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| Number | Title | Issue Date |
| 8134491 | Systems and methods for terrain and obstacle detection by weather radar A method is provided for controlling an aircraft-mounted radar system configured to project radar beams and to receive radar returns relating to the projected radar beams. The method includes providing at least one output to the radar system that causes the radar sy... | 03/13/2012 |
| 8098192 | System for distinguishing among radar returns using information from a database A terrain awareness system includes a processor for receiving radar returns and providing terrain and/or obstacle alerts or warnings in response to the radar returns. The processor receives information from a database and the information is used to select the radar ... | 01/17/2012 |
| 7889117 | Less than full aperture high resolution phase process for terrain elevation estimation A method of determining an angle with a beam to terrain for a terrain avoidance system includes receiving first data associated with first returns associated with a first portion of an antenna. The method further includes receiving second data associated with second... | 02/15/2011 |
| 7859449 | System and method for a terrain database and/or position validation An aircraft weather radar system can be used with a terrain avoidance system. The aircraft weather radar system is coupled to an antenna. A processor receives radar returns received by the antenna. The processor determines terrain elevation estimates for use with th... | 12/28/2010 |
| 7633430 | Terrain awareness system with false alert suppression A terrain awareness and warning system includes electronics for receiving radar returns and providing terrain and/or obstacle alerts or warnings in response to the radar returns. The electronics receives information from a database and the information is utilized to... | 12/15/2009 |
| 7479920 | Obstacle and terrain avoidance sensor A method and apparatus for terrain mapping and/or obstacle detection for aircraft, including (a) transmitting a non-scanning beam that illuminates the terrain and/or obstacles; (b) receiving a Doppler shifted signal that is Doppler frequency shifted by an amount dep... | 01/20/2009 |
| 7400951 | Method and device for automatic guidance of an aircraft, for a flight at least in part at low altitude A method of automatically guiding an aircraft for flight at low altitude determines an LLF (low level flight) trajectory section for following terrain to be overflown by the aircraft. The LLF trajectory section takes account of predictions of the aircraft's mass and... | 07/15/2008 |
| 7395156 | System and method for geo-registration with global positioning and inertial navigation A position estimation system including a first arrangement for providing an image with a known target in a known reference frame. A second arrangement correlates the image with a stored image. The correlation is used to compute an error with respect to a position es... | 07/01/2008 |
| 7363121 | System, method and apparatus for searching geographic area using prioritized spatial order A spatial data search method, system and apparatus for identifying particular data of significance around a reference vector through the spatial data. The method involves determining a reference vector within a spatial region for which spatial data exists, loading a... | 04/22/2008 |
| 7321812 | Method of terrain following A method of designing a terrain-following flight profile for an air vehicle. The method includes providing a terrain profile, and transforming the terrain profile into the terrain-following flight profile according to one or more performance parameter of the air veh... | 01/22/2008 |
| 7280897 | Intervisibility determination A system and method for efficient intervisibility determination. The intervisibility determination method of the present invention provides a multiple threat processing capability within a specified area of terrain using a common database. Computation is simplified ... | 10/09/2007 |
| 7268724 | Reduced-error monopulse processor This monopulse processor provides target position information having an RMS error which is less than that of a conventional monopulse processor. A Σ±jΔ vs. Σ processor is modified to provide a position output signal equal to the smaller in absolute magnitude of ... | 09/11/2007 |
| 7262713 | System and method for a safe depiction of terrain, airport and other dimensional data on a perspective flight display with limited bandwidth of data presentation The present invention is directed to a system and method for a safe flight display through increasing situation awareness by an optimal presentation, given limited capacity of the system. The system may determine which terrain area needs a detail representation and ... | 08/28/2007 |
| 7239265 | Method for evaluating and controlling a radar installation A method is disclosed for evaluating the terrain surrounding a radar site. The method comprises to calculate the radar horizon around a radar site from stored terrain elevation information. The information obtained can be used for controlling the scanning profile of... | 07/03/2007 |
| 7205520 | Portable air defense ground based launch detection system A ground based launch detection system consisting of a sensor grid of electro-optical sensors for detecting the launch of a threat missile which targets commercial aircraft in proximity to a commercial airport or airfield. The electro-optical sensors are configured ... | 04/17/2007 |
| 7154392 | Wide-area intruder detection and tracking network A method is provided for at least one of detecting and tracking an object within a wide-area. The method including: deploying three or more sensors within the wide-area, each of the sensors having one or more polarized radio frequency waveguides; transmitting polari... | 12/26/2006 |
| 7130449 | Method and system for ground imaging A system and method for determining the slope of a ground imaged area. The system includes a camera, a memory, and a processor. The camera generates a first and a second image of an area of ground from an aircraft. The memory stores bi-directional characteristic inf... | 10/31/2006 |
| 7057549 | Method and apparatus for predictive altitude display Embodiments of the invention provide a method and apparatus for indicating aircraft height relative to an obstruction in a terrain awareness warning system. The method includes receiving data indicative of geographic features of an obstruction, lateral distance of t... | 06/06/2006 |
| 7009553 | Device and method for alert and density altitude features in a transponder A transponder having a subsystem for providing an altitude alert function signifying a deviation from a set altitude is described. The subsystem includes an input for receiving an altitude deviation limit associated with the set altitude, a CPU receiving updated alt... | 03/07/2006 |
| 6999023 | Method and apparatus for predictive altitude display Embodiments of the invention provide a method and apparatus for indicating aircraft height relative to an obstruction in a terrain awareness warning system. The method includes receiving data indicative of geographic features of an obstruction, lateral distance of t... | 02/14/2006 |
| 6983206 | Ground operations and imminent landing runway selection A method for locating aircraft with respect to airport runways and taxiways, generating and annunciating situational awareness advisories as a function of aircraft state parameters relative to a determination of the aircraft location. ... | 01/03/2006 |
| 6980152 | Externally cued aircraft warning and defense Methods, computer-readable media, and systems for externally cued aircraft warning and defense are disclosed. A surveillance system may include a sensor field or array and may include a processor system that processes signals including acoustic signals received by t... | 12/27/2005 |
| 6980892 | Avionics system and method for providing altitude alerts during final landing approach An avionics system and method is employed for alerting pilots of low premature descent during final landing approach. The method involves determining Final Approach Flight Safety Altitudes for a plurality of runways, identifying which runway an aircraft is likely to... | 12/27/2005 |
| 6965342 | Method for recognizing and identifying objects A method for recognizing and identifying objects by means of several sensors, particularly using imaging sensors (L, W, V) in the infrared and/or visible wavelength range and radar devices (R) which are based on the generation of a synthetic aperture. According to t... | 11/15/2005 |
| 6950056 | Methods and apparatus for determination of a filter center frequency A method for calculating a center frequency and a bandwidth for a radar doppler filter is herein described. The center frequency and bandwidth are calculated to provide radar performance over varying terrain and aircraft altitude, pitch, and roll. The method include... | 09/27/2005 |
| 6897803 | Radar altimeter with forward ranging capabilities A method for incorporating a forward ranging feature into a radar altimeter is described. The method comprises positioning an antenna of the altimeter such that a side lobe of a radar signal radiates from the antenna in a forward direction and processing a radar ret... | 05/24/2005 |
| 6892117 | Method of measuring point-blank passing time or the like of airplane A terrain clearance measuring radio wave being emitted from an airplane is received, and changes in electric field intensity of the radio wave is input and recorded to a computer, whereby the time of occurrence of a sharply appearing peak value of the changes permit... | 05/10/2005 |
| 6885334 | Methods and systems for detecting forward obstacles Methods and apparatus for detecting obstacles in the flight path of an air vehicle are described. The air vehicle utilizes a radar altimeter incorporating a forward looking antenna and an electronic digital elevation map to provide precision terrain aided navigation... | 04/26/2005 |
| 6879886 | Flight guidance system providing perspective flight guidance symbology A flight guidance system providing perspective flight guidance symbology using positioning and terrain information provides increased pilot situational awareness of an aircraft. The guidance system uses a positioning system and a detailed mapping system to provide a... | 04/12/2005 |
| 6864830 | Device and method for alert and density altitude features in a transponder A transponder having a subsystem for providing an altitude alert function signifying a deviation from a set altitude is described. The subsystem includes an input for receiving an altitude deviation limit associated with the set altitude, a CPU receiving updated alt... | 03/08/2005 |
| 6771207 | Establishing radar coverage, blockage, and clutter region maps for radar product data based on terrain elevation data Radar coverage maps having blockage, coverage and clutter features available for ease of interpretation are provided using terrain data to establish such features in data sets. The data sets provide a basis for the modified display. Multiple tilts of the radar scan ... | 08/03/2004 |
| 6744401 | Methods and apparatus for radar data processing A method for testing a radar system utilizing flight test radar data is described. The method includes time synchronizing measured radar data with a GPS based time marker, storing at least a portion of the time synchronized radar data, storing the GPS data, processi... | 06/01/2004 |
| 6710723 | Terrain data retrieval system A terrain-awareness system (TAS) provides LOOK-AHEAD/LOOK-DOWN as well as LOOK-UP terrain advisory and warning indications to the pilot of an aircraft of a hazardous flight condition. The TAS includes an airport data base as well as a terrain data base that is struc... | 03/23/2004 |
| 6683556 | Method and apparatus for predictive altitude display Embodiments of the invention provide a method and apparatus for indicating aircraft height relative to an obstruction in a terrain awareness warning system. The method includes receiving data indicative of geographic features of an obstruction, lateral di... | 01/27/2004 |
| 6680691 | Methods and apparatus for accurate phase detection A phase processor is disclosed which is configured to receive processed radar return data from a left radar channel, a right radar channel, and an ambiguous radar channel. The phase processor comprises a plurality of phase detectors each with an input and... | 01/20/2004 |
| 6606034 | Terrain awareness system A terrain awareness system (TAS) provides LOOK-AHEAD/LOOK-DOWN as well as LOOK-UP terrain advisory and warning indications to the pilot of an aircraft of a hazardous flight condition. The TAS includes an airport data base as well as a terrain data base th... | 08/12/2003 |
| 6593875 | Site-specific doppler navigation system for back-up and verification of GPS A system and method for identifying the position of an airborne platform on a flight path includes at least three radar transceivers that are directed along respective beam paths to generate return signals. Each of the return signals respectively indicate... | 07/15/2003 |
| 6538581 | Apparatus for indicating air traffic and terrain collision threat to an aircraft Includes means for monitoring the position and behavior of air traffic in the vicinity of the aircraft and generating a warning or avoidance signal for air traffic predicted to be on a collision course. The apparatus also includes means for monitoring the... | 03/25/2003 |
| 6529821 | Route planner with area avoidance capability A method for establishing a path from a launch point to a destination point that can include multiple way points while avoiding landmass areas. Launch points and destination points can lie outside or inside the particular landmass areas. The method includ... | 03/04/2003 |
| 6525674 | Conditional hazard alerting display A conditional TAWS algorithm, system and method for providing advanced warnings of potential hazard situations which could result from changes in heading and vertical speed.... | 02/25/2003 |
