种基于混合匹配追踪算法的MIMO雷达稀疏成像算法

• Format: Patent
• Language: Chinese
• Published: 26.10.2018
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

本发明属于雷达技术领域和信号处理领域，特别涉及多输入多输出类型系统的应用，具体说是种基于混合匹配追踪算法的MIMO雷达稀疏成像算法。本发明包括：(1)M个发射阵元发射相互正交的相位编码信号，N个接收阵元接收该相位编码信号；(2)每个接收阵元的接收机的匹配滤波器对接收到的相位编码信号进行匹配滤波；(3)对匹配滤波后的信号作傅里叶变换，得到空间谱域回波表达式。本发明所提的HMP算法中的每次索引选择的过程是利用OMP算法实现的，这种操作保证了在基信号选择时的正交性，也就能在字典矩阵具有傅里叶类似性质的时候可以区分相距很近的空间面元；与此同时，在HMP算法中存在的回溯选择操作与SP算法相同。 The invention belongs to the radar technology field and the signal processing field, and relates to application of a multiple input multiple output (MIMO) type system, in particular to an MIMO radar sparse imaging algorithm based on a hybrid matching pursuit algorithm. The MIMO radar sparse imaging algorithm comprises the steps that firstly, M emitting array elements emit orthometric phase-coded signals, and N receiving array elements receive the phase-coded signals; secondly, a matched filter of a receiver of each receiving array element conducts matched filtering on the received phase-coded signals; thirdly, fourier transform is conducted on the matched-filtered signals, and a spatial spectral domain echo expression