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Aiming at the problems of complex structure of the explosion height measurement system, cumbersome array layout, and low accuracy of the explosion height measurement under low signal-to-noise ratio, a three-dimensional six-element acousto-optic array method for the explosion height measurement is discussed. The test principle and structure composition of the method are introduced in detail, the mathematical model of the acousto-optic array structure is established by MATLAB, and the measurement principle and key performance of the structure are deeply analyzed. The simulation verification results show that the structure is suitable for the explosion height measurement within the range of 20~60m. The test should ensure that the time delay estimation error of the explosion sound signal reaching the sensor is less than 20us, and the acousto-optic signal arrival time delay estimation error is absolute. The value is in the range of 4ms; the final range experiment results show that: in the case of low signal-to-noise ratio, the three-dimensional six-element acousto-optic array combined with the improved generalized quadratic cross-correlation algorithm can achieve 5% of the height measurement accuracy within the best measurement height range, which can be applied to the shooting range measurement.