Introduction - If you have any usage issues, please Google them yourself
In this paper, a fast search-free method for direction-of-arrival (DOA) estimation
with coprime arrays was proposed. It is based on the use of methods that operate
on the uniform linear subarrays of the coprime array and that enjoy many
processing advantages. We rst estimate the DOAs for each uniform linear
subarray separately and then combine the estimates the subarrays. For
combining the estimates, we propose a method that projects the estimated
point in the two-dimensional plane onto one-dimensional line segments that
correspond to the entire angular domain. By doing so, we avoid the search
step and consequently, we greatly reduce the computational complexity of
the method. We demonstrate the performance of the method with computer
simulations and compare it with that of the FD-root MUSIC method.