Assessment the moving target´s radiated noise via GSC using frequency invariant beamformer with null broadening

In this paper, we consider the problem of assessment the target´s radiated noise in the presence of target motion using the sensor array. Suppressing the strong interference signal and remaining the characteristics of the target´s radiated noise must be both concerned. We use the gneralised sidelobe canceller (GSC) structure, combining frequency invariant beamformer (FIB) and null broadening technique to deal with the problem. The proposed method uses the FIR fan filters to process in the time domain, so the continuous signal wave can be obtained in the real time. Some computer simulations were carried out to illustrate its performance.