The traditional algorithm performing direction of arrival (DOA) estimation under the background of strong interference and colored noise has the problems of low estimation accuracy and small measurement targets. Based on the construction of a fourth-order cumulant (FOC) matrix to suppress colored noise. this paper adopts the extended noise subspace (ENS) algorithm and the fixed projec... https://poolsproductscanadas.shop/product-category/hayward-sp1099s-spa-skimmer-parts/