An Improved Estimation Method of Direction of Arrival

This paper presents a new method to estimate the direction of arrival by using k-nearest neighbor (KNN) algorithm. Extracting the phase and amplitude information of the incoming signal between the antenna array elements as the input of the model, using the k-nearest neighbor algorithm to build the direction estimation model, can get a higher estimation accuracy, at the same time, it has a better adaptability for the incoming signal with wide frequency range, different signal-to-noise ratio and large signal range, and has a certain application value. In this paper, the specific implementation steps of the algorithm are given, and the simulation results verify the superiority and feasibility of the method.