Method for measuring mutual radiation impedance of transducer array in non-anechoic tank and system thereof

Abstract

The invention provides a method for measuring mutual radiation impedance of a transducer array in a non-anechoic tank and a system thereof. the method comprises the following steps: Step 101, resonant frequency of each transducer in the air and resonant frequency of each transducer in water are measured; Step 102, Q distribution points are selected in the non-anechoic tank and are used for distributing a transducer pair to be measured; Step 103, the transducer pair to be measured is distributed on some point in the distribution points, resistance and reactance of a first transducer under various working conditions are obtained when the first transducer and a second transducer operate at same-phase resonant frequency of the first transducer in the air and in water and at reversed-phase frequencies of the first transducer in the air and in water; Step 104, the above Step 103 is repeated until resistance and reactance measurement of the above transducer pair to be measured at all Q distribution points are completed; and Step 105, mutual radiation resistance and mutual radiation impedance of the transducers to be measured at each point are obtained so as to obtain Q mutual radiation resistances and mutual radiation impedances, and mean value of the Q mutual radiation resistances or mutual radiation impedances is calculated to be respectively used as mutual radiation resistance and mutual radiation impedance of the final measurement.

Description

technical field [0001] The present invention proposes a method for measuring the mutual radiation impedance of transducer arrays in a non-anechoic pool. The mutual radiation impedance between the energy devices. The invention also provides a system for measuring the mutual radiation impedance of transducer arrays in a non-anechoic pool. Background technique [0002] The ideal measurement of the mutual radiation impedance of the transducer array should be carried out in a free field. Generally speaking, the environment of field tests such as lakes and seas is very close to the free field. However, due to the cumbersome preparations for the field test, complex site conditions, difficult implementation, long test period and high cost. The mutual radiation impedance value of the transducer array is an important factor affecting the performance of the transducer array, and it needs to be measured during the research and development of the array. However, if such a measurement i...

AI Technical Summary

Problems solved by technology

However, due to the cumbersome preparations for the field test, complex site conditions, difficult implementation, long test period and high cost

The mutual radiation impedance value of the transducer array is an important factor affecting the performance of the transducer array, and it needs to be measured during the research and development of the array. However, if such a measurement is performed in an external field, the cost is too high, so in the existing technology The measurement of the mutual radiation impedance of the transducer array is usually done in the pool

[0003] The anechoic pool can provide an environment similar to the free field, but for those transducer arrays whose operating frequency is not within the anechoic range, the anechoic pool still cannot provide a satisfactory measurement environment. In this case, the anechoic pool degenerates into An ordinary non-anechoic pool

In addition, the cost of the anechoic pool is extremely high, not all underwater acoustic research institutions are able to afford it, and most of them use non-anechoic pools

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