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Method for extracting data layer of polar-region ice radar

A technology of ice-penetrating radar and extraction method, which is applied in the directions of radio wave reflection/re-radiation, electromagnetic wave re-radiation, and utilization of re-radiation, etc., which can solve problems such as noise and unclear horizons

Active Publication Date: 2014-01-15
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

At present, the methods used for glacier layer extraction are mainly from the imaging aspect, such as diffraction tomography, ground penetrating radar wavefront imaging algorithm and ground penetrating radar time domain back projection imaging algorithm, etc. These methods can obtain glacier layer extraction image, but the obtained layer extraction image has noise, making the layer unclear

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  • Method for extracting data layer of polar-region ice radar
  • Method for extracting data layer of polar-region ice radar
  • Method for extracting data layer of polar-region ice radar

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0015] The polar ice-penetrating radar data layer extraction method proposed by the present invention is based on the robust principal component decomposition-total variation principle, and the method has been theoretically verified through simulation experiments, and the theoretical analysis and simulation experiment results have proved the effectiveness of the method .

[0016] figure 1 It is a flow chart of the method for extracting horizons of polar ice-penetrating radar data according to the present invention. refer to figure 1 , the method includes the following steps.

[0017] In step 1, the algorithm is initialized, that is, the image to be processed is input, and the initial values ​​of the original image rest...

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Abstract

The present invention discloses a method for extracting data layer of a polar-region ice radar, which comprises the following steps: a first step, initializing an algorithm, inputting an image to be processed, and simultaneously setting initial values of an original image recovering coefficient, image layer extracting coefficient, regularizing coefficient and layer extracting regularizing factor; a second step, determining whether an iteration termination condition is satisfied, if yes, outputting original image recovery and image layer extracting result, and if no, entering an iteration process of a third step; and the third step, repeatedly performing original image recovering and image layer extracting, processing by means of a gradient frame in original image recovering, and processing by means of a total variation miniaturization gradient frame in image layer extracting; and at the final period of the iteration process, updating the value of the layer extracting regularizing factor by means of a conjugate gradient algorithm; wherein every the step is iterated once, returning to the second step for determination is performed until the iteration termination condition is satisfied. Accurate layer of a glacier can be obtained by means of the method of the invention.

Description

technical field [0001] The invention belongs to the technical field of polar ice-penetrating radar imaging, and in particular relates to a method for extracting layers of polar radar data. This method can be used for the extraction of polar subglacial layers, and can also be applied to data processing such as ground penetrating radar engineering detection, hydrogeological detection, ecological environment detection, and Mars subglacial detection. Background technique [0002] The polar ice-penetrating radar uses a transmitting antenna to transmit high-frequency and wide-band electromagnetic pulses, and receives reflected waves from the (underground) medium layer through a receiving antenna. When an electromagnetic wave propagates in a medium, its path, electromagnetic field strength, waveform, phase, etc. vary with the electromagnetic properties and geometry of the medium it passes through. Therefore, by detecting parameters such as echo time, amplitude, and phase, informat...

Claims

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Application Information

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IPC IPC(8): G01S17/89
CPCG01S7/41G01S13/885G01S13/89
Inventor 刘小军稂时楠赵博李俊方广有
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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