3 results about "Collision domain" patented technology

The invention discloses a pedestrian collision risk assessment method applied to a signal-free road, and the method comprises the steps: firstly, detecting the relative distance and relative angle information of a pedestrian through a millimeter-wave radar; and then estimating the current speed and course angle of the pedestrian through extended Kalman filtering (EKF). And according to the current speed of the pedestrian, a Markov chain is used to predict the pedestrian trajectory, and the future speed of the pedestrian is predicted. The driving information of the vehicle is detected by a vehicle sensor (IMU and the like). A collision domain is obtained based on predicted future trajectory information of pedestrians and vehicles to judge whether the pedestrians and the vehicles collide, finally collision risk levels are evaluated based on TTC, and different collision avoidance measures are taken according to different risk levels.

The invention relates to the technical field of wireless communication, in particular to a communication network resource allocation method and system for an unmanned aerial vehicle formation, and a medium, and solves the problem that in the prior art, information lag is caused in a high-speed moving scene due to dependence on periodic feedback channel state information of unmanned aerial vehicles. And the wireless channel sharing conflict domain causes inaccuracy of limited network resource allocation and poor real-time performance. The method comprises the following steps: acquiring state information and preset state information of a plurality of unmanned aerial vehicles in an unmanned aerial vehicle formation; determining flight deviation information of each unmanned aerial vehicle in the plurality of unmanned aerial vehicles according to the state information and preset state information; determining the communication demand urgency degree of each unmanned aerial vehicle according to the flight deviation information of the plurality of unmanned aerial vehicles; dividing the plurality of unmanned aerial vehicles into a plurality of communication groups according to the communication demand urgency degrees of the plurality of unmanned aerial vehicles; and allocating corresponding communication network resources to different communication groups according to the division result of the plurality of communication groups.

The present application relates to the technical field of wireless communication, and in particular to a method and system for allocating communication network resources of a UAV formation, and a medium, which solves the technical problems of information lag in high-speed mobile scenarios and inaccurate allocation of limited network resources and poor real-time performance caused by wireless channel sharing conflict domains due to the dependence on periodic feedback of channel state information in the prior art. The method comprises: obtaining state information of a plurality of UAVs in a UAV formation and preset state information; determining flight deviation information of each UAV in the plurality of UAVs according to the state information and the preset state information; determining the communication demand urgency of each UAV according to the flight deviation information of the plurality of UAVs; dividing the plurality of UAVs into a plurality of communication groups according to the communication demand urgency of the plurality of UAVs; and allocating corresponding communication network resources to different communication groups according to the division results of the plurality of communication groups.