Semi-physical simulation system based on double/multi-base SAR imaging

Abstract

The invention discloses a semi-physical simulation system based on double / multi-base SAR imaging. The semi-physical simulation system comprises a display screen, a data acquisition board card and a simulation workstation which are connected through a network switch, the simulation workstation comprises a main control computer and a plurality of nodes, and distributed double / multi-base SAR imagingand application simulation verification software runs in the simulation workstation. The data acquisition board card is used for acquiring target echo data under various configurations, and importingthe target echo data into an actual measurement database of the simulation system through a semi-physical simulation interface to serve as verification data of a simulation algorithm in simulation verification software and input data of simulation image effect evaluation; the display screen is used for demonstrating distributed double / multi-base SAR imaging and applying simulation verification software and project discussion; and the simulation verification software is used for establishing a digital distributed imaging system and a virtual complex electromagnetic environment application verification scene thereof. According to the semi-physical simulation system, an application verification scene can be set, and the application requirement of a complex electromagnetic environment is met.

Description

technical field [0001] The invention relates to the field of dual / multi-base SAR imaging simulation, in particular to a semi-physical simulation system based on dual / multi-base SAR imaging. Background technique [0002] The traditional SAR imaging simulation system is mainly a single-station simulation system, and the bistatic / multistatic SAR is compared with the single-static SAR: the non-backscattering information of the target can be obtained, and the target recognition angle of view is further expanded; the transmitter and the receiver are distributed Arrangement, the receiver does not transmit signals and only passively receives signals, which has stronger concealment and anti-interference performance. As a new method of earth observation from space, bistatic / multistatic SAR has broad prospects for development in both civilian and military fields. Domestic research institutes such as the University of Electronic Science and Technology of China, the National University ...

AI Technical Summary

Problems solved by technology

[0003] 1) The simulation boundary setting of the existing simulation system is idealized. Both the circuit simulation tool and the electromagnetic field simulation tool use ideal boundary conditions, which hardly consider the complex actual application environment, and cannot meet the modeling requirements of the complex electromagnetic environment;

[0004] 2) The simulation data of the existing simulation system is scattered, and the co-simulation of electromagnetic field and signal processing is difficult. At present, the simulation tools either focus on signal analysis or electromagnetic field analysis, and it is difficult to co-simulate and analyze complex electromagnetic environment problems between tools;

[0005] 3) The existing simulation system has a single simulation dimension and cannot perform multi-dimensional simulation analysis. Both electronic system software and electromagnetic simulation software generally perform simulation analysis from one-sided dimensions, such as separate time domain analysis, separate frequency domain analysis, etc.

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