Radar Echo Parameter Estimation Using Sparse Time-Frequency Analysis Method

Abstract:

The echoes of pulse radar from maneuvering targets are amplitude modulation and frequency modulation (AM-FM) signal. At present, the methods of estimating parameters of AM-FM signal are time-frequency analysis method, empirical mode decomposition and empirical wavelet transform based adaptive data analysis methods. This paper takes the idea of intrinsic mode function in guessing the initial phase, and applies the newly developed sparse time-frequency analysis method in AM-FM signal parameter estimation. Simulation results show that the estimating performance of this method in AM-FM signal is good under different SNR and it has low computational cost, and this method is applicable in target acceleration and velocity estimation.

• Periodical: Applied Mechanics and Materials (Volumes 543-547)
• Pages: 2229-2233
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.543-547.2229
• Online since: March 2014
• Authors: Hao Chen*, Jun Hai Guo
• Keywords: Empirical Mode Decomposition (EMD), Instantaneous Freqeuency, Intial Phase, Radar Echo, Redundant Representation, Sparse Representation, Time-Frequency Analysis

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