Method for influencing an acoustic source, in particular of a submerged submarine, and submarine
OwnerGunther Laukieninventor
Life of this patent
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Abstract
A method and a submarine are disclosed influencing an acoustic source emitting an acoustig signal having a first frequency spectrum with at least one intensity maximum. In order to make detection of the frequency spectrum by means of passive acoustic locating systems more difficult, the first frequency spectrum is stochastically modulated by influencing the acoustic source.
Claims31
Submarine with sound-emitting mechanical elements (21, 22, 23) and means to camouflage emitted acoustic signals (S), characterized in that means are provided to influence said mechanical elements (21, 22, 23) in such a way that a first frequency spectrum (33) emitted by the mechanical elements (21, 22, 23) is modulated.
A method of influencing an acoustic source emitting an acoustic signal with a first frequency spectrum having at least one first intensity maximum, said method comprising the step of influencing said acoustic source by stochastically modulating said first frequency spectrum.
A method of influencing an acoustic source, said acoustic source emitting an acoustic signal with a first frequency spectrum having at least one first intensity maximum, said method comprising the step of influencing said acoustic source by modulating said first frequency spectrum, said modulating step comprising the step of modulating an operating motion of mechanical elements forming said acoustic source through modulation of an amplitude of motion of macroscopically moving mechanical elements.
A method of influencing an acoustic source, said acoustic source emitting an acoustic signal with a first frequency spectrum having at least one first intensity maximum, said method comprising the step of influencing said acoustic source by modulating said first frequency spectrum, said modulating step comprising the step of modulating an operating motion of mechanical elements forming said acoustic source through modulation of an operating motion of propulsion elements of a submerged submarine for camouflaging said submarine.
A method of influencing an acoustic source emitting an acoustic signal with a first frequency spectrum having at least one first intensity maximum, said method comprising the step of influencing said acoustic source by modulating said first frequency spectrum, wherein said modulating step includes the step of modulating a natural vibrational frequency of naturally vibrating resonant mechanical elements comprising said acoustic source.
A method of influencing an acoustic source situated within an environment of extraneous sound and emitting an acoustic signal with a first frequency spectrum having at least one first intensity maximum, said method comprising the steps of:
- influencing said acoustic source by modulating said first frequency spectrum;
- recording a second frequency spectrum of said extraneous sound;
- determining second intensity maxima of said second frequency spectrum;
- and
- displacing said first frequency spectrum with its first intensity maximum to a frequency of one of said second intensity maxima of said second frequency spectrum, through influencing said acoustic source.
A submarine, comprising:
- sound-emitting mechanical elements;
- and
- camouflaging means for camouflaging acoustic signals emitted by said mechanical elements, said camouflaging means comprising influencing means for modulating a first frequency spectrum emitted by said mechanical elements.
Dependencies are inferred from the claim text.