Study on the Signal Detection Algorithm of Weak Laser Radar Target Based on Wavelet Transform

2010 ◽  
Author(s):  
Jianhua Sun ◽  
Pen Ma ◽  
Ning Zheng ◽  
Jinfa Shi
Keyword(s):  
Wavelet Transform ◽  
Signal Detection ◽  
Detection Algorithm ◽  
Laser Radar ◽  
Radar Target

Signal Detection Algorithm using Discrete Wavelet Transform and Radon Transform

2004 ◽  
Vol 50 (5) ◽  
pp. 353-360 ◽  
Author(s):  
S J Thiruvengadam ◽  
P Chinnadurai ◽  
M Thirumalai Kumar ◽  
V Abhaikumar
Keyword(s):  
Wavelet Transform ◽  
Signal Detection ◽  
Discrete Wavelet Transform ◽  
Radon Transform ◽  
Detection Algorithm ◽  
Discrete Wavelet

An automatic seismic signal detection algorithm based on the Walsh transform

1981 ◽  
Vol 71 (4) ◽  
pp. 1351-1360
Author(s):  
Tom Goforth ◽  
Eugene Herrin
Keyword(s):  
Signal Detection ◽  
Real Time ◽  
Seismic Signal ◽  
Detection Algorithm ◽  
Machine Language ◽  
Walsh Transform ◽  
Time Signal ◽  
Data Systems ◽  
Detection Capability ◽  
Short Period

abstract An automatic seismic signal detection algorithm based on the Walsh transform has been developed for short-period data sampled at 20 samples/sec. Since the amplitude of Walsh function is either +1 or −1, the Walsh transform can be accomplished in a computer with a series of shifts and fixed-point additions. The savings in computation time makes it possible to compute the Walsh transform and to perform prewhitening and band-pass filtering in the Walsh domain with a microcomputer for use in real-time signal detection. The algorithm was initially programmed in FORTRAN on a Raytheon Data Systems 500 minicomputer. Tests utilizing seismic data recorded in Dallas, Albuquerque, and Norway indicate that the algorithm has a detection capability comparable to a human analyst. Programming of the detection algorithm in machine language on a Z80 microprocessor-based computer has been accomplished; run time on the microcomputer is approximately 110 real time. The detection capability of the Z80 version of the algorithm is not degraded relative to the FORTRAN version.

Measured Turbulence And Speckle Effects In Laser Radar Target Returns

1983 ◽  
Author(s):  
David M. Papurt ◽  
Jeffrey H. Shapiro ◽  
Sun T. Lau
Keyword(s):  
Laser Radar ◽  
Radar Target
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