Table 1 The process of proposed algorithm
Input | The number of sources K, antenna sensors M and snapshots L, the received signal matrix Y |
|---|---|
Output | The DOA estimation results \(\hat {\theta _{k}}(k=1,...,K)\) |
Step 1 | Calculate the covariance matrix of received signals \(\hat {\mathbf {R}}\) by (7) |
Step 2 | Estimate the parameters um in the solution of the SDP as shown in (13) |
Step 3 | Acquire the coefficients of annihilated filter ck according to the linear equations in the form of formula (18) |
Step 4 | Find the roots of polynomial gk with coefficients ck |
Step 5 | Determine the final DOA estimation results by solving (19) |