Compressed sensing method for space-time situation of evaporation duct

A technology of compressed sensing and evaporative waveguide, which is used in instruments and other directions to achieve the effect of extending service life, reducing energy consumption and improving sensing efficiency.

Active Publication Date: 2013-11-20
NAVAL AVIATION UNIV
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Problems solved by technology

The new method realizes the low-complexity and fast perception of the distribution situation of the evaporation waveguide in the sea, overcomes the defects of large amount of stored data and large amount of calculation in the traditional sensing process, and improves the sensing efficiency

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  • Compressed sensing method for space-time situation of evaporation duct
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  • Compressed sensing method for space-time situation of evaporation duct

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Embodiment Construction

[0023] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0024] An evaporation waveguide space-time situation compression sensing method, the specific process is as follows:

[0025] Step A, relying on the large-scale ocean buoy system and based on the three-dimensional observation model, randomly and scatteredly collect data and sleep. The so-called three-dimensional observation model is to use M three-dimensional matrix units satisfying the Bernoulli distribution (like figure 1 Schematic) Observing meteorological data such as temperature, pressure, humidity, etc. at sea, the observation unit Corresponding to the mth observation process, where the element The black block represents 1, that is, the data collection point, and the white block represents 0, that is, the non-collection point. Actually control the sleep and work of each sensor, each element in a page corresponds to a sensor, and the...

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Abstract

The invention relates to a compressed sensing method for space-time situation of an evaporation duct, and discloses a three-dimensional observation model and a reconstruction method aimed at reducing data bulk and computation complexity stored and acquired in the space-time situation sensing process of the evaporation duct. Time dimension and space dimension are simultaneously observed via an equivalent three-dimensional sensing matrix, and a smooth zero norm is used as sparse constraint, so that the whole construction is considered, and artificial effect on effect introduced by independent space or time dimension is alleviated. Under the same compression ratio, time-space three-dimensional result closest approaches the true value.

Description

technical field [0001] The invention belongs to the fields of compressed sensing and evaporative waveguide space-time situational awareness, and in particular relates to a method for compressed evaporative waveguide space-time situational situational awareness. Background technique [0002] Evaporation ducts are the most common anomalous atmospheric refraction structures in the marine atmosphere environment, which are mainly caused by the evaporation of seawater and belong to the category of subsea ducts. Existing studies have shown that the occurrence probability of offshore evaporation ducts is as high as 85%, and it has a great impact on electronic systems (such as radar, communication, etc.) that work based on normal marine atmospheric modes. Therefore, it is particularly important to know the space-time situation of the offshore evaporation duct. At present, the change data of meteorological parameters such as temperature, pressure, humidity, and wind speed of the sea ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/00
Inventor 芮国胜田文飚刘云飞
Owner NAVAL AVIATION UNIV
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