Abstract:The shock wave measurement system must solve the problem of dynamic testing error caused by the effective bandwidth of the sensor, in which the measured signal is difficult to meet or cover when measuring the blast shock signal.Therefore, the dynamic calibration of the sensor is presented to obtain the experimental samples by using a shock tube, the QR decomposition and improved particle swarm optimization (PSO) algorithm are used to quickly estimate the order and coefficient of the dynamic compensation filter. Due to the limited word length effect of the digital filter, this paper chooses the appropriate the quantization bits of the output data and coefficients to satisfy the stability of the test system.In order to realize real-time online correction, a fully parallel single feedback dynamic compensation structure based on FPGA is designed. The experiment results show that the compensation filter can meets the needs of the actual test, and can significantly improve the dynamic response characteristics of the sensor.