Composite Vector And Scalar Hydrophone for Underwater Acoustic

      Composite Vector And Scalar Hydrophone for Underwater Acoustic

Measurement content

1. Vector channel

Working frequency band

The working frequency band of the vector channel is 40Hz-2.5kHz.

Receiving sensitivity

Measure the receiving sensitivity of each channel, of which the 1kHz should be higher than -200dB.

Directivity

The maximum dipole sensitivity asymmetry Kr≤ max3dB; orthogonality deviation ≤10°, measurement frequency point 2.5kHz.

2. Scalar channel

Working frequency band

The working frequency band of the scalar channel is 20Hz～40kHz.

Receiving sensitivity

The receiving sensitivity within the working frequency band should be higher than -205dB, and the fluctuation within the octave should not exceed 2dB.

Directivity

The horizontal directivity fluctuation should not exceed 2dB, and the -3dB vertical directivity opening angle is greater than 180°, and the measurement frequency point is 10dB.

Hydrostatic pressure test

After the hydrophone is subjected to 2MPa/1h, OMPa/1h, 2MPa/1h.OMPa/1h hydrostatic pressure test, the junction resistance of each channel should be greater than 100Ω.

Measurement data

Vector channel

1. Receiving sensitivity:

2.Directivity

Scalar channel

1. Receiving sensitivity

2.horizontal directivity

1. vertical directivity

Hydrostatic pressure test

After the hydrophone was subjected to 2MPa/1h, OMPa/1h, 2MPa/1h, and OMPa/1h hydrostatic pressure tests, the insulation resistance of each channel was 200M.

Measurement results

The performance of the hydrophone meets the index requirements.