When estimating parameters of multiple target echoes with strong ground clutter, the precision of the long vector multiple signal classification (LV-MUSIC) decreases, and the noise subspace projection matrix in tensor MUSIC (T-MUSIC) cannot be calculated because of the deficiency of the channel. Since then, a transform domain based tensor of MUSIC algorithm (T²-MUSIC) is proposed. The algorithm makes use of the tensor structure to separate signals in time domain and estimates parameters in each doppler channel. Compared with LV-MUSIC and T-MUSIC, the proposed algorithm can ensure resolvable target number on multiple targets condition with the loss of degree of freedom, while achieves a higher parameter estimation precision. The simulations exhibit the enhanced resolution ability of T²-MUSIC and the higher precision under the condition of low signal-to-noise ratio.