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Piezohannas
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.
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.
