Method for Estimating the Target Distribution Area in AUV Call Search Based on a Rayleigh-uniform Distribution

In the process of autonomous undersea vehicle(AUV) call search, the distribution area of the target is an important basis for guiding the platform for AUV path planning. Error distributions produced from the initial position and motion parameters of the target of information acquisition cause the position distribution function of the target to exhibit the characteristics of a non-normal, nonuniform distribution at any moment. However, the existing methods are often considerably simple or even unreasonable for describing the problem, resulting in phenomena that are inconsistent with reality. To solve the problem of estimating the target distribution area in an AUV call search, based on the estimation model of the target initial position distribution area, a Rayleigh-uniform joint estimation model is established according to the error distribution rules, such as target velocity and navigation. The simulation results show that the proposed method is more reasonable and practical than the traditional two-dimensional normal distribution method, providing a more accurate estimation of the target distribution area and facilitating convenient numerical analysis and engineering applications