Unmanned aerial vehicle passive positioning technology based on cross-location and target splitting

Abstract In order to ensure that the UAV fleet can maintain maximum electromagnetic silence and minimise emission of signals during formation flight, a theoretical method pure azimuth passive positioning be used optimise their relative positions. This paper analyses different situations UAVs presents best solution for in flight corresponding The first establishes polar coordinates based on known orientation information. It uses sine theorem triangles plane joint cubic equations obtain final result. then triangulation verify accuracy specific location by solving least squares problem. Using idea cross-location, two intersecting trajectories are constructed intersection is improve position UAV. Due bias signal sent UAV, this target segmentation split into multiple sub-targets implement them separately. done avoid need more send while adjusting position, making Drones evenly spaced around circumference.