A semi-physical simulation device for fuze body target echo simulation

Abstract

The invention discloses a semi-physical simulation device for fuze body target echo simulation, which comprises: a non-echo isolation box, a host computer, a synchronous control module, a receiving branch, a channel selection switch, a signal processing module, a transmitting branch, Power module and local oscillator signal generator; among them, the upper computer implements the functions of parameter setting, projectile-eye intersection model establishment and body target echo signal waveform generation, and the receiving branch performs down-conversion processing on the fuze emission signal and samples the intermediate frequency signal to obtain digital The signal is distributed to the digital signal channels corresponding to the number of scattering points; in each digital signal channel, according to the target characteristics of each scattering point, the intermediate frequency signal is digitally delayed, Doppler frequency shifted and amplitude attenuated; then the intermediate frequency signal of each channel is Perform power synthesis and up-conversion processing, and radiate out through the transmitting antenna. The invention can accurately simulate the echo signal of the target under the effect of the near-field object, and has great significance for comprehensively studying the performance of the fuze and reducing the development cost.

Description

technical field [0001] The invention belongs to the technical field of radio frequency simulation and signal processing, in particular to a semi-physical simulation device for simulating the target echo of a fuze body. Background technique [0002] The millimeter-wave fuze works at the end of the projectile-eye intersection. Due to the short distance, the main beam of the antenna often irradiates the target locally. At this time, the target cannot be regarded as a point target, but a volume target. At present, the short-range radar performance detection generally adopts indoor closed-loop point target simulation test and outfield flying around, sliding rail and other methods. Indoor point target simulation test cannot truly reflect the body target effect of the target echo; the field test target is real, but it is affected by the external environment. The impact of the rendezvous is large, the rendezvous speed is generally low, the rendezvous attitude has great limitations, ...

AI Technical Summary

Problems solved by technology

However, since the simulation distance of the radar echo signal simulator is relatively long, the multi-delay processing brought about will also take up relatively large storage resources, and the requirements for large data storage are relatively high.

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