Abstract: Sparse arrays designed based on fourth-order difference co-array (DCA) can achieve significantly higher uniform degrees-of-freedom (uDOFs). However, most existing fourth-order sparse arrays ...

Abstract: Recently, numerous design schemes for high-order sparse linear arrays (SLAs) have been introduced for underdetermined direction-of-arrival (DOA) estimation based on high-order cumulants, ...

PREFIX SUM ARRAY: A prefix sum array is an array where each element at index i is the sum of all elements from the start (index 0) to index i of the original array.

push() and pop(), these two methods append elements to an array and remove an element from the an array respectively. Both of these methods work at the end of the array, where the index is largest.

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