欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
针对合成孔径雷达/地面动目标检测系统中动目标径向速度估计存在模糊的问题,提出一种基于双通道距离频率干涉相位解模糊的方法。该方法通过构造干涉相位与距离频率的关系,利用干涉相位随距离频率变化的斜率关系实现径向速度无模糊估计。该斜率与相位缠绕无关,所以所提方法具有不受相位缠绕影响的优点。为了减小噪声对径向速度估计的影响,利用最小二乘线性拟合方法估计该斜率。此方法能实现杂波背景和多目标情况下的应用。通过仿真和实测数据处理验证了所提方法的有效性。
英文摘要：
The estimated radial velocity can be ambiguous in synthetic aperture radar/ground moving target detection system （SAR/GMTI）. Focus on this problem, a new approach based on dual-channel interferometric phase of range frequency is proposed to resolve ambiguity of radial velocity. Firstly, the linear relationship between interferometric phase and range frequency is obtained. And the slope of interferometric phase respect to range freqN,.~,.~ is utilized to solve ambiguity. Because the phase wrapping has no effect on the slope aforementioned, the propos~.d m~ell,,,d is independent of wrapped phase. And a linear fit method based on least square is used to reduce the effect of noise o,1 the estimation of radial velocity. Meanwhile, the proposed method can resolve the radial velocity ambiguity for multi-target and in clutter environment. Experimental results demonstrate the effectiveness of the proposed method.
同期刊论文项目
同项目期刊论文
Sparse-Aperture ISAR Imaging of Maneuvering Targets with Compensation of Migration Through Range Cel
Transient interference excision and spectrum re reconstruction with partial samples for over-the-hor
Polarimetric Target Decomposition Based on attributed scattering center model for synthetic aperture
Wideswath synthetic aperture radar ground moving targets indication with low data rate based on comp
An ESPRIT-like algorithm for coherent DOA estimation based on data matrix decomposition in MIMO rada
Geometry Information Aided Efficient Radial Velocity Estimation for Moving Targets Imaging and Locat
期刊信息
位置：