| 1 2 3 4 |
| Patent ID | Title | Date Filed |
| 6643320 | Receiver for DS-CDMA signals
| November 8, 1999 |
| 6634602 | Artificial satellite with an orbit having a long staying time in a zenith direction, an orbit control method and a communication system therewith
| July 9, 2002 |
| 6611757 | Global positioning system tag system
| May 28, 2002 |
| 6611683 | Elliptical satellite system which emulates the characteristics of geosynchronous satellites
| April 10, 2000 |
| 6611226 | Satellite surveillance system and method
| April 10, 2002 |
| 6597989 | Non-geostationary orbit satellite constellation for continuous coverage of northern latitudes
| November 10, 2001 |
| 6594469 | Methods and apparatus for broadcasting regional information over a satellite communication system
| August 29, 2000 |
| 6587669 | Method and apparatus for controlling spot beam configurations for a communications satellite
| August 20, 2002 |
| 6573799 | Clock system and corresponding method for providing a clock time accounting for systematic error
| December 12, 2001 |
| 6553210 | Single antenna for receipt of signals from multiple communications systems
| November 22, 1999 |
| 6515617 | Method and system for position determination using geostationary earth orbit satellite
| November 25, 1998 |
| 6501423 | Method and system of directing an antenna in a two-way satellite system
| May 6, 2002 |
| 6501419 | Sensor system and method for determining yaw orientation of a satellite
| April 2, 2001 |
| 6499698 | Satellite, satellite control method and satellite communication system
| September 12, 2001 |
| 6477153 | Method and apparatus for using the sidelobe of a long range antenna for a short range communication link
| April 17, 2000 |
| 6470058 | System for and method of jointly optimizing the transmit antenna patterns of two geostationary satellites in a satellite broadcasting system
| June 11, 2001 |
| 6463282 | Non-uniform multi-beam satellite communications system and method
| April 16, 2001 |
| 6463281 | Non-uniform multi-beam satellite communications system and method
| April 19, 2000 |
| 6459898 | Information traffic and performance monitoring for multi-beam satellites with on-board switching
| November 19, 1999 |
| 6456846 | Non-uniform multi-beam satellite communications method
| August 29, 2001 |
| 6453150 | Maximum-ratio synthetic transmission diversity device
| May 27, 1998 |
| 6452539 | Apparatus and method for controlling radiation of electric waves
| December 5, 2000 |
| 6452538 | Satellite system for monitoring space
| September 16, 2000 |
| 6449486 | Multiple location estimates in a cellular communication system
| May 25, 1999 |
| 6441782 | Method and system of directing an antenna in a two-way satellite system
| February 20, 2001 |
| 6427121 | Global positioning system tag system
| July 12, 2001 |
| 6424913 | GPS navigational system and associated process for space applications
| February 22, 2000 |
| 6421000 | GPS multipath mitigation using a multi-element antenna array
| June 8, 2000 |
| 6417799 | Method of locating an interfering transmitter for a satellite telecommunications system
| November 28, 2000 |
| 6408178 | Systems and methods for resolving GPS pseudo-range ambiguity
| March 29, 1999 |
| 6400306 | Multi-channel moving target radar detection and imaging apparatus and method
| December 17, 1999 |
| 6389409 | Method for obtaining unified information graph from multiple information resources
| June 26, 1998 |
| 6370476 | Interpolation of survey coordinate differences
| March 5, 1999 |
| 6362772 | Transponder plot system and method
| May 27, 2000 |
| 6359584 | Radar for space-borne use
| September 22, 2000 |
| 6356437 | System, apparatus and method for providing a portable customizable maintenance support instruction system
| September 29, 1999 |
| 6341213 | Dynamic repeater configuration for multilink satellite systems with robust subchannel interconnect capability
| August 11, 1999 |
| 6328264 | Artificial satellite with an orbit having a long staying time in a zenith direction, an orbit control method and a communication system therewith
| September 29, 2000 |
| 6324586 | System for synchronizing multiple computers with a common timing reference
| September 17, 1998 |
| 6324448 | Methods, apparatus and computer program products for determining the vertical speed of an aircraft
| May 12, 2000 |
| 6323817 | Antenna cluster configuration for wide-angle coverage
| January 19, 2000 |
| 6323804 | Method and apparatus for GPS time determination
| June 6, 2000 |
| 6301545 | Global positioning system tag system
| April 28, 2000 |
| 6301231 | Satellite communication system with variable rate satellite link diversity
| June 2, 1998 |
| 6246360 | Fast satellite-centric analytical algorithm for determining satellite coverage
| July 13, 1999 |
| 6236361 | Precision beacon tracking system
| April 29, 1999 |
| 6229477 | Method and system for determining a position of a communication satellite utilizing two-way ranging
| October 16, 1998 |
| 6226494 | System and method for intermittent satellite communication with a fixed antenna
| September 23, 1997 |
| 6208296 | Method and apparatus for training a receiver on a source
| July 24, 1998 |
| 6201961 | Use of reference phone in point-to-point satellite communication system
| September 13, 1996 |
| 6182927 | Medium earth orbit augmentation of a global positioning system for global navigation
| September 24, 1998 |
| 6147641 | Process for the autonomous reduction of acquisition and tracking thresholds of carriers received in orbit
| November 12, 1997 |
| 6147640 | Communications satellite interference location system
| March 16, 1999 |
| 6144334 | Method and apparatus for calculating access between satellite constellations and ground targets
| February 26, 1998 |
| 6125135 | System and method for demodulating global positioning system signals
| November 10, 1999 |
| 6122596 | Non-geostationary orbit satelite constellation for continuous preferential coverage of northern latitudes
| June 4, 1998 |
| 6112054 | Satellite positioning method in a communication control system
| December 23, 1997 |
| 6108593 | Method and apparatus for estimating attitude sensor bias in a satellite
| July 9, 1997 |
| 6104911 | Communication system with satellite diversity and method of operation thereof
| November 14, 1997 |
| 6091529 | Channel allocation method in connection with data transmissions in the optical frequency range
| June 25, 1997 |
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