摘要
提出了一种改进的Radon-Wigner变换方法应用于多目标分辨与参数估计。文中首先分析了基于Radon-Wigner变换的参数估计原理,针对WVD平面上的优化搜索问题,提出了变尺度两级搜索算法,以相对较小的计算量,提高了参数估计的精度。对于多分量信号的分辨,应用频域信号分离技术,有效抑制了强信号对弱信号的影响。仿真结果表明:上述方法减小了算法的计算量,提高了多目标分辨性能。
In this paper, a modified Radon - Wigner transform algorithm with two - step searching and CLEAN method is proposed, which is used in radar multi - target resolving and parameter estimation. The accuracy of parameter estimation can be improved and the computation cost can be reduced by using the proposed method. The experimental results show that the small targets submerged by the large ones can be detected effectively, and better accuracy and less computation can be obtained by using the modified RWT than ordinary Radon - Wigner transform.
出处
《电光与控制》
北大核心
2006年第3期11-14,28,共5页
Electronics Optics & Control
基金
国家重大基础研究项目
