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Multicomponent LFM Signal Detection and Parameters Estimation Based on Radon Ambiguity Transform(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2004年04期
Page:
409-413
Research Field:
Publishing date:

Info

Title:
Multicomponent LFM Signal Detection and Parameters Estimation Based on Radon Ambiguity Transform
Author(s):
LIU Ai fangZHU Xiao huaLU Jin huiLIU Zhong
School of Electronic Engineering and Optoelectronic Technology, NUST, Nanjing 210094,China
Keywords:
Radon-Ambiguity transform linear frequency-modulated signal parameters est ima-t ion
PACS:
TN957.51
DOI:
-
Abstract:
Basic principle of LFM( linear frequency-modulated) signal detection and parameters est imation using Radon-Ambiguity t ransform ( RAT) w as analyzed, and the result s indicate that the init ial f requency of LFM signal can not be est imated by using the RAT direct ly. To re solve this problem, an improved scheme combining RAT w ith dechirp technique w as proposed, w hich could est imate all parameters of LFM sig nal at the cost of lit t le addit ional computation load. By applying the CLEAN technique to the improved scheme, a novel RAT-based algo rithm was presented, w hich could detect weak LFM components embedded in st rong LFM components. The computer simulat ion results prove it s effect iveness.

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Last Update: 2013-03-11