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| Number | Title | Issue Date |
| 8041509 | System and method of addressing nonlinear relative motion for collision probability using parallelepipeds Collision probability analysis for spherical objects exhibiting linear relative motion is accomplished by combining covariances and physical object dimensions at the point of closest approach. The resulting covariance ellipsoid and hardbody are projected onto the pl... | 10/18/2011 |
| 7423583 | Method for refining state estimates of a global positioning system (GPS) receiver based upon sequential GPS carrier phase measurements Sequential GPS Doppler carrier phase count measurements are used for precision sequential determination of position and velocity of a GPS receiver, such as for orbit determination and geolocation, with minimum throughput time. Real-time orbit determination and geolo... | 09/09/2008 |
| 7383153 | Method for determining maximum conjunction probability of rectangular-shaped objects Maximum conjunction probability calculations are refined by addressing rectangular object shapes, even though their orientation may not be known. Object dimensions and relative miss distance, coupled with the aspect ratio of the projected combined covariance, are us... | 06/03/2008 |
| 7224311 | System and method for visualization of attitude and attitude/position dependent data A system and method for visualization of attitude dependent data is disclosed. An attitude sphere is defined around an object of interest located at the center. Grid points are defined on the surface of the attitude sphere to represent directions. An attitude depend... | 05/29/2007 |
| 7050002 | GPS carrier phase measurement representation and method of use Sequential GPS Doppler carrier phase count measurements are used for precision sequential determination of position and velocity of a GPS receiver, such as for orbit determination and geolocation, with minimum throughput time. Real-time orbit determination and geolo... | 05/23/2006 |
| 6937968 | Method and apparatus for sequentially profiling and solving problems in space mission analysis A system and method for orbital planning allows iterative calculations of orbital parameters to be accomplished in an automated way with one parameter solution serving as input to the next parameter's calculation. A software program employs a graphical user interfac... | 08/30/2005 |
| 6850875 | Method and apparatus for determining obscuration of sensors that are mounted on a spacecraft The field of view of a sensor mounted on a satellite (or other spacecraft) is obscured by various objects, such as celestial bodies and the satellite's own solar panels. A method is disclosed for visualizing and quantifying, with respect to time, variations in the p... | 02/01/2005 |
