THE DME AS AN APPROXIMATION TO THE WIGNER TRANSFORM

1984 ◽  
Vol 45 (C6) ◽  
pp. C6-199-C6-204
Author(s):  
J. Martorell ◽  
E. Moya de Guerra
Keyword(s):  
Wigner Transform

Nonlinear Dynamics of Partially Incoherent Optical Waves Based on the Wigner Transform Method

2001 ◽  
Vol T98 (1) ◽  
pp. 12 ◽  
Author(s):  
M. Lisak ◽  
B. Hall ◽  
D. Anderson ◽  
R. Fedele ◽  
V. E. Semenov ◽  
...  
Keyword(s):  
Nonlinear Dynamics ◽  
Wigner Transform ◽  
Transform Method ◽  
Optical Waves

A Direction of Arrival Estimation Method for Wideband LFM Signals Based on RWT and ESPRIT Algorithm

2014 ◽  
Vol 1044-1045 ◽  
pp. 976-981
Author(s):  
Jian Zhong Xu ◽  
Fu Qiang Yu ◽  
Ping Guang Duan ◽  
Shu Hua Li
Keyword(s):  
Frequency Modulation ◽  
Estimation Method ◽  
Direction Of Arrival ◽  
Wigner Transform ◽  
Signal Parameter ◽  
Time Frequency ◽  
Cross Terms ◽  
Stationary Signals ◽  
Simulation Results ◽  
Esprit Algorithm

In this paper, we proposed a new algorithm to estimate the direction of arrival (DOA) for wideband linear frequency modulation (LFM) signals, using Radon-Wigner transform (RWT) and estimation of signal parameter via rotational invariance techniques (ESPRIT). To eliminate the cross-terms, we first utilize the RWT with its excellent time-frequency concentration performance. Then, through peak searching, the number of targets, the initial interference and the frequency modulation slope are estimated. On the this base, the array signals are reconstructed. Finally, we adopt the ESPRIT algorithm to estimate the DOA of the array signals. The simulation results show that the proposed algorithm can estimate the DOA of non-stationary signals with high precision.

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