Mutual interference signal processing for active sonar

2011 ◽  
Vol 130 (4) ◽  
pp. 2410-2410
Author(s):  
Stephen D. Unruh ◽  
Jason M. Aughenbaugh ◽  
James M. Gelb
Keyword(s):  
Signal Processing ◽  
Mutual Interference ◽  
Interference Signal ◽  
Active Sonar

Fast white light interference signal processing method based on effective signal extraction

2019 ◽  
Vol 48 (10) ◽  
pp. 1013002
Author(s):  
马 龙 Ma Long ◽  
贾 竣 Jia Jun ◽  
裴 昕 Pei Xin ◽  
胡艳敏 Hu Yanmin ◽  
周 航 Zhou Hang ◽  
...  
Keyword(s):  
Signal Processing ◽  
White Light ◽  
Processing Method ◽  
Signal Extraction ◽  
Interference Signal ◽  
Light Interference ◽  
Signal Processing Method ◽  
White Light Interference ◽  
Effective Signal

Research of Active Detection Technology Using Vector Array on Small Platform

2011 ◽  
Vol 128-129 ◽  
pp. 682-685
Author(s):  
Xue Li Sheng ◽  
Jia Lu ◽  
Chun Yan Sun ◽  
Ji Dan Mei ◽  
Long Xiang Guo ◽  
...  
Keyword(s):  
Signal Processing ◽  
Acoustic Pressure ◽  
Doa Estimation ◽  
Vibration Velocity ◽  
Active Sonar ◽  
Detection Technology ◽  
Simulation Results ◽  
Active Detection ◽  
Small Platform ◽  
Better Than

Active sonar on small platform which uses vector array is selected in this paper as research object, the methods of signal and DOA estimation and the performance of these methods are discussed. Vector array comprehensive copy correlator and vector array comprehensive adaptive copy correlator which use acoustic pressure and vibration velocity at the same time are proposed in this paper. The performance of signal processing and the precision of DOA estimation can be improved by these methods. Simulation results present that the performance of the proposed methods are better than conventional copy correlator. In addition, vector array comprehensive adaptive copy correlator has higher gain than vector array comprehensive copy correlator in multi-path channel.

scholarly journals Issues of developing receiving equipment for the passive method of induced polarization

2021 ◽  
Vol 2094 (2) ◽  
pp. 022080
Author(s):  
P V Belolipetskii ◽  
G Y Shajdurov ◽  
V S Potylitsyn ◽  
V V Romanov
Keyword(s):  
Signal Processing ◽  
Field Work ◽  
Induced Polarization ◽  
Interference Signal ◽  
Digital Converter ◽  
Post Processing ◽  
Passive Method ◽  
Channel Interference ◽  
Input Gain ◽  
Analogue To Digital

Abstract The article deals with the design of receiving equipment for the passive method of induced polarization (IP). It is shown that the best option for recording this kind of signals is a circuit with an input analogue part and amplification of 50-100 times, as well as an input gain of at least 3 MΩ and a digital part based on a modern twenty-four-bit analogue-to-digital converter (ADC). In this case, it is preferable to use one ADC per channel without multiplexing, for better suppression of inter-channel interference. Signal processing is performed using modern microcontrollers based on the Cortex M4 core, and then the data is transmitted via Bluetooth to a laptop or tablet, where visualization and post-processing is carried out. Thus, the proposed scheme for the implementation of the receiving equipment meets all the requirements for the receiving equipment for the passive IP method, and can be introduced into the practice of field work.

scholarly journals Optical Interference Signal Processing in Precision Dimension Measurement

Automation ◽  
10.5772/50529 ◽  
2012 ◽  
Author(s):  
Haijiang Hu ◽  
Fengdeng Zhang ◽  
Juju Hu ◽  
Yinghua Ji
Keyword(s):  
Signal Processing ◽  
Interference Signal ◽  
Optical Interference ◽  
Dimension Measurement
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