Bearing-Only Passive Location System Based on Multi-Machine Cooperation

Abstract

When the UAV cluster is flying in formation, in order to avoid external interference, the electromagnetic silence should be kept as much as possible and the electromagnetic signal should be emitted less. In order to maintain the formation, this paper uses the method of bearing-only passive location to adjust the position of the UAV, that is, some UAVs in the formation transmit signals and other UAV passively receive signals, from which the direction information is extracted for positioning. To adjust the position of the UAV. In this paper, the formation conditions are determined through investigation, the positioning model is established through the improved triangular positioning principle, and then on the basis of the positioning model, a four-aircraft positioning model is designed, which can realize the initial UAV position deviation slightly. A reasonable UAV position adjustment scheme can be given, and on the basis of circular formation, the formation of conical formation is studied. The results are verified by positioning-calibration algorithm and simulation simulation. after many iterations, the maximum error is close to convergence after the fifth iteration, and the coordinate result of the fifth output is determined to be the ideal coordinate. and the number of movements is relatively small, and the error value is close to zero, which can ensure the accuracy of positioning adjustment.