Signal Separation and Localization Strategies for Large Aperture Acoustic Arrays
US Army Corp of Engineers, Engineering Research and Development Center Vicksburg United States
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Development of signal detection and localization methods for large aperture acoustic arrays in urban environments presents inherent difficulties due in part to interfering coherent signals and low Signal to Noise Ration SNR targets. Continuous wave sources can also be difficult to localize due to the high levels of self-similarity and interference with other continuous wave signals. This paper presents some preliminary approaches under investigation for determining the direction of arrival of continuous sources that are changing in frequency, detecting and localizing low SNR impulses in the presence of coherent noise, and fast efficient mapping of array element delays to direction of arrival using a neural network fitting function.
- Electrical and Electronic Equipment