A waveguide device includes: an electrically conductive member having an electrically conductive surface; a waveguide member having an electrically-conductive waveguide face of a stripe shape opposing the electrically conductive surface, the waveguide member extending along the electrically conductive surface; and an artificial magnetic conductor extending on both sides of the waveguide member. The waveguide member has a bend at which the direction that the waveguide member extends changes. A waveguide which is defined by the electrically conductive surface, the waveguide face, and the artificial magnetic conductor includes a gap enlargement where a gap between the electrically conductive surface and the waveguide face is locally increased. In a perspective view along a direction perpendicular to the electrically conductive surface, at least a portion of the bend has an overlap with the gap enlargement.

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a multi-purpose radar. The multi-purpose radar system includes one or more subarrays of electronically steered transmit/receive elements, a digital signal processing subsystem that includes a plurality of digital processing elements and a memory subsystem that includes one or more memories, an analog-to-digital subsystem configured to receive the analog output of the one or more subarrays and to store a digital representation of the analog output into the memory subsystem, and a control subsystem configured to direct the digital signal processing subsystem to perform a plurality of different processing algorithms on the data stored in the memory subsystem.

A vehicle and method of operating a vehicle in a vehicle traffic control system includes receiving a grid projection from a grid generator, generating a navigation output, transmitting the navigation output to the vehicle traffic control system, receiving the vehicle traffic control plan from the vehicle traffic control system, and operating the vehicle.

A waveguide device includes: an electrically conductive member having an electrically conductive surface; a waveguide member having an electrically-conductive waveguide face of a stripe shape opposing the electrically conductive surface, the waveguide member extending along the electrically conductive surface; and an artificial magnetic conductor extending on both sides of the waveguide member. The waveguide member has a bend at which the direction that the waveguide member extends changes. A waveguide which is defined by the electrically conductive surface, the waveguide face, and the artificial magnetic conductor includes a gap enlargement where a gap between the electrically conductive surface and the waveguide face is locally increased. In a perspective view along a direction perpendicular to the electrically conductive surface, at least a portion of the bend has an overlap with the gap enlargement.

A system of automatically documenting a plurality of aircraft touchdown events detected by analyzing sensory data received from a plurality of sensors, comprising one or more interfaces for connecting to a plurality of sensors deployed to monitor at least part of a runway in an airport, the sensors comprising one or more image sensors, audio sensors and/or vibration sensors, and one or more processors coupled to the one or more interfaces. The processor(s) is adapted to receive sensory data from said plurality of sensors, the sensory data comprising image data, audio data and/or vibration data, identify a timing and a location of a landing touchdown event of an aircraft on the runway by analyzing the sensory data and classify the landing touchdown event as a normal landing touchdown event or an abnormal landing touchdown event based on the analysis.

To provide a foreign-object system which uses a plurality of radars, and which can detect a foreign object that is present on a runway or the like and which can suppress interference between radars. A foreign-object detection system including a first radar 11, a second radar 21 connected to the first radar via a network 33, and a signal source 31 for transmitting a synchronization signal to the first radar and the second radar via the network, said foreign-object detection system wherein interference generated due to a radar signal outputted from the second radar being reflected by a reflective body and inputted to the first radar is prevented by controlling a delay time that corresponds to |.sub.1i.sub.2j|, where .sub.1i is the time taken for the synchronization signal to be transmitted from the signal source to the first radar, and .sub.2j is the time taken for the synchronization signal to be transmitted from the signal source to the second radar.

A vehicle and method of operating a vehicle in a vehicle traffic control system includes receiving a grid projection from a grid generator, generating a navigation output, transmitting the navigation output to the vehicle traffic control system, receiving the vehicle traffic control plan from the vehicle traffic control system, and operating the vehicle.

In accordance with disclosed embodiments, there are provided systems, methods, and apparatuses for implementing a smart beacon monitoring system supported by a processor and a memory to execute such functionality. For instance, in accordance with one embodiment there is an Internet of Things (IOT) beacon, which includes: a light source; a Remote Transmission Unit (RTU) to communicate with a remote centralized communication station over a network; a plurality of sensors, each to collect telemetry data at the IOT beacon; in which the RTU is to transmit the collected telemetry data from the plurality of sensors to the remote centralized communication station over the network for analysis; in which the remote centralized communication station is to identify a current or predicted failure condition at the IOT beacon based on the analysis of the collected telemetry data from the plurality of sensors; and in which the remote centralized communication station is to initiate one or more alerts to have service personnel perform maintenance to correct the identified current or predicted failure condition at the IOT beacon. Other related embodiments are disclosed.

Disclosed here are system, apparatus, article of manufacture, method and/or computer program product embodiments for track association. An embodiment operates by receiving a first set of track identification data from a first tracking system. The first set of track identification data is associated with a global track identifier (GID). The first set of track identification data associated with the GID is broadcasted to the first tracking system and a second tracking system. A second set of track identification data is received from the second tracking system. The second set of track identification data identifies any tracks of the second tracking system that match the first set of track identification data. The GID is associated with the second set of track identification data.

A device comprising a radar for taking at least one radar image of the terrain in front of the aircraft in a zone containing at least one characteristic pattern, the position of the characteristic pattern being known, an image processing unit for detecting, on the radar image taken by the radar, a characteristic symbol representing the characteristic pattern, a computation unit for determining, from at least the position of the characteristic symbol in the image and from characteristics of the radar image acquisition, relative position information illustrating the position of the aircraft in relation to the characteristic pattern, and for determining the position of the aircraft, from the relative position information and from the known position of the characteristic pattern, and a unit for transmitting at least the position of the aircraft to at least one user system, for example a landing aiding system or an SVS display.