Height Measurement Method for Meter Wave Radar in Composite Terrain Scenarios
A super-resolution height measurement problem for a typical"flat+slope"composite terrain scene is discussed.According to the shielding situation of the array reflection path echo,the echo scene is divided into three situations:no shielding,full shielding,and partial shielding.The traditional maxi-mum likelihood super-resolution height measurement method is not effective for partial shielding scene.This article proposes an adaptive maximum likelihood height measurement method to solve this problem.Firstly,by segmenting the upper and lower sub arrays,parallel echo models are constructed,and the ap-proximate position of the reflection point masking boundary is estimated;Then,based on the amplitude difference between the array channel data and model,the precise position of the masking boundary is determined;Finally,a new echo model is constructed to estimate the target height.The simulation results show that this method can estimate the target's height effectively in this typical composite ter-rain scenes.
万方数据
维普
