Low-Elevation Estimation Method for Meter-Wave Array Radar in an Interference Environment

Target low-elevation estimation is of great significance in the field of radar detection. However, as the current electromagnetic environment grows increasingly complex, interference significantly degrade the performance of radar angle estimation. To address this issue, this paper proposes a low-elevation estimation method for meter-wave array radar in interference environments: firstly, the multipath signals of both target and interference are fully considered and a refined model is constructed; secondly, based on the minimum variance distortionless response, interference samples are combined with the target’s composite steering vector to derive a weight vector that integrates both interference suppression and elevation estimation functions; finally, the target elevation is estimated using the idea of maximum likelihood estimation. Simulation results demonstrate the effectiveness of the proposed method.