For the problem that the shock-wave propagation characteristics have significant differences with ground explosion under airburst conditions, and traditional shock-wave test devices are difficult to be applicable to in-air deployment and multi-direction shock-wave measurement, a lightweight airburst shock-wave test system was designed and developed. This system took the radially polarized spherical piezoelectric sensor as the core sensitive unit, and used its geometrical symmetric structure to realize omnidirectional response measurement of shock-wave overpressure signals. A storage-type test system composed of signal-conditioning circuit, high-speed analog-to-digital conversion module, spatial-information acquisition module and local storage unit was constructed, realizing automatic triggering, high-speed acquisition and local recording of shock-wave signals. The system sampling rate was 1 MSPS, the analog-to-digital conversion resolution was 12 bit, and through compact structure design and lightweight packaging, the whole device could meet the test requirements of in-air suspended deployment. Through suspended outdoor explosion tests, the system performance was verified, under different explosion heights and azimuth-angle conditions, the test system could stably acquire complete shock-wave overpressure time-history curves. The test results show that the shock-wave overpressure peak values recorded by each measuring point are distributed concentratedly, the relative standard deviation is 4.8%, and the system has good dynamic response ability and measurement consistency. The developed test system can stably acquire shock-wave pressure time-history data under in-air environment, and can provide an effective test means for airburst shock-wave propagation law research and high-altitude damage-effect evaluation.
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