Laboratory simulation method of ship surface composite electromagnetic environment
A laboratory simulation, composite electromagnetic technology, applied in the direction of ammunition testing, teaching models, weapon accessories, etc., can solve problems such as the inability to truly and comprehensively reflect the characteristics of the battlefield electromagnetic environment, and achieve the effect of saving investment.
Active Publication Date: 2011-07-20
CHINA SHIP DEV & DESIGN CENT
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Problems solved by technology
However, the existing scale model test technology and numerical simulation technology based on computational electromagnetics can only predict the distribution characteristics of the electromagnetic environment when a single radiation source is working
At the same time, when carrying out the electromagnetic environment effect test of equipment and systems under laboratory conditions, the simulated electromagnetic environment is the environment given in the current standards, which cannot truly and comprehensively reflect the characteristics of the battlefield electromagnetic environment
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[0019] figure 1 It is a schematic diagram of the structure of the signal radiation device. The signal radiation device is divided into three parts: a control unit, a transmitting unit and an acquisition unit; the control unit includes a computer and an acquisition card; Composed of a transmitter, a load and a transmitting antenna, the signal output by the signal source is transmitted to the test antenna through an amplifier, a dual directional coupler and an attenuator. connected, the dual-directional coupler is also connected with a load, wherein the transmitting unit can be multiple, two in this embodiment; the acquisition unit is composed of an electric field probe, the electric field probe is connected to the acquisition card through a cable through a terminal block, and the electric field probe The number can be increased or decreased as needed.
[0020] The scaled-scale ship model technology established based on the principle of scaling in antenna design theory reduces ...
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The invention discloses a laboratory simulation method of a ship composite electromagnetic environment, which improves the predicting method of the electromagnetic environment of a single radiation source based on the prior reduced-scale ship model technology according to the law of conservation of energy, sufficiently uses a virtual instrument technology for simultaneously controlling a plurality of signal radiation devices, realizes that a plurality of antennas simultaneously work at different frequencies, and acquires the distribution property of the electromagnetic environment of a ship surface composite field. The invention can predict the distribution property of the electromagnetic environment when a plurality of radiating sources work, uses relatively low power, simulates previously acquired electromagnetic environment of the actual ship under a laboratory environment, greatly saves the investment of the power amplifier and provides a measuring means and a measuring method forchecking the war efficiency of the equipment to be checked under a complex electromagnetic environment.
Description
technical field [0001] The invention relates to a laboratory simulation method for a ship's composite electromagnetic environment. Background technique [0002] It is common for multiple antennas to work simultaneously on modern weapon platforms. Multiple radiation sources operating at different frequencies act together to form a composite field. For ships, the compound field phenomenon is a very common phenomenon. Fully considering the harsh electromagnetic environment generated when multiple antennas on the ship transmit at different frequencies simultaneously and predicting the electromagnetic environment effects of equipment and systems will help solve many problems in engineering electromagnetic compatibility design. However, the existing scaled model testing technology and numerical simulation technology based on computational electromagnetics can only predict the distribution characteristics of the electromagnetic environment when a single radiation source is workin...
Claims
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IPC IPC(8): G09B23/18F42B35/00
Inventor 张崎侯冬云宋东安谭辉谢大刚喻菁邢芳方重华
Owner CHINA SHIP DEV & DESIGN CENT