# Sparsity-Based Two-Dimensional DOA Estimation for Coprime Array: From Sum–Difference Coarray Viewpoint

> Research article (IEEE Transactions on Signal Processing, 2017) · cited 166× · AI/ML

**Wikidata**: [openalex:W2742426150](https://www.wikidata.org/wiki/openalex:W2742426150)  
**Source**: https://4ort.xyz/entity/sparsity-based-two-dimensional-doa-estimation-for-coprime-array-from-sumdifference-coarray-viewpoint