Method and device for determining effective Doppler bandwidth of fuze receiver

Abstract

The invention discloses a method and device for determining the effective Doppler bandwidth of a fuze receiver. The method comprises the steps of dividing a target into multiple target scattering surface elements after geometric modeling is conducted on the target, calculating the Doppler shift of each target scattering surface element and the echo power generated by each target scattering surface element under the missile target encounter condition, drawing a Doppler frequency spectrum diagram of the target according to the calculated Doppler shift and echo power of each target scattering surface element, and cutting out a spectral line range within which echo power is larger than set threshold power from the drawn Doppler frequency spectrum diagram and determining the effective Doppler bandwidth of the fuze receiver according to the cut-out spectral line range. By the adoption of the method and device, estimation of the effective Doppler bandwidth of the fuze receiver can be achieved, so that the fuze receiver can be designed based on the estimated effective Doppler bandwidth of the fuze receiver during fuze slideway testing, and then fuze slideway testing is facilitated.

Description

Technical field [0001] The invention relates to fuze technology, in particular to a method and system for determining the effective Doppler bandwidth of a fuze receiver. Background technique [0002] Radio fuze, commonly known as radar fuze, is a kind of physical field that uses radio waves to sense the changes in physical field characteristics when a target appears to obtain detonation information and determine the timing of detonation. It is widely used in both tactical and strategic missiles. [0003] Radio fuzes are classified according to their working systems, including Doppler, FM, pulse, phase, and coded radio fuzes. Among them, the Doppler radio fuze is the earliest used radio fuze. The Doppler radio fuze uses the Doppler effect of electromagnetic waves when the projectile and target (projectile and target) approach. Moreover, the Doppler radio fuze is still widely used in countries around the world due to its simple structure, small size and low cost. Doppler radio fu...

AI Technical Summary

Problems solved by technology

At present, technicians usually design the effective Doppler bandwidth of the fuze receiver based on experience, design the fuze receiver according to the designed effective Doppler bandwidth, and then conduct the fuze slide test; however, the effective Doppler bandwidth designed based on experience The bandwidth is often inaccurate. If the relevant parameters for determining the optimal starting point and starting area of ​​the fuze cannot be measured during the fuze rail test, technicians need to redesign the fuze receiver several times.

Determining the best starting point and starting area of ​​the fuze in this way requires a large number of fuze rail tests, which is time-consuming and labor-intensive

Images