Multifunctional SAR complex electromagnetic environment simulator

Abstract

A multifunctional SAR complex electromagnetic environment simulator comprises an antenna and microwave subsystem, a baseband interference information generation and modulation unit, and a control display and model unit. The antenna and microwave subsystem acquires SAR emission signals, performs power regulation and multi-stage down-conversion, and outputs the signals to the baseband interference information generation and modulation unit; meanwhile, the antenna and microwave subsystem performs multi-stage up-conversion and power control on medium-frequency interference signals output by the baseband interference information generation and modulation unit and outputs to an SAR. The baseband interference information generation and modulation unit calculates baseband modulation information with multiple interference types in real time according to the control commands and parameters received, and modulates the baseband modulation information and the medium-frequency radar signals into interference signals required. According to simulation requirements, the control display and model unit calls an interference model to generate interference parameters and transmits the parameters to the baseband interference information generation and modulation unit; meanwhile, the control display and model unit monitors operating status of the whole simulator and records parameters.

Description

technical field [0001] The invention belongs to the communication field and relates to a SAR electromagnetic environment simulation device. Background technique [0002] Synthetic Aperture Radar (abbreviated as SAR) has the characteristics of all-day, all-weather detection and imaging, strong perspective, high resolution, and good anti-interference ability. These characteristics make SAR widely used in the aerospace field. In actual use, SAR may face interference from the complex electromagnetic environment in the space environment, so it is necessary to test and assess its electromagnetic environment adaptability before the technical status of SAR products is finalized. [0003] At present, for the assessment of the adaptability of SAR to complex electromagnetic environments, it is mainly through the modes of flying in the field of aircraft and actual flight of aerospace vehicles, and the test cost is high and expensive. There is no relevant report on the research on the i...

AI Technical Summary

Problems solved by technology

In the domestic technical literature, "Design and Research of Radar Jamming Simulator" published in "Basics of National Defense Technology" in November 2010 explained the composition and basic working principle of a radar jamming simulator from the basic principle, but its description is relatively Simple, and does not fully cover the complex electromagnetic environment for the working mode and characteristics of SAR

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