier frequency division multiplexing system A sliding-window multi-carrier communication system is described, wherein the carriers are orthogonal in a local sense, but not necessarily in a global sense. In one embodiment, the system allows a reduction of the length of the basis function time as compared to co... | 06/06/2006 |
| 7046718 | Coherent phase synchronous code division multiple access communications from multiple transponder platforms A method for coherent phase synchronous CDMA communications between a gateway and multiple subscribers via multiple transponder platforms that includes the step of synchronizing a local reference clock for each subscriber in a service area to a single master referen... | 05/16/2006 |
| 7019882 | Generation of M-ary digital signaling constellations directly at lightwave frequencies A coherent optical link includes a laser master oscillator operative to generate an amplitude- and phase-stable narrow linewidth optical carrier, a first programmable read-only memory (PROM) having an input for receiving and encoding an M-ary data word, a first digi... | 03/28/2006 |
| 7006838 | System and method for locating sources of unknown wireless radio signals A system and method for determining the location of a source (target device) of a wireless radio signal of an unknown or arbitrary type for which a signal correlator is not known or available. The target device's signal is received at a plurality of known locations ... | 02/28/2006 |
| 6978208 | Information center for communications-type navigation device A communications-type car navigation system including a vehicle-mounted terminal and a server. When transferring, to the terminal, the result of a route searching which the server has performed, the server transfers the data that will satisfy the requirements of a r... | 12/20/2005 |
| 6973152 | Exploiting shortest path for improved network clock distribution Apparatus and methods are provided for exploiting the existence of a shortest path between a source device and a destination device by identifying the shortest path and using the signal which has taken the shortest path in preference to delayed transmissions or dela... | 12/06/2005 |
| 6973316 | Position detecting method and apparatus A sufficiently great processing gain is obtained by employing a sufficiently long symbol duration for a measuring signal, whereby it is possible to obtain both an increased communicable distance of the measuring signal and a reduced interference amount. Therefore it... | 12/06/2005 |
| 6954613 | Fixed satellite constellation system employing non-geostationary satellites in sub-geosynchronous elliptical orbits with common ground tracks Shows orbit-constellation of satellites that appears virtually geosynchronous. ... | 10/11/2005 |
| 6952181 | Locating a mobile station using a plurality of wireless networks and applications therefor A location is disclosed for wireless telecommunication infrastructures. The systems output requested locations of hand sets or mobile stations (MS) based on, e.g., AMPS, NAMPS, CDMA or TDMA communication standards. The system determines both local MS locations, and ... | 10/04/2005 |
| 6941138 | Concurrent communications between a user terminal and multiple stratospheric transponder platforms A method for communicating between a user terminal and multiple stratospheric transponder platforms includes the steps of positioning a plurality of stratospheric transponder platforms (102, 104, 106, 108) in a substantially fixed position (152) with r... | 09/06/2005 |
| 6931232 | Bi-static communication relay architecture A bi-static communication relay includes a receiver and transmitter carried by different platforms. In particular, the transmitter may be carried by a geosynchronous satellite forming a broadcast platform. The receiver is hidden on a low observable platform, such as... | 08/16/2005 |
| 6920309 | User positioning technique for multi-platform communication system A mobile wireless communications system including a plurality of individual transponding nodes all in communication with a central processing hub. A local user signal is processed by the central processing hub and radiated through multiple paths to a plurality of th... | 07/19/2005 |
| 6909875 | Multi-platform wireless communication system for a variety of different user types A mobile wireless communications system including a plurality of individual transponding nodes of various types, all in communication with a central processing hub. A local user signal is processed by the central processing hub and radiated through multiple paths to... | 06/21/2005 |
