A method and a device for monitoring a region (R) in which a carrier (100) is located, which device comprises a display unit displaying a polar plot (10) having a center symbolizing the current position of the carrier (100) and in which there is placed a first moving-body symbol (1, 2, 3) representing the current position of the moving body (101, 102, 103); the polar plot (10) being surrounded by an annular band (20) of width (l) representing a predetermined monitoring duration and containing second moving-body symbols (1′, 2′, 3′) representative of successive angle readings of the path of said moving body (101, 102, 103).

A low flying unmanned vehicle is disclosed that may be able to determine whether a collision is possible and may take evasive action in response to the possible collision. The vehicle may wirelessly communicate and may use a standard protocol such that a variety of additional objects may be taken into account when determining the possible collision risk.

A low flying unmanned vehicle is disclosed that may be able to determine whether a collision is possible and may take evasive action in response to the possible collision. The vehicle may wirelessly communicate and may use a standard protocol such that a variety of additional objects may be taken into account when determining the possible collision risk.

Various avionics systems may benefit from appropriate integration of distance measurement equipment, traffic collision avoidance systems, and transponders, with the distance measurement equipment using a dedicated antenna. A system can include a transponder processor. The system can also include a top antenna receiver configured to connect to a top antenna. The transponder processor can be configured to communicate using the top antenna. The system can also include a bottom antenna receiver configured to connect to a first bottom antenna, wherein the transponder processor is configured to communicate using the first bottom antenna. The system can further include a distance measure equipment processor integrated with the transponder processor and configured to measure distance using a second bottom antenna.

Various avionics systems may benefit from appropriate integration of distance measurement equipment, traffic collision avoidance systems, and transponders, with the distance measurement equipment using a dedicated antenna. A system can include a transponder processor. The system can also include a top antenna receiver configured to connect to a top antenna. The transponder processor can be configured to communicate using the top antenna. The system can also include a bottom antenna receiver configured to connect to a first bottom antenna, wherein the transponder processor is configured to communicate using the first bottom antenna. The system can further include a distance measure equipment processor integrated with the transponder processor and configured to measure distance using a second bottom antenna.

A method for detecting conflicts in the II/SI identification code of radars nearby a secondary mode-S radar, includes at least: a first step wherein the radar detects unsolicited unsynchronized replies, i.e. fruits, in a region of extended radar coverage; a second step wherein the radar detects a conflict in II/SI code by analyzing geographic regions of radar coverage common to the radar and to at least one nearby radar, a conflict being detected if the radar: detects, in the region of extended coverage, the presence of fruits that have as source the nearby radar; observes the absence of fruits caused by the nearby radar in that region of radar coverage of the radar which does not overlap with the region of radar coverage of the nearby radar; the region of overlap between the radar coverage of the radar and the radar coverage of the nearby radar forming a region of conflict in II/SI code.

A method for detecting conflicts in the II/SI identification code of radars nearby a secondary mode-S radar, includes at least: a first step wherein the radar detects unsolicited unsynchronized replies, i.e. fruits, in a region of extended radar coverage; a second step wherein the radar detects a conflict in II/SI code by analyzing geographic regions of radar coverage common to the radar and to at least one nearby radar, a conflict being detected if the radar: detects, in the region of extended coverage, the presence of fruits that have as source the nearby radar; observes the absence of fruits caused by the nearby radar in that region of radar coverage of the radar which does not overlap with the region of radar coverage of the nearby radar; the region of overlap between the radar coverage of the radar and the radar coverage of the nearby radar forming a region of conflict in II/SI code.

Systems and methods for airspace management. One embodiment of an aerial vehicle, includes a first sensor for detecting a lateral field of view of the aerial vehicle and a vehicle computing device. The vehicle computing device may include a memory component and a processor. The memory component may store logic that, when executed by the processor, causes the aerial vehicle to calculate a detection boundary for the aerial vehicle to maintain a well clear requirement, wherein the detection boundary is based on instantaneous trajectory, planned future trajectory, and a capability of the aerial vehicle and utilize the capability of the aerial vehicle and data from the first sensor to maintain the vehicle within detection boundary. In some embodiments the logic may cause the vehicle to provide an instruction to maintain the aerial vehicle within the detection boundary.

Aspects of the invention provide improvements to analyze data collected by a radar system. One of the systems includes a phased array module configured to transmit a sequence of pulses to an environment according to a pre-determined pattern. A data analysis system constructs an image based on returned signals from a single point received by the phased array module, and determines one or more characteristics of a target object in the environment based on the image constructed from the returned signals from the single point.

Disclosed is a method and apparatus for generating a radar signal, in which performance of radar detection is ensured while increasing a spectrum efficiency in a radar network. The method comprises generating a set of frequency-modulation waveforms, generating an orthogonal code set, generating a set of coded frequency-modulation waveforms through element operation between the set of frequency-modulation waveforms and the orthogonal code set, calculating an objective function for the set of frequency-modulation waveforms with regard to a different set of coded frequency-modulation waveforms and previous sets of coded frequency-modulation waveforms, and selecting a current polyphase code set as an optimized polyphase code set when a result of current calculation is better or smaller than a result of previous iteration, and performing phase perturbation by replacing an element randomly selected in the current polyphase code set selected as the optimized polyphase code set with another admissible-phase element.