caponsampler.py 文件源码

def compSpecSample(self, angle):
        """
        Computes the spectrum in a sample with Capon beamformer.

        MUST compute the covariance matrix (call `compCov()`) before calling
        this function.

        Parameters
        ----------
        angle : float
            Direction-of-arrival (DOA) angle in range [0, pi).

        Returns
        -------
        p : float
            The response of Capon beamformer.
        """
        a = self.sarr.steer(angle)
        p = 1. / (a.T.conj().dot(inv(self.r).dot(a)))

        # Discard imaginary part
        return p.real