Initialization: | , , , . | Select a group of space-time steering vectors | (for side-looking ULA) | , | where , | , and , | Compute calibrated space-time steering vectors | Estimate using the methods in [19], | where columns of are all equivalent to , | , | (In RD version, ), | Compute | , | , | , | . | (In RD version, instead of ), | For each snapshot | , | Compute | , | , | Estimate , | , | (In RD version, instead of , instead of ) | Compute | Adopt the Lanczos algorithm to to compute , | (In RD version, instead of ), | Filter weights computation | , | Or: | . | (In RD version, instead of ) |
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