Search

Your search keyword '"Su, Weimin"' showing total 2 results
Start Over Author "Su, Weimin" Topic doppler effect Journal digital signal processing
2 results on '"Su, Weimin"'

1. Ground moving target motion parameter estimation using Radon modified Lv's distribution

Author

Gu Hong, Wenchao Yu, and Su Weimin

Subjects
Synthetic aperture radar, Computer science, 0211 other engineering and technologies, chemistry.chemical_element, Radon, 02 engineering and technology, symbols.namesake, Acceleration, Artificial Intelligence, 0202 electrical engineering, electronic engineering, information engineering, Electrical and Electronic Engineering, 021101 geological & geomatics engineering, Radon transform, Applied Mathematics, 020206 networking & telecommunications, Geodesy, Jerk, Distribution (mathematics), Computational Theory and Mathematics, chemistry, Signal Processing, symbols, Computer Vision and Pattern Recognition, Statistics, Probability and Uncertainty, Doppler effect, Algorithm, Energy (signal processing)
Abstract

With a long synthetic aperture time, the energy of the ground moving target will be defocused due to the effect of range migration (RM) and Doppler frequency migration (DFM). This paper combines Radon transform and the modified Lv's distribution (MLVD), then proposes RMLVD to eliminate RM and estimate the motion parameters of target. It is validated that the proposed method can estimate the equivalent slant acceleration and jerk simultaneously. Besides, the proposed method can realize coherent integration with a low computational load and eliminate the Doppler ambiguity effect. The simulation results show that the proposed method has an excellent detection performance in the multiple targets or low signal-to-noise ratio (SNR) environment.

Published
2017

2. Fast implementation of ground maneuvering target focusing.

Author

Yu, Wenchao, Su, Weimin, Gu, Hong, Yang, Jianchao, and Lu, Xingyu

Subjects
*FAST Fourier transforms, *DOPPLER effect, *SYNTHETIC aperture radar, *FOURIER transforms, *DISCRETE Fourier transforms, *RADON transforms
Abstract

Ground maneuvering target detection is a hot topic in the applications of synthetic aperture radar (SAR), whereas its focusing performance is severely deteriorated by range migration and Doppler frequency migration during a long integration time. This paper proposes a novel method to image the target and estimate its parameters via performing two independent 2-dimensional (2-D) searches after a parameter separation operation. In order to improve the search speed, we set the limited search ranges and propose local mapping sparse Fourier transform (LMSFT) to replace fast Fourier transform (FFT). Compared with the traditional algorithms, the proposed method can realize fast coherent integration of multiple maneuvering targets via compensating the high-order range migration and Doppler frequency migration. In addition, the proposed method is stable under noise. Several simulation results have validated the effectiveness of the proposed method. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results