A new array signal processing method via exploitation of cyclostationarity

The authors consider the problem of direction finding of radar or sonar communication signals based on the data received by sensor arrays. Most communication (modulated) signals exhibit cyclostationarity corresponding to the underlying periodicity which may be carrier frequency or baud rate. By exploiting cyclostationarity, one can significantly improve the signal detection capability, i.e. null out other co-channel interferences and stationary background noise. They propose a new approach for array signal processing via exploitation of cyclostationarity, which is asymptotically exact for either narrow-band or broad-band sources. Moreover, the new technique has implementation advantages over the existing techniques. The simulation results indicate a significantly better performance than that of the prior algorithms.<>