scholarly journals SIGNAL NOISE REDUCTION AND FILTERING

2020 ◽  
Vol 5 (2) ◽  
pp. 29-34
Author(s):  
Tatiana Kelemenová ◽  
Ondrej Benedik ◽  
Ivana Koláriková

The paper deals with noise reduction in signal. Normally measured signal very frequently includes noise and data processing includes the activities for its reduction. The best choice is to reduce the source of noise, but often it is not possible to reduce noise source. Filtering is another activity, which helps us to reduce noise in measured signal. Data processing can be executed only with filtered signal.

2013 ◽  
Vol 8 (9) ◽  
pp. 953-960 ◽  
Author(s):  
ZHAO Zhiqiang ◽  
ZHENG Guowei ◽  
PANG Yu ◽  
SHENG wei ◽  
LIAO cheng ◽  
...  

2013 ◽  
Vol 347-350 ◽  
pp. 332-336
Author(s):  
Feng Ju ◽  
Lin Shi ◽  
Hong Wei Zhang ◽  
Zhuang Zhi Han

The infrared starter is usually used to measure the artillery’s muzzle velocity, but due to the continued firelight near the muzzle produced by the continuous occurrence of the high rate of fire artillery projectile , so that the misjudgment and the Missing are easily produced by the infrared sensor . Continuous wave radar can effectively overcome the impact of the fire, but the detection accuracy of the leaving time is greatly affected echo because of the flame noise. Therefore the noise reduction of echo signal is an important step about the detection of the leaving time. For this problem, a noise reduction algorithm based on the minimum statistical noise estimation is proposed in this paper by the analysis of the echo signal. The noise of continuous muzzle flame is effectively reduced by the algorithm. It is verified correct and feasible by the processing of the measured signal. It lays the foundation for the measure of the artillery’s muzzle velocity and the engineering realization of muzzle velocity measurement.


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