Recursive Estimation For Multiple Signal Direction Finding
J.H. Clements, J.T. Lo · 2005
A new algorithm is presented which recursively computes the the maximum likelihood (ML) estimates of the arrival directions of multiple signals observed by a passive ar- ray of sensors. This approach, which is capable of handling both coherent and noncoherent signals, can process individual snapshots or batches of snapshots as they become available from the sensor array. Simulation results show that after a brief transient time period, this recursive algorithm achieves the same estimation accuracy as do the less efficient batch processing algorithms.