Method for estimating object angle with high-angle analysis using large-scale MIMO array antenna

A method for estimating object angle with high-angle analysis using large-scale MIMO array antenna, which receives an input signal matrix through an array antenna, and the input signal matrix is a transmission signal or reflection signal of at least one target object, the method comprising following steps:

• step S1:
• inputting an input signal matrix to a first calculation model, and inputting a plurality of angle related pursuit matrices for comparison;
• when the plurality of pursuit matrices satisfy conditions of the first calculation model, a target object amount and a rough object angle with respect to a location of a target object are obtained;
• step S2:
• inputting the target object amount and the input signal matrix to a second calculation model for carrying out a singular value decomposition, and obtaining a noise matrix;
• S3:
• obtaining an iteration angle range from the rough object angle in S1;
• and
• S4:
• inputting the plurality of pursuit matrices corresponding to the iteration angle range and the noise matrix to a third calculation model for an angle range iteration, thereby obtaining an accurate object angle.