초록 ▼

A torpedo seeker head for providing guidance information in three orthogonal axes is provided according to the invention. The torpedo seeker head includes three directional hydrophones, with each directional hydrophone capable of receiving an acoustic signal and generating a signal output therefrom.

A torpedo seeker head for providing guidance information in three orthogonal axes is provided according to the invention. The torpedo seeker head includes three directional hydrophones, with each directional hydrophone capable of receiving an acoustic signal and generating a signal output therefrom. The three directional hydrophones are aligned with their response axes oriented substantially orthogonally, with any two directional hydrophones and respective axes defining a plane. An omni-directional hydrophone is also provided which measures a phase of a received acoustic signal. The signal outputs from the any two directional hydrophones, in conjunction with the phase from the omni-directional hydrophone are used to calculate a look angle to a target in a plane defined by the any two hydrophones, with the measurement being substantially independent of frequency. The three directional hydrophones yield look angles in three dimensions. The torpedo seeker head utilizes this information to provide guidance information to the torpedo.

대표청구항 ▼

[ What is claimed is:] [1.] A torpedo seeker head for providing guidance information to a torpedo which is substantially independent of the frequency of a received acoustic signal, comprising:a first, second and third directional hydrophone, each said first, second and third directional hydrophone b

[ What is claimed is:] [1.] A torpedo seeker head for providing guidance information to a torpedo which is substantially independent of the frequency of a received acoustic signal, comprising:a first, second and third directional hydrophone, each said first, second and third directional hydrophone being capable of receiving an acoustic signal and generating a signal output therefrom, said first, second and third directional hydrophones being aligned substantially orthogonally, with any two directional hydrophones and their respective axes defining a plane;an omni-directional hydrophone for measuring a phase of a received acoustic signal;means for calculating look angles to a target in three dimensions from said three directional hydrophones and said omni-directional hydrophone; andmeans for guiding said torpedo utilizing said calculated look angles.