Joint estimation method and system for signal source number and direction of arrival of coherent distribution source

The invention provides a joint estimation method and system for the signal source number and the direction of arrival of a coherent distribution source, and belongs to the field of array signal processing. The objective of the invention is to solve the problem that low complexity and high precision cannot be ensured at the same time by using spectrum peak search when the number of information sources is unknown and the method is in an impact noise environment in the prior art. According to the method, the clustering thought and the quantum optimization theory are introduced into a Gizza pyramid construction mechanism to design a multi-peak quantum Gizza pyramid construction mechanism, a quantum revolving door is designed and simulated by utilizing a clustering link and a quantum calculation theory, an evolution strategy of the quantum revolving door is improved, and the convergence speed and the global convergence performance of the mechanism are improved; constructing a low-order covariance matrix based on L