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secondary diagonal 【數學】次對角線。

secondary education

The algorithms estimate the doa of the broadband distributed source fron the secondary diagonal elements of the covariance matrices generated from every frequency domain of the received broadband signals , thus avoiding unwrapping of phases 該類算法首先將陣列接收的寬帶信號變換到頻率域,然后對于每個頻率形成陣列接收信號協方差陣,最后由該協方差陣的次對角線元素估計寬帶分布源的到達角,其主要特點是避免了相位展開。