Semi-physical simulation device for fuze body object echo simulation

Abstract

The invention discloses a semi-physical simulation device for fuze body object echo simulation. The device comprises an echo-free shielded box, an upper computer, a synchronous control module, a receiving branch circuit, a channel selector switch, a signal processing module, an emission branch circuit, a power source module and a local oscillator signal generator; the upper computer is used for fulfilling a parameter setting function, a projectile object crossing model establishing function and a body object echo signal waveform generation function; the receiving branch circuit is used for subjecting fuze emission signals to down conversion processing operation and obtaining digital signals by sampling intermediate frequency signals, and the digital signals are distributed to digital signal channels which correspond to scattering points in terms of quantity; the intermediate frequency signals in each digital signal channel are subjected to numerical control delay operation, Doppler frequency shift operation and amplitude attenuation operation according to all scattering point object characteristics; intermediate frequency signals in each channel are subjected to power synthesizing operation and up-conversion operation before being radiated outward via transmitting antennas. The semi-physical simulation device can be used for accurately simulating object echo signals under near field body object effects, and the semi-physical simulation device is of great significance for comprehensive research on fuze performance and reduction of 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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