In order to solve the problem that the high computational burden of the multiple signal classification algorithm of non-circular signal (NC-MUSIC) in direction-of-arrival (DOA) estimation. a novel computationally efficient DOA estimation algorithm based on subspace rotation technique was proposed. Firstly. the partitioning of noise subspace matrix and the subspace rotation technique (... https://unitedssports.shop/product-category/fan-shop-ncaa-hats/