Measurement method for the key terminal ballistic parameters of the supersonic projectile using the sparse distribution detector array

The article proposes a measurement method using the sparse distribution detector array, and it can accurately measure the key terminal ballistic parameters (including hitting coordinates, flight velocity, firing angle and firing rate, etc.) of the supersonic projectile. Firstly, we describe the shock wave of the supersonic projectile and its propagation characteristics. What is more, the detection principle of the system is presented. Secondly, its measurement model is established through combining with the relevant structural parameters and the shock wave propagation velocity in the detection area. Next, the system is developed, and it mainly consists of several pairs of laser emitters and their receivers, two support frames, and a signal conditioning circuit. Finally, the systematic errors of the above parameters are analyzed through numerical simulation, respectively. The results show that the measurement method can meet the requirements for testing the terminal ballistic parameters of the supersonic projectile. Compared with the previous methods, it has the advantages such as better uniformity detection sensitivity, high accuracy, lower cost, easy installation and adjustment.