DocumentCode :
2581065
Title :
Weak radar signal detection based on wavelet transform
Author :
Ehara, Naoki ; Sasase, Iwao ; Mori, Shinsaku
Author_Institution :
Dept. of Electr. Eng., Keio Univ., Yokohama, Japan
fYear :
1994
fDate :
19-22 Apr 1994
Abstract :
Weak signal detection is a basic and important problem in radar systems. The detectable range of a radar is determined by the radar equation. This equation shows that the performance of a radar is improved by increasing the receiver output SNR. For the purpose of improving the SNR, the process called “integration of pulses” has been used. We propose new methods based on the wavelet transform for the improvement of the SNR. The wavelet transform is a tool for time-frequency domain signal analysis and is sensitive to the transient signals. By computer simulations, we show that the receiver output SNR after the wavelet transform is applied becomes about 8 dB greater than that of the original signals. This value corresponds to a 60 percent improvement of the radar detectable range
Keywords :
radar detection; radar receivers; radar signal processing; time-frequency analysis; wavelet transforms; computer simulations; integration of pulses; radar detectable range; radar equation; radar performance; radar systems; receiver output SNR; time-frequency domain signal analysis; transient signals; wavelet transform; weak radar signal detection; Computer simulation; Equations; Radar detection; Signal analysis; Signal detection; Time frequency analysis; Transient analysis; Wavelet analysis; Wavelet domain; Wavelet transforms;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
ISSN :
1520-6149
Print_ISBN :
0-7803-1775-0
Type :
conf
DOI :
10.1109/ICASSP.1994.389642
Filename :
389642
Link To Document :
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