Abstract:Fragment velocity is a critical parameter for evaluating the destructive effectiveness of warheads. With the advancement of precision damage technologies, the demand for simultaneous measurement of multiple fragments and multi-dimensional parameters poses higher challenges to existing velocity measurement methods. This paper systematically reviews mainstream fragment velocity measurement techniques, including target network, coil target, light screen target, sky screen target, and high-speed photography, from the perspectives of electrical and optical measurement. The fundamental principles, applicable conditions, and technical limitations of each method are analyzed in depth. Based on the latest domestic and international research progress, representative improvement strategies are summarized, covering fragment group resolution, measurement accuracy enhancement, synchronous multi-parameter acquisition, data acquisition system optimization, and target material innovation. Furthermore, the application potential of emerging technologies such as Doppler radar is discussed. Finally, in response to current bottlenecks, including individual fragment association in dense fragment fields, insufficient exploitation of signal waveform features, and susceptibility to environmental interference, future research directions are proposed, emphasizing intelligent, high-precision measurement systems integrating spatiotemporal association algorithms, machine learning, and multi-spectral imaging, thereby providing technical support for damage assessment and fragment field characterization.
