Method of Altitude Measurement in the VHF Radar Based on Spatial Smoothing by Autocorrelation and Cross-Correlation Matrix

Aiming at the multi-path reflection in the VHF radar high-accuracy altitude measurement, a new algorithm based on improved spatial smoothing by autocorrelation and cross-correlation matrix is proposed to achieve decorrelation and super-resolution processing about echo and multi-path signals. It utilizes receipt signals and reinforces signal components in equivalent space smoothing matrix, and then reduces the effect of noise to get the high-resolution of coherent sources. Simulation results demonstrate the validity and merits of the improved spatial smoothing algorithm.