DOA Estimation Method of Weak Signal under the Compound Background of Strong Interference and Colored Noise

Table 2

FOC-FPB algorithm basic steps.

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FOC-FPB algorithm

Step 1 and Step 2 are the same as the FOC-ENS algorithm

Step 3: construct a modified projection matrix orthogonal to the interference steering vector

Step 4: preprocess the received data vector to get Y

Step 5: similarly duplicate Step 2 to do the second eigenvalue decomposition to get the noise subspace

Step 6: perform a spectral peak search on and estimate the DOA of the weak signal

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