Micro-Doppler Curves Extraction of Space Target Based on Modified Synchro-Reassigning Transform and Ridge Segment Linking

The micro-movement feature is recognized as one of the practical features space target recognition in academic circles. separation micro-Doppler curve scattering center key to extraction and parameter estimation, which depends on time–frequency analysis method. existing techniques have low accuracy adaptability when there are overlap noise domain. This paper proposes a algorithm based modified synchro-reassigning transform (MSRT) ridge segment linking. MSRT can eliminate repeated assignment problems, has more accurate frequency estimates than transform, lower computational complexity second-order synchronous compression transforms. re-linking realizes correct connection curves each center. simulation data electromagnetic calculation verify method’s effectiveness.