The invention discloses an interference array meter-
wave radar under non-
Gaussian noise and a steady height measurement method and application. the height measurement method is based on a covariant matrix of a fractional low-order moment of an interference array, and employs the co-variant matrix to inhibit a non-
Gaussian distribution scattering component in a complex multipath reflection
signal of a low-angle target. Due to the fact that the co-variant matrix reserves the manifold structure of the interference array, decoherence of target direct
waves and
specular reflection waves can be achieved through the co-variant matrix and the space
smoothing technology, and then steady low-angle target height measurement is achieved through the double-scale unitary ESPRIT
algorithm. The
pitch aperture of the
radar is expanded through the interference array structure, the degree of freedom of a baseline is increased, meanwhile, non-
Gaussian scattering components in complex multipath signals are suppressed through fractional low-order moments, and the low-angle measurement performance of the meter-
wave radar is improved.