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- W2356870454 abstract "The problem of estimating the chirp signal immersed in noise is a fundamental one in many diverse fields. In this paper, a new algorithm for enhancing the chirp signal based on the rotation of time frequency plane is proposed. The algorithm works in the following procedure: first, calculate the short time Fourier transform of the noisy signal; this is followed by rotating the time frequency plane with rotation angle yielded from the estimated instantaneous frequency; then, on the basis of singular value decomposition, use a low effective rank to split signal and noise subspaces; finally, rotate the signal subspace back and perform the inverse short time Fourier transform. Simulation results show that the proposed algorithm has a good property of amplitude preservation." @default.
- W2356870454 created "2016-06-24" @default.
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- W2356870454 date "1999-01-01" @default.
- W2356870454 modified "2023-09-27" @default.
- W2356870454 title "Enhancing chirp signal based on rotation of time frequency plane" @default.
- W2356870454 hasPublicationYear "1999" @default.
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