Multifunctional SAR complex electromagnetic environment simulator

An environmental simulation device and complex electromagnetic technology, applied in the field of communication, can solve the problems of SAR working mode and feature coverage, and achieve the effects of flexible use, multiple interference patterns, and reduced size and cost

Active Publication Date: 2014-03-26
BEIJING INST OF ASTRONAUTICAL SYST ENG +1
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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 princi...

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  • Multifunctional SAR complex electromagnetic environment simulator
  • Multifunctional SAR complex electromagnetic environment simulator
  • Multifunctional SAR complex electromagnetic environment simulator

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Embodiment Construction

[0023] Such as figure 1 As shown, the multifunctional SAR complex electromagnetic environment simulator of the present invention is composed of the following subsystems: antenna and microwave subsystem, baseband interference information generation and modulation unit, SAR real-time image acquisition unit, control display and model unit.

[0024] The antenna and microwave subsystem is mainly composed of horn antenna, radio frequency cable, multi-stage down-conversion, AGC, multi-stage up-conversion, power adjustment, power splitter, frequency synthesis and other modules. The main function of this subsystem has two parts. The first part is to obtain the SAR radar transmission signal through space reception or line feed, and perform power adjustment and multi-stage down-conversion on the signal, and then output the intermediate frequency radar signal to the baseband interference information. Generation and modulation unit. The second part is to perform multi-level up-conversion ...

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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...

Claims

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 刘伟王朔曹雷团吴强杨秀山张洪源梁超杰张子剑李茜华贾睿
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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