For rocket and space technology objects, the urgent problem is to test their protective screens for resistance to the impact of meteoroids and space debris fragments. To conduct such tests in ground conditions, various methods for producing high-velocity metal elements are used. A thin metal plate is capable of acquiring the velocity necessary to simulate a meteoric impact when colliding with an impact element accelerated by a light-gas ballistic installation. The effect of increasing the velocity of shock-wave acceleration of a plate is analyzed when an intermediate layer made of a gradient material is placed between it and the impact element, the acoustic impedance of which monotonically and continuously decreases from the value corresponding to the impact element material to the value corresponding to the plate material. The research was carried out on the basis of numerical modeling within the framework of a plane one-dimensional problem of continuum mechanics. The calculations consider a tungsten impact element and an impact-accelerated aluminum plate. The shock-transmitting layer was assumed to consist of a composition of tungsten and aluminum components with a linear change in their volumetric fractions along the thickness of the layer. The influence of the thickness of the intermediate layer made of a gradient material and the initial velocity of the impact element on the achieved increase in plate velocity has been established.