This method for computing a conjugated airport navigation graph, from an initial airport navigation graph, is implemented by a computer. This method involves acquiring the initial graph including a plurality of navigation arcs, each including two end nodes, having at least one authorized navigation direction and being identified by its two end nodes. This method further involves determining a conjugated node for each navigation arc and for each authorized navigation direction of the arc, each conjugated node corresponding to a single authorized direction and representing the arc of the initial graph associated with the authorized direction. The conjugated graph is computed by connecting the conjugated nodes as a function of the connections between the arcs of the initial graph and the authorized directions. Two conjugated nodes connect to one another corresponding to two successive arcs of the initial graph and to a same authorized direction.

Autoland systems and processes for landing an aircraft without pilot intervention are described. In implementations, the autoland system includes a memory operable to store one or more modules and at least one processor coupled to the memory. The processor is operable to execute the one or more modules to identify a plurality of potential destinations for an aircraft. The processor can also calculate a merit for each potential destination identified, select a destination based upon the merit; receive terrain data and/or obstacle data, the including terrain characteristic(s) and/or obstacle characteristic(s); and create a route from a current position of the aircraft to an approach fix associated with the destination, the route accounting for the terrain characteristic(s) and/or obstacle characteristic(s). The processor can also cause the aircraft to traverse the route, and cause the aircraft to land at the destination without requiring pilot intervention.

Autoland systems and processes for landing an aircraft without pilot intervention are described. In implementations, the autoland system includes a memory operable to store one or more modules and at least one processor coupled to the memory. The processor is operable to execute the one or more modules to identify a plurality of potential destinations for an aircraft. The processor can also calculate a merit for each potential destination identified, select a destination based upon the merit; receive terrain data and/or obstacle data, the including terrain characteristic(s) and/or obstacle characteristic(s); and create a route from a current position of the aircraft to an approach fix associated with the destination, the route accounting for the terrain characteristic(s) and/or obstacle characteristic(s). The processor can also cause the aircraft to traverse the route, and cause the aircraft to land at the destination without requiring pilot intervention.

A flight display system or method in accordance with this disclosure involves the presentation, on an aircraft, of a “quick preview” notice to airmen (“NOTAM”) display that includes a plurality of stacked flight route portion boxes, each of the plurality of flight route portion boxes pertaining to and being labeled as one of: a departure taxiing portion, a standard instrument departure portion, an en route portion, a standard terminal arrival route portion, an approach portion, and an arrival taxiing portion; each of the plurality of flight route portion boxes graphically displaying flight route symbology pertaining to and labeled as each airport taxiing reference point and/or each aeronautical waypoint that falls within its labeled flight route portion; and wherein at least one of the plurality of flight route portion boxes further graphically displays NOTAM symbology pertaining to at least one of the NOTAMs that are relevant to the flight route.

A flight display system or method in accordance with this disclosure involves the presentation, on an aircraft, of a “quick preview” notice to airmen (“NOTAM”) display that includes a plurality of stacked flight route portion boxes, each of the plurality of flight route portion boxes pertaining to and being labeled as one of: a departure taxiing portion, a standard instrument departure portion, an en route portion, a standard terminal arrival route portion, an approach portion, and an arrival taxiing portion; each of the plurality of flight route portion boxes graphically displaying flight route symbology pertaining to and labeled as each airport taxiing reference point and/or each aeronautical waypoint that falls within its labeled flight route portion; and wherein at least one of the plurality of flight route portion boxes further graphically displays NOTAM symbology pertaining to at least one of the NOTAMs that are relevant to the flight route.

Provided is a navigation system that processes a route plan and data from the surrounding environment to identify a potential threat of undesirable contact anywhere along the route plan. The provided navigation system generates an informative, anticipative display of the vehicle's surrounding environment. When a potential threat is identified, the provided navigation system provides a visual threat alert that enables rerouting the vehicle, thereby averting the potential threat.

A method for displaying stop bar information to an aircrew member of an aircraft includes the steps of capturing a light signature emitted from an area surrounding the aircraft, processing the captured light signature to detect a lighted stop bar, and providing information to the aircrew member regarding the detection of the lighted stop bar.

A system may include a display and a processor communicatively coupled to the display. The processor may be configured to: output, to the display, a view of an airport moving map (AMM); receive aircraft state data and airport surface data; at least based on the current position of the aircraft and at least one factor, obtain commonly used taxi route data from a data structure, the data structure including taxi route data, the taxi route data including information of commonly used taxi routes for the airport, wherein the commonly used taxi route data includes information of a commonly used taxi route for the aircraft on the airport surface; based at least on the commonly used taxi route data, the aircraft state data, and the airport surface data, generate taxi routing guidance content; and output, to the display, the taxi routing guidance content.

Tracking aircraft in and near a ramp area is described herein. One method includes receiving camera image data of an aircraft while the aircraft is approaching or in the ramp area, receiving LIDAR/Radar sensor data of an aircraft while the aircraft is approaching or in the ramp area, merging the camera image data and the LIDAR/Radar sensor data into a merged data set, and wherein the merged data set includes at least one of: data for determining the position and orientation of the aircraft relative to the position and orientation of the ramp area, data for determining speed of the aircraft, data for determining direction of the aircraft, data for determining proximity of the aircraft to a particular object within the ramp area, and data for forming a three dimensional virtual model of at least a portion of the aircraft from the merged data.

A device for checking the consistency of a positioning includes: a transmitter, a receiver, a time measuring unit, a distance determining module and a check module. The transmitter emits at least one signal, and the receiver receives at least four response signals from at least four different response elements. A response element receives the at least one signal and, upon receipt, emits a response signal. The time measuring unit determines, for each response signal, a total delay time from a transmission time of the signal and a reception time of the respective signal. The distance determination module determines a distance to the respective response element based on each total delay time, and the check module performs a consistency check of a determination of a position based on distances to the different response elements. With the device, erroneous distance values may be detected in ground-based positioning systems.