Abstract
The ways of overcoming the problems caused by the specific asymmetry of the side lobes of the channels formed at the output of cylindrical antenna arrays with a horizontal generatrix, which are relevant for underwater robots, are considered. An algorithmic solution is proposed based on the use of adaptive signal power limitation for solving detection-direction finding problems in combination with non-adaptive reception or the diagonal loading Capon algorithm for assessing the spectral and correlation characteristics of strong signals.
Highlights
The current moment can be characterized as the moment of intensive development of hydroacoustic devices for underwater robots, i.e. autonomous underwater unmanned vehicles (AUUV)
The desire to maximize the aperture makes the use of cylindrical antennas with a horizontal generatrix many times larger than the diameter most relevant in AUUVs
Azimuth deviation of signal responses when scanning on different elevation angle (EA) can lead to false detection and direction finding errors due to signal responses deviation in the scans when the EA of scan does not match the actual signal arrival EA, especially in the case of multipath signals
Summary
The current moment can be characterized as the moment of intensive development of hydroacoustic devices for underwater robots, i.e. autonomous underwater unmanned vehicles (AUUV). These tools are used to solve a wide range of tasks [1], including maritime safety, positioning [2], communications [3], environmental sensing, etc. In the case of an AUUV, the adaptive suppression of hydroacoustic interferences should provide:.
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