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Data file storage method suitable for image sonar system

A technology of data files and image data, applied in the field of data file storage of image sonar system, to achieve the effect of simple file format

Inactive Publication Date: 2012-12-12
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research and generation of image sonar in China has not been industrialized, and most of them are in the prototype stage. From the public literature and reports, no domestic organization has proposed the storage format of image sonar data

Method used

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  • Data file storage method suitable for image sonar system
  • Data file storage method suitable for image sonar system
  • Data file storage method suitable for image sonar system

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Experimental program
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Embodiment Construction

[0030] A data file storage method that can be used in an image sonar system according to the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] In the specific embodiment, the side-looking synthetic aperture sonar is taken as an example for illustration, and the number of pixels in the distance direction of the side-looking sonar is N x , the pixel accuracy is single-precision floating-point (float), and the image data is complex. The side-view sonar image data also has geographic location information (GPS information), time information, and sensor information (depth and speed). All sensor information uses Double-precision floating-point type, and the time information is represented by an unsigned integer.

[0032] When the side-looking synthetic aperture sonar scans the underwater environment in real time, it generally adopts a periodic repetitive work mode, that is, it transmits and receives acoustic signals at time t ...

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Abstract

The invention relates to a data file storage method suitable for an image sonar system. Data file formats created by the method comprise a file information storage format, an image sonar image information storage format, a geographical coordinate information storage format, an image sonar time information storage format and an image sonar sensor information storage format. The image sonar system generates image data in a working process, stores a data file by sequentially writing in image sonar image information data, geographical coordinate information data, image sonar time information dataand image sonar sensor information data and finishes data storage according to a corresponding data file format. The data file storage method has simple file formats, integrates and uniformly stores the image information data, the geographical coordinate information data, the time information data and the sensor information data and adopts an image block mode so that the file formats can be used for storing the image sonar data in real time and can store the image data of a plurality of kinds of sonar in post-processing.

Description

technical field [0001] The invention belongs to the field of data storage, in particular to a data file storage method applicable to an image sonar system. Background technique [0002] Image sonar is an important tool for underwater mapping, underwater environment and underwater target detection. The image sonar system will generate a large amount of data in the process of surveying and mapping. It is very important to store these data in a suitable way for the subsequent application of image sonar. The data generated by image sonar not only has the characteristics of the image, but also adds a lot of other information (such as geographic coordinate information, time information, various sensor information, etc.), and directly adopts the existing image data storage format (such as BMP, JPEG, etc.) , TIF, etc.) cannot meet the requirements of image sonar data storage, because image file formats such as BMP, JPEG, TIF, etc. are all formulated for optical raster images. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/52
Inventor 刘维刘纪元张春华
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI